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HJ 24-2014

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Detail Information of HJ 24-2014; HJ24-2014
Description (Translated English): Environmental Protection Industry Standard
Sector / Industry: Environmental Protection Industry Standard
Classification of Chinese Standard: Z30
Word Count Estimation: 36,317
Date of Issue: 10/20/2014
Date of Implementation: 1/1/2015
Older Standard (superseded by this standard): HJ/T 24-1998
Quoted Standard: GB 3096; GB 8702; GB 12348; HJ 2.1; HJ/T 2.3; HJ 2.4; HJ 19; HJ/T 169; HJ 681; DL/T 1089
Drafting Organization: Ministry of Environmental Protection Environmental Radiation Monitoring Technical Center
Administrative Organization: Ministry of Environmental Protection
Regulation (derived from): Ministry of Environmental Protection Notice No. 66 of 2014
Issuing agency(ies): Ministry of Environmental Protection
Summary: This standard specifies the content and method of power transmission project construction project environmental impact assessment work. This standard applies to 110 kV and above voltage AC power transmission project, impact assessment of �� 100 kV and abov

HJ 24-2014
Technical guidelines for environmental impact assessment of electric power transmission and distribution project
People's Republic of China National Environmental Protection Standards
Replacing HJ/T 24-1998
Issued on:2014-10-20
2015-01-01 implementation
Issued by the Ministry of Environmental Protection
Table of Contents
Preface II
1. Scope ..1
2 Normative references ..1
3 Terms and Definitions .1
4 basic provisions ..2
5 Project Overview and engineering analysis 8
6 Environmental Survey and Evaluation 9
7 Construction of the Environmental Impact Assessment .11
8 runtime environment impact assessment .11
9 environmental protection measures and technology, economic feasibility .14
10 Environmental Management and Monitoring Plan .14
11 Public Participation 15
Appendix A (normative) power transmission project environmental impact report .17 Special and staffing requirements
Format and requirements Annex B (normative) power transmission project environmental impact statement of ..19
Annex C (informative) under high voltage overhead transmission lines spatial frequency electric field intensity calculation .22
Annex D (informative) under high voltage overhead transmission lines spatial frequency magnetic field strength calculation 29
Annex E (informative) Simplified theoretical DC transmission lines resultant electric field strength calculation programs and calculation steps .30
Foreword
To implement the "People's Republic of China Environmental Protection Law" and "People's Republic of China Environmental Impact Assessment Law" to regulate power transmission project construction
Let environmental impact assessment projects to prevent pollution of the environment and transforming power project, the development of this standard.
This standard specifies the power transmission project construction project environmental impact assessment of the contents, methods and other technical requirements.
This standard is the "500kV EHV Transmission and Distribution Project Electromagnetic radiation Environmental Impact Assessment Technical Specifications" (HJ/T 24-1998) repair
Order.
This standard was first published in 1998, the original standard was drafted for the Northern Jiaotong University, this is the first revision. The main amendments within
Content:
- Scope covers the 110kV and above voltage AC power transmission project, ± 100kV and above voltage level of the DC
Transmission Project;
- Added HVDC Project Evaluation content requirements;
- Increased content requires the evaluation of the ecological, sound, water, public participation and other factors.
From the date of implementation of this standard, "500kV EHV Transmission and Distribution Project Electromagnetic radiation Environmental Impact Assessment Technical Specifications" (HJ/T
24-1998) abolished.
This standard Annex A, Annex B is normative appendix, Appendix E Appendix C ~ informative appendices.
This standard by the Ministry of Science, Technology and Environmental Protection, Division of radiation safety regulatory organizations to develop.
This standard is mainly drafted by: Environmental Protection Department of Environmental Radiation Monitoring Technical Center.
This standard MEP October 20, 2014 for approval.
This standard since January 1, 2015 implementation.
The standard explanation by the Ministry of Environmental Protection.
Environmental Impact Assessment Technology Guidelines Transmission Project
1 Scope
This standard specifies the content and method of power transmission project construction project environmental impact assessment work.
This standard applies to 110kV and above voltage AC power transmission project, ± 100kV and above voltage direct current transmission project
Construction project environmental impact assessment.
2 Normative references
The standard content of the following documents cited in the articles. For undated references, the effective version applies to this standard.
GB 3096 acoustic environment quality standards
GB 8702 electromagnetic environment control limit
GB 12348 industrial enterprises of environmental noise emission standard plant boundary
HJ 2.1 Environmental Impact Assessment Technology Guidelines Master
HJ/T 2.3 Environmental Impact Assessment Technology Guidelines surface water
HJ 2.4 Environmental Impact Assessment Technology Guidelines make a sound environment
HJ 19 Environmental Impact Assessment Technology Guidelines ecological impact
HJ/T 169 Construction Project Environmental Risk Assessment Guidelines
HJ 681 AC Transmission Electromagnetic Environment Monitoring (Trial)
DL/T 1089 DC converter station and line field strength, ion current density measurement method
"Interim Measures on Public Participation in Environmental Impact Assessment" (UNCED [2006] No. 28)
3 Terms and Definitions
The following terms and definitions apply to this standard.
3.1 Transmission Project electric power transmission and distribution project
The energy characteristics (mainly refers to voltage, AC or DC) is transformed and transported from the power supply to the power demand to the project.
The standard refers to the power transmission project can be divided into AC and DC power transmission project transmission project, which includes a power transmission line AC Transmission
Road and substation (or switch station, Series Compensation Station), including HVDC transmission line project, converter station and grounding systems.
3.2 Transmission Line transmission line
For inter-power system consisting of two transmission facilities wire, insulation materials, and other towers.
3.3 substation substation
Part of the electrical system, its function is to change the voltage level, collection and distribution of power, including transformers, bus bars, circuit switch
Equipment, buildings and electrical safety and control systems required equipment.
3.4 switching station switching substation
With a switch device, also typically includes bus, but no power transformer substation.
3.5 Series Compensation Station series compensator station
Power system transmission line series compensation power facilities. Series compensation station installed complete sets of equipment and related support facilities and buildings
Material structures.
3.6 converter station converter station
Mounted inverter and are mainly used to convert alternating current or direct current into AC substation. Usually installed in the one place
One or more of the inverter, and the corresponding buildings, transformers, reactors, filters, reactive power compensation equipment, control, monitoring, protection,
Measuring equipment and auxiliary equipment.
3.7 grounding system earth electrode system
DC transmission project, in order to achieve normal operation or failure to earth or sea water for current loop operation specifically designed and built a
General device group. It mainly consists of grounding line, grounding wire and grounding the feed stream composition.
3.8 Electromagnetic environmental sensitive targets electromagnetic environment-sensitive target
Electromagnetic Environmental Impact Assessment need to focus on the subject. Including homes, schools, hospitals, office buildings, factories and other public has to live, work
Or learning building.
3.9 frequency electric field power frequency electric field
At any time intercropping 50Hz cycle of charge generated electric field. Measurement frequency electric field intensity of the electric field intensity quantities, units of volts
Special per meter (V/m), commonly used in engineering kilovolt per meter (kV/m).
3.10 frequency magnetic field power frequency magnetic field
At any time intercropping 50Hz cycle generated by the current magnetic field. Measurement frequency magnetic field strength can be used both physical magnetic induction may also be
In magnetic field strength, whose units were tesla (T) and amperes per meter (A/m), the engineering unit of magnetic induction commonly used micro
Tesla (μT).
3.11 composite electric field total electric field
Electric field and space charge field conductor charged conductor DC corona charge generated due to the electric field generated after synthesis. Measure synthetic motor
Field intensity physical quantity is the electric field strength in units of volts per meter (V/m), commonly kilovolts per meter (kV/m) on the project.
3.12 nominal nominal electric field electric field
DC electric field generated by the charge charged conductor (not including the space charge field formation). The nominal electric field strength measurement of electrical quantities
Field strength in units of volts per meter (V/m), widely used in engineering kilovolts per meter (kV/m).
4 basic provisions
4.1 work program
Power transmission project environmental impact assessment is generally divided into three phases: preparation, research and program of work stages and pre-analysis and demonstration
Test evaluation stage, the environmental impact assessment document preparation phase. Prepare an environmental impact report power transmission project environmental impact assessment procedures and
The main content of each stage as shown in Figure 1. Preparation of environmental impact statement of the power transmission project environmental impact assessment of the various stages of work content than the series
The report made the work content can be appropriately simplified.
4.2 basis for evaluation
4.2.1 power transmission project environmental impact assessment should be related to environmental protection standards, the industry in accordance with national environmental protection laws and regulations, national and local
Norms, urban and rural planning related information, engineering data, and planning environmental impact assessment (if any) and other relevant information to carry out.
4.2.2 environmental laws and regulations, including environmental protection, ecological protection, environmental impact assessment, pollution prevention and other national laws
Regulations, relevant local rules, regulations, and environmental function zoning.
4.2.3 related to environmental protection standards, including the Environmental Impact Assessment Guidelines, environmental quality standards, state and local pollutant emissions
Standards, and environmental monitoring and other related standards.
4.2.4 industry standards, including power transmission project construction, design, construction and other technical specifications and norms regarding environmental protection.
4.2.5 urban planning-related information, including planning and environmental protection, ecological construction planning.
4.2.6 engineering data, engineering feasibility study report and review comments include comprehensive economic departments have agreed to carry out preparatory work for the project is intended
See related engineering survey report, proxy statement and other environmental impact assessment task.
4.2.7 Network planning or other relevant planning and environmental impact assessment report review comments (if any), and more particularly to route selection option
Site guidance, alignments, wiring methods of planning.
4.2.8 Environmental impact assessment documents should be attached to the local authorities agree on the location selected line comments when engineering solutions involving nature reserves,
When scenic spots, the World Cultural and Natural Heritage, the drinking water source protection areas and other environmentally sensitive areas, should be the appropriate government authorities
opinion. For the environment along the project did not delineate functional areas, must be accompanied by the local environmental protection department to confirm the applicable standards of the relevant documents.
4.3 Evaluation Content
4.3.1 Transmission Project Environmental Impact Assessment should include the construction and operation period, and covers the whole process of construction and operation, scope and activities
move.
Impact Assessment 4.3.2 Transmission Project construction period and operation period of the electromagnetic environment in general should be considered sound, wastewater, solid waste and ecological
Content and other aspects. Special settings and establishment of the report are specified in Annex A, the specific format and requirements for reporting forms Appendix B.
4.3.3 When conducting power transmission project environmental impact assessment, evaluation procedures shall recommend the project to evaluate the program, from environmental protection
Angle demonstration projects selected line location, so erected, equipment selection and layout, and environmental feasibility of building programs.
4.3.4 When the project has been built or planned across residential areas, cultural and educational areas or nature reserves, scenic spots, the World Cultural and Natural Heritage
From time to time, drinking water source protection areas and other environmentally sensitive areas, the book reports the need to increase the program line than the environmental feasibility of alternatives and selected demonstration
Content. Through comprehensive comparison of project cost, investment in environmental protection, land use and other aspects of the plan compliance and environmental rationality, workers
Cheng feasibility analysis, if necessary, propose alternatives, and alternative environmental impact assessment.
4.3.5 power transmission project environmental impact report should indicate network planning environmental impact report (if any) review comments and their implementation,
And compliance analysis plan for the project according to the planning of the EIA review comments.
4.3.6 Extension power transmission project environmental impact assessment should be the basic requirements of the evaluation procedures, instructions off the current Project and Engineering
system. The report shall include pre-project environmental issues, impact, effectiveness and implementation of environmental protection measures, as well as the main evaluation conclusions Review
Analysis of the content. If the pre-project has passed acceptance of completed construction projects, the latest issue of completion of the project should also include environmental protection
The main conclusions of the inspection.
4.3.7 power transmission project environmental impact report concluded that the overall conclusions of all evaluation work, the need to generalize and summarize all evaluations, can pack
Including a positive impact on the environment (such as overhead line renovation when underground cables to reduce electromagnetic influence) the evaluation of the content.
4.3.8 is included in the plan has been approved EIA power transmission project, the project during the EIA review comments and can be adapted according to the EIA plan
When simplified environmental impact assessment content.
FIG. 1 power transmission project environmental impact assessment procedures and content
1. Environmental Impact Assessment commissioned file
2. The construction project based on documents
1. Identification and Evaluation of Environmental Impact Screening factor
2. Determine the focus of the evaluation, the evaluation criteria and grading work
3. To clarify the scope of the evaluation and the special protection goals
Research on the national and local environmental protection laws and regulations, policies, standards and related programs
1. The relevant technical documentation research projects and other relevant documents
2. Conduct a preliminary survey of environmental conditions
3. The preliminary engineering analysis
Program of work
1. Environmental Impact Prediction
2. Plan Conformance Analysis
3. Alternatives and environmental protection measures demonstrate
National and local
Environmental protection law
Policy standards and regulations, production
Industry policy and related regulations
Environmental impact assessment of construction projects
public participation
(Report this publicity Letters)
1. The evaluation results are given construction project environmental feasibility
2. The proposed environmental protection measures and recommendations
3. To prepare an environmental impact report
Transfer Environmental Status
Investigation, monitoring and
Evaluation
engineering
analysis
And Preliminary ring
Habitat condition adjustment
Charles compared
Significant changes
And preliminary work
Process analysis
Significant than
Variety
public participation
(Public comment)
public participation
(EIA information to inform)
4.4 Evaluation Factors
The main environmental impact assessment and transforming power project factors shown in Table 1.
The table below summarizes the main environmental impact assessment factors Table 1 Transmission Project
Evaluation
stage
Evaluation
project
Status evaluation factor prediction unit evaluation factor unit
Construction of the acoustic environment daytime and nighttime equivalent sound level, Leq dB (A) daytime and nighttime equivalent sound level, Leq dB (A)
Frequency electric field kV/m frequency electric field kV/m
Frequency magnetic field μT power frequency magnetic field μT
electromagnetic
surroundings
Synthetic electric field kV/m electric field synthesis kV/m
Acoustic environment daytime and nighttime equivalent sound level, Leq dB (A) daytime and nighttime equivalent sound level, Leq dB (A)
Runtime
Surface water pHa, COD, BOD5, NH3-N, petroleum mg/m3 pHa, COD, BOD5, NH3-N, petroleum mg/m3
a pH value of dimensionless.
4.5 Evaluation Criteria
4.5.1 Environmental Quality Criteria for evaluation should be performed according to the requirements of relevant environmental factors area construction projects at the national or local environmental quality
standard.
4.5.2 pollutant emission standards should perform the appropriate national or local emission standards, priority should be the implementation of local emission standards,
Implementation of standards should be consistent with the local administrative department of environmental protection requirements.
4.5.3 When the environmental standards of construction project implementation is not yet developed, may refer to the administrative department of environmental protection after consent
International standard or the international standards.
4.6 Assessment Grade
4.6.1 Electromagnetic Environmental Impact Assessment Grade
Electromagnetic environment impact assessment is divided into three grades, an evaluation of the electromagnetic environment on a comprehensive, detailed and in-depth evaluation; two
Evaluation level of electromagnetic environmental impact of a more detailed, in-depth evaluation; three evaluation can only electromagnetic environmental impact analysis. Level work plan
Table 2 points.
Switching stations, series compensation station electromagnetic environment impact assessment level determined in accordance with Table 2 substation voltage level; converter station electromagnetic environment impact
Rank DC voltage to prevail, in accordance with Table 2 DC works OK.
When electromagnetic environment impact assessment classification, such as projects involving multiple voltage levels or related to the cross, when a combination of DC, should
In a corresponding maximum operating level was evaluated.
4.6.2 Ecological Environmental Impact Assessment Grade
Ecological environmental impact assessment classification reference HJ 19 Ecological Environmental Impact Assessment Grade division.
Effect of the Transmission Project Transmission Line Project on ecologically sensitive areas for point interval type, overhead line engineering ecological impact (including interval)
Evaluation grade in accordance with HJ 19 judges, based on the principle of combining HJ 2.1 relating to the evaluation level adjustment, Rank Down
Adjustment of no more than one level, and explain the specific reasons for the adjustment.
4.6.3 Acoustic Environmental Impact Assessment Grade
Acoustic environmental impact assessment grading accordance with the provisions of HJ 2.4.
Table 2 electromagnetic power transmission project level environmental impact assessment
Voltage engineering conditions
Evaluation work
For Level
Indoor type, three underground substation
Outdoor type two
1. Underground Cable
2. The outer edge wire to the ground on both sides of the projection-free range of the electromagnetic environment in each 10m sensitive targets overhead lines
Three
110kV
Electricity transmission
line
There are ground wires within the outer edge of each side of the projector 10m range of the electromagnetic environment sensitive targets two overhead lines
Indoor type, three underground
Transformer substation
Outdoor type two
1. Underground Cable
2. The outer edge wire to the ground on both sides of the projection-free range of the electromagnetic environment in each 15m sensitive targets overhead lines
Three
220 ~ 330kV
Electricity transmission
line
There are ground wires within the outer edge of each side of the projector 15m range of the electromagnetic environment sensitive targets two overhead lines
Indoor type, two underground
Transformer substation
An outdoor ceremony
1. Underground Cable
2. The outer edge wire to the ground on both sides of the projection-free range of the electromagnetic environment in each 20m sensitive targets overhead lines
Two
500kV and above
Electricity transmission
line
There are ground wires within the outer edge of each side of the projector 20m range of the electromagnetic environment sensitive targets an overhead line
± 400kV and above - - a straight
Stream Other - - two
NOTE: According to the environmental impact assessment to determine the level of electromagnetic switching stations, series compensation station with substation voltage level is determined based on the DC side commutation voltage level
Station electromagnetic environment impact assessment rating.
4.6.4 Surface Water Environmental Impact Assessment Grade
Environmental impact assessment of surface water classification carried out in accordance HJ/T 2.3 in.
4.7 Scope of the evaluation
4.7.1 Electromagnetic Environmental Impact Assessment Scope
Electromagnetic Environmental Impact Assessment Table 3 range.
Table 3 electromagnetic power transmission project environmental impact assessment of the scope
Scope of the evaluation
Line categories voltage substation, converter station,
Switch station, Series Compensation Station of overhead lines underground cables
30m edge wire to the ground on both sides of the outer boundary of each projection outside 110kV station 30m
220 ~ 330kV 40m outside the station boundary wire to the ground side of the outer sides of each projection 40m AC
500kV and above ground outer side of the projector standing outside 50m 50m each side of the wire
DC ± 100kV and above ground outer side of the projector standing outside each 50m 50m pole wire
Both side edges of each cable pipe gallery
Extension 5m (horizontal distance)
4.7.2 Ecological Environmental Impact Assessment Scope
Substations, converter stations, switching stations, train stations complement the range of ecological environment influence evaluation station outside the fence within 500m; do not involve ecologically sensitive
Transmission line sections of area ecological environment impact assessment in the range of wire to the ground on both sides of the outer edge of each projection line within 300m of the strip-shaped area, involving ecology
Transmission line sections of the environmental impact assessment of the scope of the ecological sensitive area within the outer edge of wire to the ground on both sides of each projection line 1000m strip area.
4.7.3 Acoustic Environment Impact Assessment of range
Acoustic Environmental Impact Assessment Scope substations, converter stations, switching stations, series compensation station shall be determined in accordance with the relevant provisions of HJ 2.4; overhead transmission
Acoustic Environment Impact Assessment range Line Project Evaluation reference table corresponding voltage range of 3 lines; underground cable may not be sound environment
Impact Assessment.
4.8 Environmental targets
Brief description of the positional relationship between the name and the list of the evaluation within the scope of each element corresponding to environmentally sensitive areas, functions, and engineering and to be achieved
Protection requirements.
The name should given electromagnetic environment sensitive targets, functions, distribution, quantity, of a building, height, and the relative position of other projects situation.
The name should give conservation objectives, level of examination and approval, distribution, size, scope of protection, indicating the positional relationship with the project,
Together with functional zoning map ecologically sensitive areas.
4.9 Evaluation Key
When the elements of the evaluation level two and above, should be the focus of evaluation.
Basic Requirements 4.10 electromagnetic environment impact assessment
Basic requirements 4.10.1 an assessment
For transmission lines, sensitive targets within the scope of the evaluation and the representative status of the electromagnetic environment typical line position should be measured, the measured knot
If the evaluation and analysis of its impact on existing sources of electromagnetic constitute sensitive targets; electromagnetic environment impact prediction should be used to monitor analog and analog
Formula forecast combination.
For substations, converter stations, switching stations, series compensation station, within the scope of the evaluation of each side of the station near the electromagnetic environment sector sensitive targets and station industry
The status quo should be measured, and the measured results were evaluated, constitute existing analysis of electromagnetic sources and their impact on sensitive targets; Electromagnetic Environmental Impact Pre
Testing should be used to monitor analog way.
Two basic requirements 4.10.2 Evaluation
For transmission lines, electromagnetic environment Situation within the scope of its evaluation of a representative sensitive targets to be measured, at the typical non-sensitive target
Status bit line electromagnetic environment can be measured, it can also be used within the scope of the evaluation of existing monitoring data of recent three years, the current situation and conduct electromagnetic environment
Evaluation. Electromagnetic Environmental Impact prediction should be used to monitor analog and combination of model predictions.
For substations, converter stations, switching stations, series compensation station, close to sensitive targets within the evaluation range on each side of the border station electromagnetic environment should Situation
Found Situation station sector electromagnetic environment can be measured, can also use the existing status quo in the electromagnetic environment monitoring data of the last three years, and electromagnetic environment
To evaluate the status quo. Electromagnetic Environmental Impact prediction should analogy monitoring mode.
4.10.3 three basic requirements for evaluation
For transmission lines, the main focus of investigation and assessment of sensitive targets within the range of the electromagnetic environment and the status of a typical bit line can be used to evaluate the range
Recent monitoring data already 3 years; the absence of surveillance data the status quo should be measured, and evaluated status of the electromagnetic environment. Electromagnetic Loop
Environmental impact prediction mode generally used in a predictable manner. Transmission lines when underground cables, can be used to monitor analog way.
For substations, converter stations, switching stations, series compensation station, within the scope of the main focus of the investigation and evaluation goals and current sensitive electromagnetic environment station sector,
Evaluation can be used within the scope of the existing state of the environment monitoring data electromagnetic recent 3 years, in the absence status of monitoring data should be measured, and
To evaluate the status quo electromagnetic environment. Electromagnetic environment impact prediction may be qualitative analysis approach.
5 Project Overview and engineering analysis
5.1 Project Overview
5.1.1 General characteristics of the project
Including project name, nature of construction, construction site, construction content, construction scale, line route, site, voltage, current, layout,
Column, line, equipment capacity, across the situation, the number of workers and other content, and should be attached to the regional location map, the general layout schematic line
Road path diagram (should be clear lines and environmentally sensitive areas relative positional relationship) and the like. Engineering the composition should contain a means for public works,
Content and other auxiliary facilities. DC grounding systems engineering should explain the situation.
5.1.2 Project area and material resources consumption
Including permanent and temporary area and type of construction occupation of basic farmland, grassland basic situation should also be a list of instructions. Description Major
Case materials, the amount of resources, source, storage and transportation methods.
5.1.3 construction technology and methods
Including construction organization, construction technology and methods.
5.1.4 The main economic indicators
Including investment, construction period, investment in environmental protection and so on.
5.1.5 The project has been the case
According to the standard requirements of Article 4.3.6, indicating the project has been the case.
5.2 with policies, regulations, standards and compliance of planning
From the perspective of sustainable development strategies, analysis of relevant power transmission project evaluation with national industrial policies, regulations, standards and area covered
Planning (including planning and environmental protection and ecological construction planning, etc.) Conformance:
- Analysis meets the basic requirements of environmental protection, planning and other relevant departments of the proposed project;
- Analysis of project line form (single or multi-loop, etc.), line route, site and general layout of environmental rationality;
- Analysis of whether the works as far as possible away from residential areas, cultural and educational areas, nature reserves, scenic spots, the World Cultural and Natural Heritage,
Drinking water source protection areas and other environmentally sensitive areas;
Propose countermeasures on issues related to the analysis found, given the time necessary construction lines, site selection or adjustment of the escape from the requirements.
For really can not avoid nature reserves, scenic spots, the World Cultural and Natural Heritage, the drinking water source protection areas and other environmental
Sensitive areas, in the views of the relevant authorities to obtain the premise can be used only in line with the views of analysis.
5.3 Identification and evaluation of environmental impact factor screening
Environmental factors noise, waste water, dust, debris, ecological impact and other projects during the construction period were analyzed.
Factors Affecting the runtime environment of normal working conditions based. Analysis of the environmental factors, including electromagnetic, ecology, noise, waste water
Such as production, emissions control situation.
Electromagnetic noise sources and should indicate its source strength and distribution, wastewater emission sources should indicate the type, quantity, composition, concentration, treatment,
Discharge mode and whereabouts.
Environmental factors identified on the basis of the evaluation factors of construction and operation of the screening, a clear evaluation parameter.
Approaches 5.4 Ecological and Environmental Impact
Construction period, mainly from the selected line siting, construction aspects of the organization, construction methods, the impact of ecologically sensitive areas like engineering analysis of the ecological impact of transit
path.
Running period, mainly from the point of view of operation and maintenance of the ecological impact of the project route.
5.5 feasibility study environmental protection measures
Measures for environmental protection and ecological restoration project feasibility study to be undertaken by environmental factors classification be described.
Investigation and Evaluation of Environmental Status 6
6.1 Regional Overview
Including administrative divisions, geographical, regional topography and transportation, along with location map.
6.2 Natural Environment
6.2.1 Topography
According to available information, a summary description of the project area covered by terrain features, landforms (mountains, hills, plains, river, etc.). If the
No check information, you should do the necessary site investigations.
6.2.2 Geology
According to available information, a summary of the geology of the area covered by the project.
6.2.3 Hydrological Characteristics
According to available information, an overview of the relationship between body and hydrological characteristics of the power transmission and engineering works wading.
6.2.4 Climate Meteorological features
Available statistics on the use of the project site stations (stations), and a summary description of climate and meteorological characteristics of the area in question.
6.3 Social Environment
According to available information the situation, outline the implications of the project area population, transportation and other socio-economic activities.
6.4 Electromagnetic Environment evaluation
6.4.1 Monitoring Factors
a) exchange projects: power frequency electric field, power frequency magnetic field;
b) DC Project: Synthesis of electric field;
c) converter station project: frequency electric field, power frequency magnetic field, electric field synthesis.
6.4.2 monitoring sites and distribution methods
Monitoring sites include electromagnetic environment sensitive targets, transmission line route and sites.
- Method of distribution to target sensitive sentinel surveillance-based; environmentally sensitive target for electromagnetic transmission lines, the need for electromagnetic ring along
Monitoring environmental situation, as far as possible along the path of the road uniform distribution, taking into account the administrative and environmental characteristics of the representation; distribution sites ways to fence
Four weeks uniform distribution monitoring the main, if not near the new station address other electromagnetic facilities, simplifies the distribution, as the case in the wall four weeks or distribution only
Distribution center to monitor the sites.
- When another source term exists if nearby monitoring sites affect the monitoring results, it should indicate its presence and its analysis of the monitoring results
influences.
- The substation Completion of Environmental information, the converter station, switch station, Series Compensation Station renovation and expansion project, can only end in extension and supplement
Measuring point; as the completion and acceptance of the expansion has been monitoring the end, you can not set the measuring point; environmental protection has not been completed after acceptance if the operation should be
In the wall four weeks even distribution monitoring-based and high-pressure side of the fence or from the outside and charged framework closer spacing expansion project suitable outlet end
When increasing the monitoring sites, and given operating conditions existing project.
- Monitoring distribution is given in Fig.
- Sensitive Goals monitoring point of asking to see this standard 4.10; along the line when there is no electromagnetic environment sensitive targets, electromagnetic line
Number of points state of the environment monitoring requirements in Table 4.
- Analysis of representative monitoring distribution.
Table 4 along the transmission line electromagnetic state of the environment monitoring sites the number of requests
Line path length (L) range L <100km 100km≤ L <500km L ≥ 500km
Minimum number of measuring points 2 4 6
6.4.3 Monitoring frequency
Each monitoring sites monitored once.
6.4.4 Monitoring Methods and Instruments
Accordance with the provisions HJ 681, DL/T 1089 selection
6.4.5 Monitoring results
The list shows the monitoring results, and can be supplemented with maps, line description of the form, together with the quality assurance of the relevant information.
6.4.6 Evaluation and conclusions
Control evaluation criteria to evaluate and give evaluation findings.
6.5 Sound Environment Situation Assessment
Content Situation sound environmental investigation and evaluation methods to monitor distribution of acoustic reference HJ 2.4 Environmental Survey and evaluation requirements Executive
Row. Situation sound methods of environmental monitoring performed in GB 3096, GB 12348 provisions.
6.6 Evaluation of Ecological Environment Situation
Referring HJ claim 19, according to the level and scope of the evaluation criteria to determine the conduct and evaluation of the ecological status of the investigation.
6.7 Surface Water Environment Status Assessment
Sewage Transmission Project outline by function and state of the environment of the receiving water body.
7 Construction of the Environmental Impact Assessment
7.1 Ecological Environment Impact Assessment
In accordance with the provisions of HJ 19, according to the level and scope of the evaluation criteria established to carry out the ecological environment impact assessment.
7.2 Acoustic Environmental Impact Analysis
Accordance with the provisions of HJ 2.4.
From the time of the adverse effects on the surrounding noise sensitive targets generated by the distribution of the length of time and work time control, optimization of construction machinery arrangement
Analysis and so on.
7.3 construction dust analysis
Analyzed mainly from the civil construction, to prevent the material exposed, reasonable stacking, regular watering and other temporary construction management and preventive measures.
7.4 Solid Waste Impact Analysis
Mainly analyzed from the spoil, construction waste, garbage treatment and other measures.
7.5 Analysis of sewage
Mainly from the civilized construction, reasonable drainage, prevent diffuse discharge and other temporary construction management and preventive measures were analyzed.
8 Operation of Environmental Impact Assessment
8.1 Electromagnetic Environmental Impact Assessment and Prediction
8.1.1 analogy Evaluation
8.1.1.1 Select analogy objects
The scale of construction, voltage, capacity, the total flat objects arranged analogy, covers, wiring patterns, wiring height, the electrical,
Bus form, environmental conditions and operating conditions should be similar to the proposed project, and to discuss the list of comparability.
When the analog evaluation, as there are not the same type of project, the data can be obtained by means of collecting data from abroad, simulation tests, data were
Evaluation.
8.1.1.2 Analog Monitoring Factors
a) exchange projects: power frequency electric field, power frequency magnetic field;
b) DC Line Project: Synthetic field;
c) converter station project: frequency electric field, power frequency magnetic field, electric field synthesis.
8.1.1.3 Monitoring Methods and Instruments
According to HJ 681, DL/T 1089 provisions choice.
8.1.1.4 Monitoring Sites
For analog objects related to the electromagnetic environment sensitive targets for quantitative description of the extent of its impact on sensitive targets, but also on the related sensitive
Target sentinel surveillance.
Monitoring should be chosen path to consider whether the results reflect the impact of the main source terms. Given monitoring distribution map, and gives monitoring scene photos.
8.1.1.5 Analysis Analogy
The results should form the analogy, trend lines, and ways to express.
Analysis of the results of regularity analogy, objects and differences analogy proposed project; analysis of the scope of the power transmission project to predict the electromagnetic environment,
Meet specific standards or requirements of the range, the maximum range of the area that appears, and discusses their accuracy and reasonableness.
For analog monitoring results overhead transmission lines, if necessary review and analysis mode.
8.1.2 Overhead line engineering mode prediction and evaluation
8.1.2.1 predictors
a) AC line project: frequency electric field, power frequency magnetic field;
b) DC Line Project: Synthesis of an electric field.
8.1.2.2 prediction mode
According to Wired type AC overhead transmission lines, erection height, phase sequence, line spacing, wire structure, rated operating conditions and other parameters, calculated
Around power frequency electric field, power frequency magnetic field distribution and contribution of sensitive targets. AC overhead transmission line frequency electric field intensity prediction mode parameters
See Appendix C; AC overhead transmission line frequency magnetic field strength prediction mode, see Appendix D.
According to Wired type DC overhead line engineering, erection height, line spacing, wire structure, rated operating conditions and other parameters, calculate its surroundings
Distribution and contribution of the resultant electric field sensitive targets. Bipolar DC overhead line resultant electric field strength prediction in Appendix E Calculation Method
law.
Select 8.1.2.3 forecast working conditions and environmental conditions
Prediction model prediction should be given working conditions and environmental conditions should be directed at specific targets and sensitive electromagnetic environment engineering conditions and environmental conditions, together
Select reason typically predict. Column selection, can be considered the main route through the residential tower when, in accordance with the principle of conservatism selecting circuit
Magnetic greatest environmental impact tower.
8.1.2.4 prediction and evaluation
Forecast results should form and contour maps, trend charts fashion statements. Forecast results should be given the maximum, the maximum value is given, in line with
GB 8702 corresponding position limits, given the electromagnetic environment prediction compliance contour diagram of a typical line segments.
For the electromagnetic environment sensitive targets should be based on building height, predictions are given on different floors.
By comparison evaluation criteria for evaluating the prediction results, the management, mitigation of environmental impact of electromagnetic engineering measures, when necessary, avoid Min
Measures target sense.
8.1.3 cross-cutting and parallel line environmental impact analysis
When the cross-cutting or parallel mode can be used to predict or monitor analogy square 330kV and above voltage level of the transmission line project appears
France, across from the clearance distance, across the way, parallel line spacing, and other aspects of environmentally sensitive properties, electromagnetic environmental impact assessment factors
analysis. Parallel line centerline spacing of less than 100m, the analysis should focus on its overall impact on the environment sensitive targets, and gives the corresponding ring
Environmental protection measures.
8.1.4 Electromagnetic Environmental Impact Assessment Conclusion
According to the status evaluation, analogy evaluation mode prediction and evaluation results, comprehensive evaluation of the environmental impact of electromagnetic power transmission project.
8.2 Acoustic Environmental Impact Assessment and Prediction
8.2.1 Analog Line Project Evaluation
8.2.1.1 Select analogy objects
Noise source line project strong analogy can be taken to determine the method of monitoring and evaluation as a basis for analogy. Analogy with the object should be selected
The proposed construction scale, voltage, capacity, type of overhead line, line height, environmental conditions and operating conditions similar projects, and fully discussed
Comparability.
8.2.1.2 Monitoring Methods and Instruments
Selected according to GB 12348 requirements.
8.2.1.3 Monitoring Sites
a) analog line project noise source intensity. In analogy to the object to be projected point ground wire sag maximum at the center of the line to monitor the origin,
Along a line perpendicular to the direction, measuring point spacing 5m, followed by monitoring to evaluate the range boundary. Each monitor value should be subtracted from the background values,
Draw line project noise source intensity values for different distances.
b) analog acoustic environment sensitive targets. In analogy objects surrounding acoustic environment sensitive target appropriate distribution points sentinel surveillance, monitoring and recording
Point and the relative position of the object analogy.
8.2.1.4 analogy analysis of evaluation findings
Analogy should result in a table or graph, etc. express.
According to the source strong analogy Line Project noise monitoring results, analysis of noise sources and strong line project, the scope of the project predict line noise, full
Corresponding to the full range of standard, region-wide maximum occurs and discusses their accuracy and reasonableness. Engineering analysis and forecasting of surrounding sound
Environmental impact sensitive targets and mitigation and avoidance measures can be taken.
8.2.2 mode prediction and evaluation
8.2.2.1 prediction mode
For the substation, environmental impact sound converter stations, switching stations, series compensation station forecast, HJ 2.4 can be used in the pre-industrial sound environmental impacts
Measured computing model to predict the acoustic environment. The main source of the sound source intensity can choose the design value can also be determined by monitoring the analogy.
When the plant boundary acoustic environment impact assessment, the new construction project to project as the evaluation value of the noise contribution amount; renovation and expansion projects in engineering
Noise contribution value and impact of existing projects by the predicted value at boundary noise superimposed value as an evaluation amount.
Be sensitive to the target sound environmental impact assessment, the predictive value of a sensitive target suffered noise contribution of the background noise superimposed value as
Evaluation of the amount.
8.2.2.2 prediction and evaluation
Forecast results should be presented as tables and graphs and other ways to express the sound level.
Control standard to evaluate forecast results.
8.2.3 Acoustic Environment Impact Assessment Conclusion
In the evaluation of the status quo, analog evaluation mode prediction and evaluation on the basis of sound environmental impact comprehensive assessment of the project, proposed noise control,
Engineering mitigation measures, if necessary, propose measures to avoid sensitive targets.
8.3 Surface Water Environmental Impact Analysis
According to the evaluation requirements of the class and field surveys to collect data and regional water function zoning, primarily from water, treatment,
Aspects discharge destination, receiving water and treatment compliance and so on substations, converter stations, switching stations, surface water environment Series Compensation Station in Movies
Impact analysis and evaluation. Sewage main evaluation factors include pH, COD, BOD5, NH3-N, petroleum. The presence of cooling water converter station
The outer row, should be combined with the main influencing factors analysis on the receiving water body.
8.4 Solid Waste Impact Analysis
Substation, converter stations, switching stations, in the Series Compensation Station of used batteries, garbage and other solid waste sources, the number of analyzed mention
The storage conditions, and clearly disposal treatment requirements.
8.5 Environmental Risk Analysis
Transformer, Reactors, for possible environmental risks leakage current case of an accident, etc. A brief analysis of the major accident analysis
Oil pits, oil sump setup requirements, disposal requirements emergency oil wastewater.
9 environmental protection measures and technology, economic feasibility studies
9.1 Analysis of pollution control measures
For the environmental impact of proposed projects or content clear and specific environmental protection measures, such as line selection requirements, avoidance of the specific requirements of residential areas,
Line of high elevation requirements. Ecological protection and restoration measures that should be assigned to specific time periods and specific point on, with special attention to the construction of a ring
Conservation measures. Substation, converter stations, switching stations, train stations and other hazardous waste fill (such as used batteries, waste transformer oil) revenues
Collection, management and disposal, should propose appropriate environmental protection measures.
9.2 Economic environmental protection measures, technical feasibility analysis
Transmission Project in accordance with environmental protection measures should be technologically advanced, viable and economically reasonable principle and conduct program selection, we recommend the best solution.
For critical, innovative environmental protection facilities, domestic and foreign facilities should investigate the actual operating results, the analysis demonstrates that environmental protection is provided
Shi validity and reliability. Combined with the results of the environmental impact assessment, environmental engineering demonstration measures to be taken to achieve discharge standards, to meet the ring
Environmental quality requirements feasibility.
9.3 Environmental Protection Measures
He pointed out that environmental problems may exist, and gives countermeasures. Engineering feasibility study environmental protection measures give additional recommendations. Various environmental protection measures
Shi units should clarify responsibilities and deadlines for the construction engineering unit should clarify its environmental responsibilities.
9.4 Environmental Investment Estimation
According to the different periods of project implementation, list the amount of its investment in environmental protection, and to analyze its rationality. Given the measures and investment estimates at a glance
Table, calculating the environmental protection investment accounts for the proportion of total investment.
Green fees, avoid environmentally sensitive target increased project costs, the cost of noise control, ecological restoration compensation costs, sewage treatment facilities
Costs should be included among the investment in environmental protection.
10 Environmental Management and Monitoring Plan
10.1 Environmental Management
Environmental management should environmental management agencies, construction of environmental management and environmental supervision, environmental protection facilities completion acceptance, operation of environmental management
Management, environmental training, in coordination with the relevant public, etc. to make regulations.
Environmental management tasks should include: the implementation of environmental regulations, the implementation of policies, preparation of environmental management plans, environmental protection measures
Management, content and requirements of environmental protection proposed design, bidding documents, analysis and evaluation of environmental quality, environmental protection, scientific research and technology management
Wait.
Environmental management system should be set up, administration and personnel management system based on the engineering and environmental management tasks.
It should be made to reduce or mitigate the actual impact of the project due to the approach line (330kV and above), caused by static electricity, etc. specific to electrical field stimulation
Seek, and the establishment of mechanisms to deal with such impacts.
10.2 Environmental Supervision
For transport involving nature reserves, scenic spots, the World Cultural and Natural Heritage, the drinking water source protection areas and other environmentally sensitive areas
Substation project, evaluation should make recommendations to carry out the construction phase of the project site environmental supervision work. Which comprises:
- Illustrate the construction of the project site environmental supervision duties of owners, construction units and supervision units in;
- Environmental Engineering Construction Supervision main site content.
10.3 Environmental Monitoring
10.3.1 Environmental monitoring tasks
a) the development of monitoring plans, monitoring the construction phase of the project and run the dynamic changes of environmental factors and evaluation factors;
b) the project sudden environmental incidents tracking and monitoring the investigation.
10.3.2 Monitoring Spot Location
Monitoring sites affected should be laid against the construction and operation of the main environmental factors and factors. Monitoring sites should be representative, and excellent
First select an existing monitoring sites.
10.3.3 Monitoring Technical Requirements
a) the scope of monitoring should be consistent with the project area of influence;
b) monitoring the position and frequency should be based on representative monitoring data, ecological environment quality features, change and environmental impact assessment, engineering
Completion of Environmental requirements determined;
c) monitoring methods and technical requirements should comply with the norms and standards of environmental monitoring analytical methods for environmental monitoring technologies relevant countries;
d) the results of the monitoring should be carried out based on the data in the original review, checking, after finishing a comprehensive analysis of published and submitted to the competent department of environmental protection;
e) monitoring the proposed deal with quality assurance requirements.
11 Public Participation
11.1 Object and form of public participation
The object of public participation should be inclusive, representative, regional balance and randomness, including directly affected residents, units, profit
And other relevant public benefits.
Public participation according to the actual needs and specific conditions of power transmission project, choose to take notice, public opinion surveys, consulting expertise,
Forums, seminars, hearings and other forms of public comment.
11.2 Announcement of environmental information and major issues for comments
Accordance with the "Interim Measures on Public Participation in Environmental Impact Assessment" requires two stages of public information announcements.
11.3 Selection selection process advice and consulting expertise relevant units
LINE relevant units to participate in the legal form of power transmission project siting or power transmission project comment is also a form of public participation.
In approving the project, the process of technology assessment or other environmental protection specialists, certain professional experts, construction experts care for workers
Comments and suggestions Cheng is also a form of public participation. Consulting expertise in file-based or meeting minutes.
11.4 Public Opinion Survey
11.4.1 Methods
Public opinion survey methods include questionnaires, interviews or forums, seminars, hearings and the like. Public opinion surveys should be used
Unified questionnaire to facilitate comments on the subject of the investigation for statistical analysis. Questionnaire should be concise, with the option, supplemented by necessary
The observations and recommendations consulted content.
11.4.2 the number of samples
Total survey sample generally not less than 80 parts of a single substation, converter stations, switching stations, series compensation station is generally less than 30 parts; for Review
Electromagnetic environment sensitive targets within the price range of the number is small, the total number of the survey sample can be reduced appropriately. Meanwhile, the survey sample within the scope of the evaluation sample
For not less than 60% of the total.
11.4.3 survey content
The survey should include the attitude towards the implementation of the project, further comprising: a level of understanding of the project on local environmental issues and evaluation,
Selection of project siting attitude, the main environmental impacts of the project (including the related characteristic factors of the natural environment, ecology, electromagnetic and other factors for the Movies
Sound) awareness and attitude towards environmental protection measures taken by the project proposal, the project environmentally sensitive target recognition, does not support the construction of
And other reasons.
Questionnaire should contain the basic engineering briefing, the survey collected basic information (such as name, age, sex, educational process
Content positional relationship, career, address, telephone number, and engineering), investigators contact information.
11.4.4 Survey Results
Number brief survey samples, the effective sample size, the number of respondents, the basic statistics, the relevant organizations and grass-roots organizations,
Under investigation unit name and quantity. Available statistics expressed in the form.
The number of survey to express their views on the content of each object and its proportion of the survey, the case put forward opinions and suggestions. It should be noted about the survey,
Minutes and other required records.
11.5 Results of public participation
Press comments relevant units, consulting expert opinion, public opinion surveys, and statistical analysis are classified bulletin feedback opinions and categorize
Comment on the basis of a comprehensive analysis. For each category of comments, it should be carefully analyzed, and recommendations adopted or not adopted and justified.
Do not support public construction projects to pay a return visit, and gives cause analysis and treatment recommendations.
Appendix A
(Normative)
Power transmission project environmental impact report and the preparation of the special requirements set
A.1 special setting contents
Power transmission project environmental impact report should generally include engineering analysis, environmental Investigation and evaluation, construction of environmental impact assessment (which
Ecological impact assessment level for the three or more thematic set, sound, air, surface water to make a general analysis, vibration, groundwater, solid waste, electricity
Content does not involve magnetic), run the Environmental Impact Assessment (wherein the electromagnetic acoustic set topic, surface water, solid waste, environmental risks make general points
Content analysis, air, vibration, groundwater is not involved), environmental protection measures and their economic and technical feasibility studies, environmental management and monitoring plan, public
Public participation, and other special evaluation findings and recommendations.
In addition to the content of the special A.2 has been separately stated, according to the content of the standard text to write.
A.2 Compilation Contents
A.2.1 Introduction
A brief description of the main characteristics of the construction project environmental impact assessment of the work process, mainly concerned with environmental issues and the environmental impact statement
To conclusion.
A.2.2 General
A.2.2.1 Preparation Basis
A.2.2.2 Evaluation Factors and Evaluation Criteria
Disaggregated Status evaluation factors and prediction evaluation factor, given the environmental quality standards for each evaluation factor performed, emission standard or control limits.
Evaluation factor may be the standard 4.4 Table 1 requires selection; evaluation criteria may be the standard 4.5 requires selection.
A.2.2.3 Assessment Grade
A.2.2.4 scope of the evaluation
A.2.2.5 environmental protection objectives
A.2.2.6 Evaluation Key
A.2.3 Project Overview and engineering analysis
A.2.3.1 Project Overview
Analysis A.2.3.2 Conformance with policies and regulations.
A.2.3.3 identify environmental factors
A.2.3.4 ecological impact pathway analysis
A.2.3.5 feasibility study environmental protection measures
A.2.4 Environmental Situation Investigation and Evaluation
A.2.4.1 Regional Overview
A.2.4.2 Natural Environment
A.2.4.3 social environment
A.2.4.4 Electromagnetic Environment
A.2.4.5 acoustic environment
A.2.4.6 ecology
A.2.4.7 Surface Water Environment
A.2.5 Construction of Environmental Impact Assessment
A.2.5.1 ecological impact prediction and evaluation
A.2.5.2 Acoustic Environmental Impact Analysis
A.2.5.3 construction dust analysis
A.2.5.4 Solid Waste Environmental Impact Analysis
A.2.5.5 sewage analysis
A.2.6 Runtime Environment Impact Assessment
A.2.6.1 Electromagnetic Environmental Impact Assessment and Prediction
A.2.6.2 Acoustic Environmental Impact Assessment and Prediction
A.2.6.3 Surface Water Environmental Impact Analysis
A.2.6.4 Solid Waste Environmental Impact Analysis
A.2.6.5 Environmental Risk Analysis
A.2.7 environmental protection measures and their economic, technical feasibility studies
A.2.7.1 Pollution Control Measures
Economic and technical feasibility analysis A.2.7.2 Measures
A.2.7.3 Environmental Protection Measures
A.2.7.4 Estimated Investment environmental protection measures
A.2.8 Environmental Management and Monitoring Plan
A.2.8.1 Environmental Management
A.2.8.2 Environmental Supervision
A.2.8.3 Environmental Monitoring
A.2.9 Public Participation
A.2.9.1 public participation process
A.2.9.2 first announcement
A.2.9.3 second announcement
A.2.9.4 public survey
A.2.9.5 public adoption of opinions
A.2.10 evaluation findings and recommendations
In summarize all evaluation on the basis of simple, accurate, objective summary of the implementation of construction projects in various stages of production and life
Activity relationships with the local environment, clear and general environmental impact particular case, the provisions of environmental protection measures, environmental protection
Protection angle analysis, the viability of the project's conclusion. Construction should include an overview of state of the environment and the major environmental problems of power transmission project, ring
Environmental impact prediction and evaluation findings, the stability of discharge standards, regulations and policies consistent with the relevant planning and environmental measures reliability and rationality, public
Public participation acceptance, the total content of the conclusions and recommendations.
A.2.11 annexes and appendices
Annex EIA should include power of attorney, the evaluation criteria of approval documents, approval of the relevant authorities; may also include a power transmission project based on documents,
Environmental Status and analog monitor quality assurance documentation, reference documentation and other necessary documents, materials and the like.
Appendix B
(Normative)
The format and requirements for power transmission project environmental impact report form
Table B.1 report format
B.1.1 cover format
Construction project environmental impact statement
project name:
Construction unit:
Prepared by:
Date of preparation: XXXX XX in January
B.1.2 Certificate microprinting member
Attached as is the side length of one third of the original qualification certificate microprinting microprinting member. And the ring name of the project should be indicated on the bear microprinting member
Environmental impact assessment document type and rating agencies stamped seal and legal representative of the chapter names.
B.1.3 Assessment and Evaluation Unit Personnel
Evaluation Unit: (seal)
Item Number:
Report Title:
Project manager:
(Vocational qualification certificate registration number:)
The main staffing situation
Name Title Signature Certificate duties
B.1.4 Report Form text format
According to the content and format requirements for environmental protection department under the State Council put forward the construction project environmental impact report form, fill power transmission
Project environmental impact statement forms the body of relevant content.
B.2 Annex drawings and thematic evaluations
B.2.1 thematic evaluations
twenty one
Electromagnetic environmental impact should be set thematic evaluations, the evaluation level, evaluation of the content and format of the relevant electromagnetic environmental impact assessment in accordance with this standard
Requirements.
When it comes to ecologically sensitive areas, should be set up ecological thematic evaluations, the evaluation level, evaluation of the content and format in accordance with the present standards on power transmission
Ecological Assessment project requirements.
According to carry out the work required public participation, public participation should be set thematic evaluation of its content and format of the standard reference to the relevant public
Special requirements to participate in the preparation, if necessary, reduce the depth.
B.2.2 environmental impact statement should be attached to the following accessories, drawings
File Attachments 1 agreed to carry out preparatory work for the project
Annex 2 Environmental impact assessment and other relevant documents
Figure 1 Location map (including stations and lines, reflecting the administrative division, water, etc.)
Figure 2 substation (or switch station, Series Compensation Station, converter station) general layout schematic
Figure 3 schematic line route
Figure 4 environmental protection measures layout
Figure 5 thematic maps required for evaluation
twenty two
Appendix C
(Informative)
Under high voltage overhead transmission lines spatial frequency electric field strength calculation
C.1 equivalent charge calculated on per unit length wire
High voltage transmission lines on a charge equivalent line charge is due to high voltage transmission lines is much smaller than the radius r erection height h, so the equivalent charge
The position can be considered the geometric center of the transmission line.
Let transmission line is infinitely long and parallel to the ground, the ground can be regarded as a good conductor, the use of power lines on the mirror method to calculate the equivalent power
Netherlands.
To calculate the equivalent multi-conductor line charge on the wire, you can write the following matrix equation:
Figure C.1 ground voltage calculation map
twenty three
Each wire-to-ground voltage components are:
UA = (303.1 j0) kV
UB = (- 151.6 j262.5) kV
UC = (- 151.6 - j262.5) kV
[Λ] matrix obtained by the mirror principle. Ground zero for the potential of a plane, the induced charge corresponding to the ground by ground wire image
Instead of the charge, with i, j, represents the actual wires parallel to each other, with i ', j', which represents the image, shown in Figure C.2,
Potential coefficients can be written as:
Where: ε0-- vacuum permittivity, mF/10
Ri-- transmission wire radius, the wire can be used to split a single wire radius equivalent substitution, Ri is calculated as:
Where: R-- split wire radius, m; (as shown in Figure C.3)
n-- times the number of wires;
r-- second wire radius, m.
By the [U] and matrix [λ] matrix can be solved [Q] matrix using Equation (C1).
Figure C.2 Figure C.3 potential coefficient calculation equivalent radius calculation map
For three-phase AC line voltage due time vector, use the plural when calculating the voltage of each phase conductor, said:
twenty four
iU = iRU iIjU (C6)
Accordingly, the number of charges is complex:
iQ = iRQ iIjQ (C7)
Formula (C1), respectively, represent a matrix that is the relationship between the two parts of the complex number of the real and imaginary parts:
[RU] = [λ] [RQ] (C8)
[IU] = [λ] [IQ] (C9)
C.2 calculate the electric field generated by an equivalent charge
Calculation of the maximum electric field strength of the ground, usually designed to take maximum sag when the minimum wire to ground level.
When the equivalent amount of electric charge per unit length of each wire is obtained, the electric field strength at any point in space can be calculated according to the principle of superposition,
In the (x, y) electric field components Ex and Ey point can be expressed as:
Where: xi, yi - i conductor coordinates (i = 1,2, m);
m - the number of wires;
Li, L'- i, respectively wire and its mirror point to calculate distance, m.
For three-phase AC line, according to the formula (C8) and (C9) obtained at any point of space charge electric field strength calculation of the horizontal and vertical
Straight component is:
Where: xRE ---- by the real part of the charge wire, producing a strong horizontal component of the field at that point;
xIE ---- by the imaginary part of the charge wire, producing a strong horizontal component of the field at that point;
yRE ---- by the real part of the charge wire, producing a strong vertical component of the field at that point;
yIE ---- by the imaginary part of the charge wire, producing a strong vertical component of the field at that point.
Synthetic electric field strength at that point was:
xjEEE xIxR) (= yjEE yIyR) (
yx EE = (C14)
Where:
twenty two
xIxRx EEE = (C15)
twenty two
yIyRy EEE = (C16)
At ground level (y = 0) the horizontal component of the electric field strength:
0 = xE
C.3 Calculation examples
C.3.1 Calculation conditions
Three-phase single-circuit 500kV overhead transmission line structure shown in Figure C.4, wire horizontally erection, use n = 4 bundled conductors,
Find a point P (x = 15m, y = 1m) at power frequency electric field intensity value.
Figure C.4 Calculation example Figure
C.3.2 charge equivalent calculation unit length of the wire
Split wire radius R = 0.457
2 × = 0.323 m
Equivalent wire radius iR = 0.323 × 4
323.0
0148.04 × = 0.211 m
Wire-to-ground voltage aU = (303.1 j0) kV
bU = (- 151.6 j262.5) kV
cU = (- 151.6-j262.5) kV
And so it can be written as the real and imaginary parts of two matrices:
According to wire symmetrical relationship, we can see:
So write potential coefficient matrix:
Press the formula (C1) can be obtained:
The above two matrix equation solver, can get the equivalent value of the charge of the matrix:
C.3.3 calculate point P frequency horizontal components and vertical components of the electric field intensity
Coordinates of each wire as shown, by the P point C.5 (x = 15m, y = 1m) coordinates can be obtained:
Figure C.5 each wire plot
The horizontal component of the field strength in the real charge RQ point P generated:
Strong horizontal component of the field in the imaginary part of the charge IQ point P generated as follows:
Therefore, the horizontal component of the field strength at P:
xE = (-0.044 - j0.233) kV/m
xE = 2 20.044 0.233 = 0.24 kV/m
Field vertical component of the real part of the electric charge generated at P RQ:
Field vertical component of the imaginary part of the electric charge generated at P IQ:
Therefore, the vertical component of the field strength at P:
yE = (- 8.420 - j1.698) kV/m
yE = 2 28.420 1.698 = 8.59 kV/m
Appendix D
(Informative)
Under high voltage overhead transmission lines spatial frequency magnetic field strength calculation
Since the frequency electromagnetic properties under quasi-static case has characteristics, only the magnetic field lines generated by the current. Application of Ampere's law, will be calculated
Results by vector superposition, can be drawn from the strength of the magnetic field around the wire.
And the electric field strength calculation is different for mirror conductor consideration, compared with the wire situated at a height of these mirrors is located on the ground wire
Deep distance d:
d ρ660 = (m) (D1)
Where: ρ-- earth resistivity, m⋅Ω;
f-- frequency, Hz.
In many cases, consider only the actual wire in space, ignoring its image is calculated, and the results have been sufficiently realistic.
As shown in FIGS D.1, i do not consider lead mirror, calculate the magnetic field strength at point A it produces:
H =
222 Lh
π (A/m) (D2)
Where: I-- wire i current value, A;
h-- wire and prediction point height, m;
L - conductor and the prediction point horizontal distance, m.
For three-phase line, formed by the different phases of the magnetic field strength of horizontal and vertical components should be considered separately phase angle between the current, according to the phase
Bit vector synthesis. Synthetic track rotation vector space is an ellipse.
Figure D.1 magnetic field vector diagram
Appendix E
(Informative)
Simplified theoretical DC transmission lines resultant electric field strength calculation programs and calculation steps
E.1 methods source
Important parameters determine the environmental impact of the DC transmission line is close by the ion current density and the electric charge on the wire, co-produced space charge
As the electric field strength. Due to the presence of the entire space below the line a lot of space charge generated by corona make this calculation becomes quite complex.
The standard recommended by the analytical method of calculation used Deutsch assumption that space charge does not affect the direction of the field, which affects only
size.
E.2 basic assumptions
E.2.1 space charge affects only the amplitude of field strength without affecting its direction, that Deutsch assumptions.
Es = A · E (E1)
Where:
When the presence of synthetic Es-- space charge electric field strength, kV/m;
A-- resultant electric field intensity and the ratio of the nominal field strength, scalar functions;
E-- nominal electric field strength, kV/m.
E.2.2 corona wire surface potential is maintained at inception voltage value V0, when the wire to ground potential V, the wire surface A value of Ae:
Ae = V0/V (E2)
Mirror stepwise method or charge simulation method to calculate the space charge no end no strong space charge field strength along the power line E.
E.3 A calculation of scalar functions
∫ = Veee EdAAA φ φερ 2022
(E3)
∫ ∫- = V Vm dEdVV 0 200 /) (φ φηερ (E4)
Where:
eρ - conductor surface charge density, nC/m3, available secant iterative method is obtained;
0ε - vacuum permittivity, pF/m;
φ - space without space charge potential of a point, kV;
mρ - wire average surface charge density, nC/m3, as determined eρ secant iterative method of initial value;
η - integration variable.
E.4 Calculation of resultant electric field strength Es
Es press (E1) formula.
   
 
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