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DL/T 2034.2-2019: Technical conditions of power energy substitution equipment access to power grid -- Part 2: electric boiler
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Technical conditions of power energy substitution equipment access to power grid -- Part 2: electric boiler
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DL/T 2034.2-2019
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Basic data | Standard ID | DL/T 2034.2-2019 (DL/T2034.2-2019) | | Description (Translated English) | Technical conditions of power energy substitution equipment access to power grid -- Part 2: electric boiler | | Sector / Industry | Electricity & Power Industry Standard (Recommended) | | Classification of Chinese Standard | F20 | | Classification of International Standard | 27.010 | | Word Count Estimation | 8,832 | | Date of Issue | 2019-06-04 | | Date of Implementation | 2019-10-01 | | Quoted Standard | GB/T 156; GB/T 10820; GB/T 4285; GB/T 4549; GB 50052; GB 50053; GB 50054; GB 50056; GB 50059; DL/T 448; DL/T 2034.1-2019 | | Regulation (derived from) | Natural Resources Department Announcement No. 7 of 2019 | | Issuing agency(ies) | National Energy Administration | | Summary | This standard specifies requirements for electric boiler equipment access to the power grid, line protection requirements, measurement requirements, access performance requirements, information interaction requirements with the power grid, and testing requirements. This part is applicable to the process of design, production, procurement, installation, operation and maintenance management of 35 kV, 10 kV and 220 V/380 V voltage level electric boiler equipment connected to the power grid, and 6 kV, 20 kV voltage level electric energy substitute equipment access The power grid can be implemented with reference to 10 kV. Wall-mounted electric heating equipment, household electric heating equipment, etc. do not apply to this standard. | DL/T 2034.2-2019: Technical conditions of power energy substitution equipment access to power grid -- Part 2: electric boiler
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Technical conditions of power energy substitution equipment access to power grid-Part 2.electric boiler
ICS 27.010
F 20
Record number. 63143-2018
People's Republic of China Electric Power Industry Standard
Technical conditions for power substitution equipment to connect to the grid
Part 2.Electric boiler
2019-06-04 released
2019-10-01 implementation
Issued by National Energy Administration
Table of contents
Foreword...II
1 Scope...1
2 Normative references...1
3 Definition of terms...1
4 Requirements for access to the grid...2
5 Line protection requirements...3
6 Measurement requirements...3
7 Access performance requirements...4
8 Information interaction requirements with the power grid...4
9 Testing requirements...5
Foreword
--Part 1.General rules;
--Part 2.Electric boiler;
--Part 3.Distributed electric heating equipment.
This part is drafted in accordance with the rules given in GB/T 1.1-2009.
Please note that certain contents of this standard may involve patents, and the issuing organization of this document does not bear the responsibility for identifying these patents.
This part was proposed by the China Electricity Council.
This part is under the jurisdiction of the National Smart Grid User Interface Standardization Technical Committee.
The main drafters of this section. China Electric Power Research Institute Co., Ltd., State Grid Co., Ltd., Beijing Ruiteai Energy Technology Co., Ltd.
Co., Ltd., State Grid Inner Mongolia Eastern Electric Power Co., Ltd., State Grid Tianjin Electric Power Company, State Grid Beijing Electric Power Company, China Southern Power
Grid Co., Ltd., State Grid Shanghai Electric Power Company, Shandong Dexiang Electrical Technology Co., Ltd., Wasion Information Technology Co., Ltd.,
Net Xinjiang Electric Power Co., Ltd., Guangzhou Naiqi Electric Technology Co., Ltd., Hebei Jiacheng Energy Technology Development Co., Ltd., Yantai Oriental Weston
Electric Co., Ltd., Hubei Kaijia Energy Technology Group Co., Ltd.
The main drafters of this section. Zhong Ming, Cheng Ling, He Sheng, Wang Yan, Yan Huaguang, Wang Xin, Liu Anan, Qin Jian, Zhang Jian, Sun Qinfei, Jin
Lu, Zhang Yin, Wang Lulu, Li Kecheng, Ma Lei, Yu Bo, Ma Liang, Chen Guowei, Wen Hui, Li Xing, Wu Zhijun, Xie Zunchen, Zhang Shian.
If you have any comments or suggestions during the implementation of this standard, please send them to the Standardization Management Center of the China Electricity Council (Address. Beijing West
No. 1 Ertiao, Baiguang Road, City District, Zip Code. 100761).
Technical conditions for electric energy substitution equipment to connect to the grid. Part 2.Electric boiler
1 Scope
This section specifies requirements for electric boiler equipment to connect to the power grid, line protection requirements, measurement requirements, access performance requirements, and information about the power grid
Interaction requirements and testing requirements.
This part is applicable to the design, production, procurement and installation of 35kV, 10kV and 220V/380V voltage level electric boiler equipment connected to the grid
And operation and maintenance management and other processes, 6kV, 20kV voltage level electric energy substitution equipment can be connected to the grid with reference to 10kV implementation.
Wall-mounted electric heating equipment, household electric heating equipment, etc. do not apply to this standard.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article
Pieces. For undated references, the latest version (including all amendments) applies to this document.
GB/T 156 standard voltage
GB/T 10820 Thermal efficiency and thermal test methods for domestic boilers
GB/T 14285 Technical Regulations for Relay Protection and Safety Automatic Equipment
GB/T 14549 Power quality public grid harmonics
GB/T 14598.9 Measuring Relays and Protection Devices Part 22-3.Electrical Disturbance Test-Radiated Electromagnetic Field Immunity
GB/T 14598.10 Measuring Relays and Protection Devices Part 22-4.Electrical Disturbance Test Electrical Fast Transient/Pulse Group Immunity Test
GB/T 14598.13 Electrical Relay Part 22-1.Electrical Disturbance Test of Measuring Relays and Protection Devices 1MHz Pulse Group Resistance
Disturbance test
GB/T 14598.14 Measuring Relays and Protection Devices Part 22-2.Electrical Disturbance Test-Electrostatic Discharge Test
GB 50052 Code for Design of Power Supply and Distribution System
GB 50053 20kV and below substation design code
GB 50054 Low Voltage Power Distribution Design Code
GB 50056 Code for Design of Electric Heating Equipment Power Installation
GB 50059 35kV～110kV Substation Design Code
DL/T 448 Technical Management Regulations for Electric Energy Metering Devices
3 Definition of terms
The following terms and definitions apply to this document.
3.1
Electric boiler
A complete set of electric heating equipment that uses the input electric energy to produce hot water, steam, hot air or other heat medium, and is fixedly installed. Press whether
Equipped with heat storage device, electric boiler equipment is divided into two categories. heat storage electric boiler and direct heating electric boiler; according to the heating principle, it is divided into resistance type (referred to by
Resistance element heating) boiler equipment, electrode boiler equipment, electromagnetic boiler equipment, etc.
4 Requirements for access to the grid
4.1 General principles
The electric boiler should meet the following requirements when connected to the grid.
a) The regulations that should be met;
b) Do not endanger the personal safety of the public or operators;
c) It should not affect the safe and stable operation of the power grid;
d) The short-circuit capacity of the electric boiler should be less than the short-circuit capacity of the public grid access point;
e) The connection point between the electric boiler and the power grid should adopt a circuit breaker that is easy to operate, lockable, and has manual and automatic operation;
f) The interface device between the electric boiler and the power grid should meet the withstand voltage level of the electrical equipment of the corresponding voltage level.
4.2 Access method
The way that the electric boiler is connected to the grid should meet the following requirements.
a) Electric boilers powered by 220/380V and power less than or equal to 10/30kVA should be connected to the low-voltage distribution box;
The power supply line is connected to the power distribution cabinet of the power distribution room;
b) Electric boilers powered by 10kV should be powered by a dedicated loop;
c) Electric boilers powered by 35kV power supply should be constructed with a power distribution system.
4.3 Requirements for voltage level selection
The voltage level of the electric boiler equipment connected to the grid should be based on the local grid situation, the electric capacity of the electric boiler equipment, and the optional power supply of the electric boiler equipment
The voltage is determined and should meet the requirements of GB/T 156; when the power supply distance is relatively close and conditions permit, the electric boiler equipment should choose 10kV
Power supply; when the transmission distance is long, a higher voltage power supply should be selected to reduce transmission and distribution losses and costs, and should be listed in Table 1.
Choose from the power supply voltage level.
4.4 Technical requirements for substation and distribution
4.4.1 Operating environment
During the design, installation and use of power distribution, relevant environmental factors should be considered, including. altitude, ambient temperature, relative humidity,
In terms of seismic grade, substations of 10kV and below should meet the requirements of GB 50053, and substations greater than 10kV should meet the requirements of GB 50059.
4.4.2 Power distribution requirements
For electric boilers with a capacity greater than or equal to 25 MW, an independent power distribution system should be adopted. Other requirements are as follows.
a) For applications where heat is supplied only by electric boiler equipment, the power distribution should be based on load above level 2, and the auxiliary equipment should also be 2
Class load distribution;
b) In addition to the heating of electric boiler equipment, if there are other applications where there are other backup heating sources, the power distribution can be based on the level 3 load, but the boiler
Auxiliary equipment and other equipment should be distributed according to load above level 2.
4.4.3 Distribution capacity
The power distribution capacity should meet the capacity requirements of the installed electric boiler equipment, including the power distribution capacity requirements of auxiliary equipment, and the design of the power supply and distribution system
It should meet the requirements of GB 50052, and the design of electric boilers should meet the requirements of GB 50056.
4.5 Principles of protective grounding
When the electric boiler is connected to the power grid and equipped with a transformer, the protective grounding method of the electric boiler should be considered. According to the actual protective grounding method of the electric boiler,
Line distribution design.
4.6 Requirements for distribution method
The power distribution laying method requirements are as follows.
a) When the electric boiler equipment less than or equal to 8MW is connected to the power grid, the outdoor part can adopt the overhead or underground line method;
b) When electric boiler equipment larger than 8MW is connected to the power grid, the outdoor part should adopt the direct-buried line method of casing or the installation of underground integrated pipe gallery.
Installation method
c) When an electric boiler larger than or equal to 25MW is connected to the power grid, if it is close to the existing substation, it can be directly connected to the existing substation; if
It is far away from the existing substation. After technical and economic comparison, it is advisable to build a special substation.
5 Line protection requirements
The line protection requirements are as follows.
a) When the electric boiler is connected to the power grid with voltage levels of 220V and 380V, the low-voltage switchgear of the distribution line and its protection device shall comply with
The regulations of GB 50054;
b) When the electric boiler is connected with a voltage level of 10～35kV, its protection device should meet the requirements of GB/T 14285.
6 Measurement requirements
When the electric boiler is connected to the power grid, the metering point of electricity consumption connected to the power grid shall be clearly defined, and in principle, it shall be set at the boundary point of property rights. Electric energy meter should be installed at the measuring point
Measuring device, its equipment configuration and technical requirements should comply with DL/T 448.The classification of Ⅰ, Ⅱ and Ⅲ can be based on the load capacity of electric boiler
The amount or monthly average power consumption is determined, see Table 2 for details. Electric boiler electric energy metering device should be equipped with the ability to transmit data to the grid metering/billing system
ability.
7 Access performance requirements
7.1 Power quality
The power quality of electric boiler equipment should meet the requirements, and the following requirements should also be met.
a) After the electric boiler is connected to the power grid, the power factor of the equipment should not be lower than 0.95.When it is lower, reactive power compensation and electric power factor should be installed for the electric boiler.
Energy quality management and other equipment to meet the technical requirements of power supply from the grid;
b) After the electromagnetic boiler is connected, the limit value of harmonic voltage and the allowable value of harmonic current injected into the public grid access point shall comply with GB/T 14549
Provisions.
7.2 Energy regulation
Electric boilers should have stepless or step-wise energy adjustment function. If it is step-wise energy adjustment, the energy value between each two steps should not exceed the following
Claim.
a) When the rated power of the electric boiler is less than or equal to 100kW, the difference between the two levels of energy is not more than 50% of the nominal power;
b) When the rated power of the electric boiler is greater than 100kW and less than or equal to.2000kW, the difference between the two levels of energy is not greater than the nominal power
25% of the rate;
c) When the rated power of the electric boiler is greater than.2000kW, the difference between the two levels of energy is not more than 20% of the rated power;
d) Electric boiler equipment should have low-load starting capability, and the maximum load at low-load starting should not exceed 10% of the rated power;
e) If the electric boiler cannot meet the above-mentioned energy adjustment requirements, it should be confirmed that the energy adjustment is carried out during the working process of the electric boiler or the
At the end, there will be no impact on the power grid or related equipment.
7.3 EMC requirements
The electromagnetic compatibility of electric boilers shall meet the requirements of 7.2, and the following requirements shall also be met.
a) Radiated electromagnetic field interference with severity level 3 specified in GB/T 14598.9;
b) Fast burst interference with severity level 3 specified in GB/T 14598.10;
c) 1MHz and 100kHz burst interference with severity level 3 specified in GB/T 14598.13;
d) The severity level specified in GB/T 14598.14 is level 3 electrostatic discharge interference.
7.4 Electrical safety
The electrical safety of electric boiler equipment shall meet the requirements of 7.3, and shall also meet the following requirements.
a) The electrical safety performance should meet the requirements of GB 50054;
b) Electrode type boilers should also be equipped with special leakage protection to prevent the circulating water of the boiler from being electrified and endangering personal safety.
7.5 Efficiency
The efficiency detection method of electric boilers should meet the requirements of GB/T 10820, and the efficiency should meet the following requirements.
a) The efficiency of the direct heating electric boiler should be greater than or equal to 96%;
b) The efficiency of the regenerative electric boiler should be greater than or equal to 90%.
8 Information interaction requirements with the power grid
The information interaction requirements between the electric boiler and the power grid are as follows.
a) The electric boiler power distribution system or control system should have the ability to communicate with the grid control or dispatching system, so that it can control the grid when necessary.
The control system transmits the required data and accepts the control or dispatch of the power grid;
b) Electric boiler equipment should be able to receive information and instructions from the power grid monitoring system, including start or stop signals and maximum power limit signals
Wait;
c) Electric boiler equipment should be able to provide rated power, actual operating power, current, voltage,
Information such as previous work/stop status;
d) The control system of electric boiler equipment should be able to be set up. the electric boiler's own control system controls its start and stop, and is monitored by the power grid.
The system controls the start and stop of the electric boiler, and the grid monitoring system limits the maximum operating power of the electric boiler.
9 Testing requirements
After the electric boiler is installed, the following requirements shall be tested according to the requirements in Table 3.
The detection method of power supply and distribution design should meet the requirements of GB 50052
The detection method of the electric device design of the electric boiler should meet the requirements of GB 50056
6 Protective grounding 4.5 Inspection
7 Distribution method 4.6 Inspection
8 Line protection 5
The detection method for 220V and 380V voltage levels should meet the requirements of GB 50054
The detection methods for other voltage levels should meet the requirements of GB/T 14285
9 Measurement requirements 6 Inspection
10 Power quality 7.1 The inspection method should meet the regulations
11 Energy adjustment 7.2 Inspection
12 Electromagnetic compatibility 7.3
The anti-radiated electromagnetic interference detection method should meet the requirements of GB/T 14598.9
The detection method of fast burst interference should meet the requirements of GB/T 14598.10
The detection method of burst interference should meet the requirements of GB/T 14598.13
The detection method of electrostatic discharge interference should meet the requirements of GB/T 14598.14
13 Electrical safety 7.4
The detection method should meet the requirements of GB 50054
Regulations that the testing method should meet
14 Efficiency 7.5 The detection method should meet the requirements of GB/T 10820
15 Information exchange 8 Inspection
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