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GB/T 30944-2014: Guide for energy losses calculation of small hydropower grid
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 30944-2014 | English | 509 |
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Guide for energy losses calculation of small hydropower grid
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GB/T 30944-2014
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Basic data | Standard ID | GB/T 30944-2014 (GB/T30944-2014) | | Description (Translated English) | Guide for energy losses calculation of small hydropower grid | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | K20 | | Classification of International Standard | 29.160.20 | | Word Count Estimation | 22,229 | | Date of Issue | 7/8/2014 | | Date of Implementation | 1/19/2015 | | Regulation (derived from) | 2014 National Standards Bulletin No. 18 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the small hydropower grid power loss calculation and analysis. This standard applies to power loss small hydro power based small hydropower grid computing, calculating statistics, analysis and loss reduction effect. | GB/T 30944-2014: Guide for energy losses calculation of small hydropower grid---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Guide for energy losses calculation of small hydropower grid
ICS 29.160.20
K20
National Standards of People's Republic of China
Small Hydro Power Energy Loss Calculation Guide
Issued on. 2014-07-08
2015-01-19 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Table of Contents
Preface Ⅰ
1 Scope 1
1 2 General
2.1 Calculation Principle 1
2.2 Basic Information 1
2.3 Option 1 is the day of
2.4 1 representative of daily load record
3 element 1 Loss Calculation
3.1 Line Energy Loss Calculation 1
3.2 Transformer power loss calculation 1
Power consumption 3.3 capacitors and other components of the calculation 2
3.4 total power loss is the day of the grid 3
Annual loss of electricity grid 3.5 3
4 grid energy loss calculation 4
4.1 35kV grid power and loss calculation above 4
4.2 10kV (20kV) grid power loss calculation 4
4.3 380V/220V grid power loss calculation 7
5 Energy Loss Analysis 8
Statistical loss rate 8 5.1
5.2 theoretical loss rate 8
5.3 Comparative analysis 8
5.4 Statistical Analysis 8
6 loss reduction effect is calculated 9
6.1 adjusting the voltage drop loss effect calculated 9
6.2 Loss Reduction effect after the installation of reactive power compensation device 10 is calculated
6.3 reduce wire resistance after the loss reduction effect is calculated 10
Appendix A (normative) power line loss calculation method 12
Appendix B (normative) Transformer power loss calculation method 16
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
This standard is proposed and managed by the Ministry of Water Resources.
This standard by the Ministry of Water Resources Research Institute for Rural Electrification is responsible for drafting.
The main drafters of this standard. F Wang Ping, Xu Jin Cai, Zhang Guan Song, Zhang Jian, China, Dongtai Fu, Xu Guojun, Zhang Wei.
Small Hydro Power Energy Loss Calculation Guide
1 Scope
This standard gives small hydropower grid power loss calculation and analysis.
This standard applies to power loss small hydro power based small hydropower grid computing, calculating statistics, analysis and loss reduction effect.
2 General
2.1 Calculation Principle
SHP grid power loss should include the sum of the elements of the grid power loss, power loss SHP grid shall be calculated in the transmission and distribution
Calculated on the basis of the elements of power grid loss of lines, transformers, compensation and adjustment of equipment as well as measurement and protection devices.
2.2 Basic Information
SHP electricity grid losses should be calculated on the basis of collected basic information on the following.
Power plants, substations and run wiring diagram grid; parameter data transformers, lines, condensers, capacitors, reactors and other elements of the package
Including nameplate data, measured data as well as the active power of each network element, reactive power and current, voltage and other parameters.
Parameter distribution lines each segment; nameplate parameters of distribution transformers; substation and power plants on behalf of the outlet end of May and August with load song
Line, active power, reactive power and voltage curves; users and public distribution transformers and distribution transformers is the day of the full month of active power, reactive power
Electricity; capacity and location of the distribution line capacitor means and a full month into operation time.
2.3 days to choose representatives
Chosen to represent the date according to the following principles.
a) Run small hydropower grid, flow distribution can represent the calculation of normal;
b) date is the day of the power supply, close to the calculated period (month, quarter, year) average daily power supply;
c) the user's electricity situation is normal, normal weather conditions, the temperature close to the calculation of the average temperature;
d) to be able to represent the calculation period (month, quarter, year) wet season, dry season various load conditions, select 3-4 representatives of days.
2.4 Representative daily load record
Representative daily load shall be complete and meet the computing needs, should include the whole point 24h power plants, substations, lines and other output current, output
A current, active power, reactive power, voltage, and power sub-period day record, and draw the daily load curve by the hour record.
3 loss calculation element
3.1 Line Energy Loss Calculation
Energy Loss Calculation line with its daily load curve is based on RMS current method can be used, the average current, maximum forward current method
Line calculation, calculation method, see Appendix A.
3.2 Transformer power loss calculation
The power loss of the transformer should include no-load loss and load loss of electricity power.
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