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GB/T 40586-2021: Technical requirements of grid-related protection of grid-connected power
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Technical requirements of grid-related protection of grid-connected power
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GB/T 40586-2021
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Basic data | Standard ID | GB/T 40586-2021 (GB/T40586-2021) | | Description (Translated English) | Technical requirements of grid-related protection of grid-connected power | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | F21 | | Word Count Estimation | 13,124 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 40586-2021: Technical requirements of grid-related protection of grid-connected power---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.
Technical requirements of grid-related protection of grid-connected power
ICS 29.240.01
CCSF21
National Standards of People's Republic of China
Technical requirements for grid-connected protection of grid-connected power supplies
Released on 2021-10-11
2022-05-01 implementation
State Administration of Market Supervision and Administration
Issued by the National Standardization Management Committee
Table of contents
Foreword Ⅰ
1 Scope 1
2 Normative references 1
3 Terms and definitions 1
4 General requirements 3
5 Technical requirements for network-related protection of synchronous generators 4
5.1 Stator winding symmetrical overload protection 4
5.2 Rotor winding overload protection 4
5.3 Low-excitation loss-of-excitation protection 4
5.4 Out-of-step protection 4
5.5 Frequency Abnormal Protection 5
5.6 Turbine overspeed limit (OPC) 5
5.7 Overexcitation protection 5
5.8 Generator stator overvoltage protection 5
5.9 Transformer zero sequence overcurrent protection 5
5.10 Generator compound voltage overcurrent protection 5
5.11 Type 1 auxiliary machine protection 6
5.12 Zero power protection 6
5.13 Overexcitation limit and overexcitation protection 6
5.14 Overexcitation limit 7
5.15 Low excitation limit 7
5.16 Stator current limit 7
5.17 Voltage adjustment rate 7
5.18 Steam turbine power load imbalance control 8
5.19 Reactive power limit 8
5.20 Other 8
6 Technical requirements for network-related protection of new energy plants and distributed power sources 8
6.1 High/low voltage protection 8
6.2 Frequency Abnormal Protection 9
Reference 10
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents"
Drafting.
Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying patents.
This document was proposed by the China Electricity Council.
This document is under the jurisdiction of the National Grid Operation and Control Standardization Technical Committee (SAC/TC446).
Drafting organizations of this document. China Electric Power Research Institute Co., Ltd., State Grid Corporation of China National Electric Power Dispatching Control Center, South China
Grid Electric Power Dispatching Control Center, NARI Group Co., Ltd., Inner Mongolia Electric Power (Group) Co., Ltd., Tsinghua University, State Grid Shanghai Power
Power Company, State Grid Anhui Electric Power Co., Ltd., State Grid Liaoning Electric Power Co., Ltd., State Grid Corporation Northwest Branch, State Grid Corporation East
North Branch, State Grid Beijing Electric Power Company, Guangxi Power Grid Co., Ltd., State Grid Qinghai Provincial Electric Power Company Electric Power Research Institute, State Grid Jiangxi
Provincial Electric Power Co., Ltd. Electric Power Research Institute, Central China Branch of State Grid Co., Ltd.
The main drafters of this document. Chen Guoping, Li Wenfeng, Zhou Cheng, Sun Huadong, Xu Tao, Guo Qiang, Yu Zhao, An Ning, Zhang Jianyun, Wang Chao, He Fei,
Leng Xiwu, Zhou Ji, Lu Ming, Niu Shuanbao, Zhang Yanjun, Qi Jun, Huo Chao, Yin Hongmin, Wei Ping, Sun Xiaoqiang, Guilin, Song Xingguang, Gu Jun, Tang Wei,
Ma Shijun, He Hong, Wang Dongyang, Zhao Xuemao, Wang Wei, Gong Cheng, Yang Chao, Pu Jun, Xiao Yang, Shao Dejun, Xiao Ming, Zou Jin, Zhao Hongguang, Wang Jili,
Han Zhiyong, Li Zhiqiang, Zhang Zhenyu, Gao Lei, Wang Guanhong, Li Ying, Ke Xianbo, Ren Longfei, Liu Yang, Wang Kefei, Wang Yang, Bian Hongyu, Ma Xiaowei.
Technical requirements for grid-connected protection of grid-connected power supplies
1 Scope
This document specifies the overall requirements for grid-related protection of grid-connected power supplies, technical requirements for grid-related protection of synchronous units, new energy plants and distributed
Power supply network protection technical requirements.
This document applies to thermal power, gas and nuclear power units with a single unit capacity of 100MW and above, hydropower and solar thermal power units with a capacity of 40MW and above, and
Connect to 220kV and above synchronous generator sets, and connect to 35kV and above new energy stations, energy storage power stations, and substations.
Cloth-type power supply and tuning camera. Refer to the implementation of other grid-connected power supplies.
2 Normative references
The contents of the following documents constitute the indispensable clauses of this document through normative references in the text. Among them, dated quotations
Only the version corresponding to that date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to
This document.
GB/T 31464 Grid Operation Guidelines
GB 38755 Safety and Stability Guidelines for Power Systems
GB/T 38969 Technical Guidelines for Power System
DL/T 684 Large generator transformer relay protection setting calculation guide
DL/T 1523 Synchronous generator phase advance test guide
DL/T 1648 Technical Specification for High and Low Voltage Ride Through Frequency Converters of Auxiliary Equipment in Power Plants and Substations
DL/T 5153 Technical specification for auxiliary power design of thermal power plant
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Grid-related protection
In the protection and control devices of generator sets (including new energy) and reactive power adjustment equipment such as synchronous cameras and static synchronous compensators, the action
The behavior and parameter settings are related to the grid operation mode, or the part that needs to be coordinated with the grid-side safety automatic device.
Note. For example, synchronous generator set stator overvoltage protection, rotor overload protection, loss of excitation protection, loss of step protection, frequency abnormality, overspeed protection, top value and overexcitation limit
System, fan over-voltage protection, etc.
[Source. GB 38755-2019, 2.12]
3.2
Loss-of-fieldprotection
The protection when the generator partly or completely loses excitation.
[Source. DL/T 1309-2013, 3.2]
3.3
Out-of-stepoperation
The generator loses synchronization due to disturbances, while maintaining full or partial excitation operation.
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