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GB/T 40592-2021: Technical rules for automatic over-frequency generator tripping in electric power system
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| GB/T 40592-2021 | English | 249 |
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Technical rules for automatic over-frequency generator tripping in electric power system
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GB/T 40592-2021
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Basic data | Standard ID | GB/T 40592-2021 (GB/T40592-2021) | | Description (Translated English) | Technical rules for automatic over-frequency generator tripping in electric power system | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | F21 | | Word Count Estimation | 13,122 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 40592-2021: Technical rules for automatic over-frequency generator tripping in electric power system
---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 rules for automatic over-frequency generator tripping in electric power system
ICS 29.020
CCSF21
National Standards of People's Republic of China
Technical regulations for automatic high-frequency cut-off generator set in power system
powersystem
Released on 2021-10-11
2022-05-01 implementation
State Administration for Market Regulation
Issued by the National Standardization Management Committee
Table of contents
Foreword Ⅲ
1 Scope 1
2 Normative references 1
3 Terms and definitions 1
4 General requirements 1
5 Basic requirements for device configuration and setting 2
6 Principles of device configuration 2
7 Setting calculation 2
8 Coordinated configuration of high-frequency cutting machine, unit high-frequency protection, and steam turbine overspeed protection 3
Appendix A (informative) Allowable frequency abnormal operation capability of steam turbine generator set 4
Appendix B (informative) The theoretical derivation of the average frequency deviation of the single load model of the high-frequency cutting machine 5
Reference 9
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. State Grid Corporation of China National Electric Power Dispatching Control Center, China Electric Power Research Institute Co., Ltd.,
China Southern Power Grid Electric Power Dispatching Control Center, Central China Branch of State Grid Corporation, Northwest Branch of State Grid Corporation of China, State Grid Corporation of China
Southwest Branch, State Grid Sichuan Electric Power Company, State Grid Chongqing Electric Power Company, State Grid Jilin Electric Power Co., Ltd., State Grid Liaoning Electric Power Co., Ltd.
Company, State Grid Jiangsu Electric Power Co., Ltd., Yunnan Power Grid Co., Ltd., Guizhou Power Grid Co., Ltd.
The main drafters of this document. Ma Shiying, Zhou Jian, Tang Xiaojun, He Fei, Wang Chao, Zhang Zhiqiang, Jin Yiding, Niu Shuanbao, Xie Yan, Zhang Jian, Hu Yang,
Wang Shen, Zhang Zhi, Luo Xuzhi, Zhang Gang, Wei Ping, Wang Xin, Xu Guanghu, Xu Youping, Li Jian, Xu Xialing, Wang Biao, Zhang Tongzun, Liu Baisi, Huang Wei,
Ma Qinfeng, Wang Chunhua, Liu Kai, Li Haifeng, Zhang Xin, Liu Yang, Shao Dejun, Ma Xiaowei, Chen Xiangyi, Li Yiqun, Tan Zhen, Li Xiaojun, Wang Qi, Liu Liping,
Li Jing, Ji Ping, Huo Qidi, Shi Haobo.
Technical regulations for automatic high-frequency cut-off generator set in power system
1 Scope
This document specifies the basic requirements, configuration principles, and setting calculations for the configuration and configuration of automatic high-frequency cut-off generator sets in the power system.
And the principle of coordinated configuration with unit high frequency protection and steam turbine overspeed protection.
This document is suitable for high-frequency control of large power grids and high-frequency control of isolated power grids that are disconnected from the main grid after an accident. Outgoing local power grid and
Enterprise power grids with self-supplied power plants can be implemented by reference.
2 Normative references
The content of the following documents constitutes an indispensable clause of this document through normative references in the text. Among them, dated quotations
Only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to
This document.
GB 38755 Safety and Stability Guidelines for Power Systems
GB/T 38969 Technical Guidelines for Power System
DL/T 1234 Technical Specification for Power System Security and Stability Calculation
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Over-speed protection control of turbine; OPC
When the speed of the turbo-generator set exceeds the set value or reaches the specified limit
A control that automatically opens the regulating valve after the rotation speed to maintain the unit running at the rated rotation speed.
[Source. DL/T 1309-2013, 3.6, with modification]
3.2
Generator overfrequency protection
When the frequency value of the generator set is higher than the set value, it will send out a warning signal or corresponding protection action according to the setting.
4 General requirements
4.1 The automatic high-frequency cut-off of the power system (hereinafter referred to as the high-frequency cut-off) measure belongs to the third line of defense for the stable operation of the power system.
This is an emergency control measure taken to prevent the system frequency from rising sharply after a serious failure of the power grid.
4.2 When the power system has excessive active power, the transient frequency of the system exceeds the normal control range, and may cause system stability problems
At the same time, the configuration of high-frequency cutting device should be considered.
4.3 The power system high-frequency cut-off configuration should include different types of generator set combinations, grid structure and operation mode, etc.
4.4 The power system high-frequency cutting plan should be formulated, organized and implemented by the power grid operation department, and checked regularly. When the system condition has
When major changes are made, it should be reconfigured.
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