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GB/T 45119-2024: Technical requirement for insulation monitoring of low voltage power system in power plants and substations
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Technical requirement for insulation monitoring of low voltage power system in power plants and substations
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GB/T 45119-2024
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Basic data | Standard ID | GB/T 45119-2024 (GB/T45119-2024) | | Description (Translated English) | Technical requirement for insulation monitoring of low voltage power system in power plants and substations | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | K80 | | Classification of International Standard | 29.080 | | Word Count Estimation | 30,327 | | Date of Issue | 2024-12-31 | | Date of Implementation | 2025-07-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 45119-2024: Technical requirement for insulation monitoring of low voltage power system in power plants and substations
---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.
ICS 29.080
CCSK80
National Standard of the People's Republic of China
Insulation monitoring of low voltage power systems in power plants
Technical requirements
Released on 2024-12-31
2025-07-01 Implementation
State Administration for Market Regulation
The National Standardization Administration issued
Table of Contents
Preface III
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Basic Requirements 2
4.1 Working Environment 2
4.2 Electrical performance 3
4.3 Communications and others 4
5 Monitoring requirements 4
5.1 Classification 4
5.2 Functional indicators 4
5.3 Main methods 7
6 Installation Acceptance 8
6.1 Inspection 8
6.2 Layout 10
6.3 Acceptance 10
7 Operation and Maintenance 12
7.1 Run 12
7.2 Maintenance 12
Appendix A (Normative) Environmental adaptability and electromagnetic compatibility requirements 14
Appendix B (Informative) Insulation monitoring of low voltage DC ungrounded systems 15
Appendix C (Informative) Insulation monitoring of low voltage AC ungrounded systems 17
Appendix D (Informative) Insulation monitoring of low voltage AC grounding systems 19
Reference 23
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 for standardization documents"
Drafting.
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed and coordinated by the National Power System Plant Low Voltage Electricity Standardization Working Group (SAC/SWG21).
This document was drafted by. State Grid Sichuan Electric Power Company Electric Power Research Institute, Guangdong Qianshun Technology Co., Ltd., Zhejiang Kechang Electronics Co., Ltd.
Co., Ltd., State Grid Jibei Electric Power Co., Ltd. Electric Power Research Institute, Shenzhen Aotexun Electric Power Equipment Co., Ltd., State Grid Sichuan Province
Power Company, State Grid Chongqing Power Company, Shourui (Tianjin) Electrical Equipment Co., Ltd., Zhiyang Innovation Technology Co., Ltd., State Grid Sichuan
Integrated Energy Services Co., Ltd., Hebei Chuangke Electronic Technology Co., Ltd., China Datang Corporation Science and Technology Research Institute Co., Ltd., East China Electric
Power Testing Institute, State Grid Hebei Electric Power Co., Ltd. Electric Power Science Research Institute, Dalian Lushun Power Electronic Equipment Co., Ltd., State Grid Tian
Tianjin Electric Power Company, State Power Investment Corporation Science and Technology Research Institute Co., Ltd., China Southern Power Grid Research Institute Co., Ltd., Shenzhen Power Supply
State Grid Corporation of China, State Grid Jibei Electric Power Co., Ltd., State Grid Liaoning Electric Power Co., Ltd. Electric Power Research Institute, Shenzhen Taiang Energy Technology
Co., Ltd., Guangzhou Youwei Electronic Technology Co., Ltd., and Xuji Power Supply Co., Ltd.
The main drafters of this document are. Luo Yang, Li Jing, Dong Hanbin, Fang Yuan, Xu Yufeng, Wang Fengren, Tian Jinhu, Zhang Chao, Fan Songhai, Li Shuqi, Yang Jing,
Chen Shuxin, Chen Ying, Wu Chi, Ma Xiaomin, Ma Xinsheng, Nan Yin, Wang Jiayi, Nie Shugang, Li Yongxiang, Ma Yanqiang, Zhou Guangyuan, Wang Xuenan, Zhao Miao, Li Bingyu,
Miao Shuguo, Zhao Jun, Liu Qin, Luo Wenke, Li Lijun, Wu Feifei, Xu Guangda, Yang Zhongliang, Wang Hong, Wang Yingming, Zhang Wanzheng, Liu Zhongxiang, Zhao Yinglong,
Bao Chunfei, Luo Zhijun, Zheng Guoyong.
Insulation monitoring of low voltage power systems in power plants
Technical requirements
1 Scope
This document specifies the basic requirements, monitoring requirements, installation acceptance and operation and maintenance of low-voltage power systems in power plants and stations.
Require.
This document is applicable to the design, selection and installation of insulation monitoring of low voltage AC and DC power systems in power projects such as power plants, substations and converter stations.
and use.
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
GB/T 2423.1-2008 Environmental testing for electric and electronic products Part 2.Test methods Test A. Low temperature
GB/T 2423.2-2008 Environmental testing for electric and electronic products Part 2.Test methods Test B. High temperature
GB/T 2423.5-2019 Environmental testing Part 2.Test method Test Ea and guidance. Impact
GB/T 2423.10-2019 Environmental testing Part 2.Test methods Test Fc. Vibration (sinusoidal)
GB/T 2900.1 Basic terms of electrical engineering
GB/T 2900.33 Electrical terminology Power electronics technology
GB/T 4365 Electrical terminology - Electromagnetic compatibility
GB/T 17626.2 Electromagnetic compatibility test and measurement technology Electrostatic discharge immunity test
GB/T 17626.3 Electromagnetic compatibility test and measurement technology Part 3.Radio frequency electromagnetic field radiation immunity test
GB/T 17626.4 Electromagnetic compatibility test and measurement technology Electrical fast transient pulse group immunity test
GB/T 17626.5 Electromagnetic compatibility test and measurement technology Surge (impact) immunity test
GB/T 17626.6 Electromagnetic compatibility test and measurement technology - Immunity to conducted disturbances induced by radio frequency fields
GB/T 17626.8 Electromagnetic compatibility test and measurement technology Power frequency magnetic field immunity test
GB/T 17626.10 Electromagnetic compatibility test and measurement technology Damped oscillating magnetic field immunity test
GB/T 17626.18 Electromagnetic compatibility test and measurement technology Damped oscillation wave immunity test
DL/T 860 (all parts) Power automation communication networks and systems
3 Terms and definitions
The terms and definitions defined in GB/T 2900.1, GB/T 2900.33, GB/T 4365 and the following apply to this document.
3.1
Insulation monitoring insulationmonitoring
Monitor and measure the insulation condition of busbars and branches to ground in low voltage AC and DC power supply systems.
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