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Delivery: <= 6 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 42287-2022: High-voltage test techniques - Measurement of partial discharges by electromagnetic and acoustic methods Status: Valid
Basic dataStandard ID: GB/T 42287-2022 (GB/T42287-2022)Description (Translated English): High-voltage test techniques - Measurement of partial discharges by electromagnetic and acoustic methods Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: K40 Classification of International Standard: 19.080 Word Count Estimation: 30,324 Date of Issue: 2022-12-30 Date of Implementation: 2023-07-01 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 42287-2022: High-voltage test techniques - Measurement of partial discharges by electromagnetic and acoustic methods---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 19.080 CCSK40 National Standards of People's Republic of China Electromagnetic and Acoustic Measurement of High Voltage Test Technology Partial Discharge (IEC TS62478.2016, IDT) Posted on 2022-12-30 2023-07-01 implementation State Administration for Market Regulation Released by the National Standardization Management Committee table of contentsPreface III Introduction IV 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Electromagnetic measurement of partial discharge 3 4.1 Physical background 3 4.2 Transmission 3 4.3 Measurement system 3 5 Acoustic measurement of partial discharge 7 5.1 Physical background 7 5.2 Transmission 7 5.3 Measurement system 7 6 Partial discharge source location 9 6.1 Overview 9 6.2 Electromagnetic method 9 6.3 Acoustic method 9 6.4 Combined acoustic-electromagnetic method9 Appendix A (Informative) Advantages and Disadvantages of Electromagnetic Measurement 11 A.1 Advantages 11 A.2 Disadvantages 11 Appendix B (Informative) Advantages and Disadvantages of Acoustic Measurements 12 B.1 Advantages12 B.2 Disadvantages 12 Appendix C (informative) specific application 13 C.1 Gas-insulated metal-enclosed switchgear (GIS) 13 C.2 UHF and VHF detection method 13 C.3 Acoustic method14 C.4 Sensitivity check of GIS electromagnetic and acoustic measurements14 C.5 Rotating electrical machines 17 C.6 Transformers 18 C.7 Cables/Accessories 19 Reference 22 Figure 1 Classification of instrument signal processing 5 Figure 2 Overview of electromagnetic measurements of partial discharge6 Figure 3 Overview of performance and sensitivity checks for different devices6 Figure C.1 Defect localization by travel time measurement16 Figure C.2 Example of electromagnetic and acoustic detection of partial discharge in oil/paper insulated transformers 18 Figure C.3 Classical propagation time partial discharge localization of transformers/reactors based on combined acoustic-electrical signals 19forewordThis 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. This document is equivalent to IEC TS62478.2016 "High Voltage Test Technology Electromagnetic and Acoustic Method for Partial Discharge Measurement", file type The technical specification of IEC is adjusted to the national standard of our country. Please note that some contents of this document may refer to patents. The issuing agency of this document assumes no responsibility for identifying patents. This document is proposed by China Electrical Equipment Industry Association. This document is under the jurisdiction of the National High Voltage Test Technology and Insulation Coordination Standardization Technical Committee (SAC/TC163). This document is drafted by. East China Electric Power Test Research Institute Co., Ltd., Xi'an High Voltage Apparatus Research Institute Co., Ltd., Xi'an Jiaotong University Science, China Electric Power Research Institute Co., Ltd., State Grid Shaanxi Electric Power Co., Ltd. Electric Power Research Institute, State Grid Hebei Electric Power Co., Ltd. Electric Power Research Institute, State Grid Henan Electric Power Company Electric Power Research Institute, State Grid Sichuan Electric Power Company Electric Power Research Institute, Ningbo Vocational and Technical College, State Grid Ningxia Electric Power Co., Ltd. Electric Power Research Institute, China Institute of Metrology, State Grid Economic and Technological Research Institute have Co., Ltd., China Southern Power Grid Research Institute Co., Ltd., State Grid Tibet Electric Power Co., Ltd. Electric Power Research Institute, State Grid Hubei Electric Power Co., Ltd. Marketing Service Center (Metering Center), State Grid Sichuan Electric Power Company Aba Power Supply Company, Xinjiang TBEA Automatic Control Equipment Co., Ltd. Division, Siyuan Electric Co., Ltd., State Grid Zhejiang Electric Power Co., Ltd. Electric Power Research Institute, Shanghai Jiaotong University, China Southern Power Grid Technology Co., Ltd., State Grid Smart Grid Research Institute Co., Ltd., Wuhan University, Xi'an Xidian Lightning Arrester Co., Ltd., Zhongke (Shenzhen Shenzhen) Energy Internet of Things Co., Ltd., Xi'an Xidian Switch Electric Co., Ltd., Inner Mongolia Electric Power (Group) Co., Ltd. Inner Mongolia Electric Power Division Research Institute Branch, Beijing Jiaotong University, Pinggao Group Co., Ltd., Guangxi Power Grid Co., Ltd. Electric Power Research Institute, Shijiazhuang Branch Lin Electric Equipment Co., Ltd., Gansu Electric Apparatus Research Institute, China Yangtze Power Co., Ltd., Shandong University, Xi'an Maorong Electric Power Equipment Co., Ltd., North China Electric Power University, Electric Power Research Institute of Guangdong Power Grid Co., Ltd., Electric Power Scientific Research of State Grid Chongqing Electric Power Company Institute, State Grid Liaoning Electric Power Co., Ltd. Electric Power Research Institute, Hangzhou Kelin Electric Co., Ltd., Shandong Taikai Complete Electric Co., Ltd. Division, Xiamen Smarts Intelligent Electric Co., Ltd., State Grid Anhui Electric Power Co., Ltd. Electric Power Research Institute, Yunnan Power Grid Co., Ltd. Electric Power Research Institute, State Grid Shanghai Electric Power Company Jinshan Power Supply Company, Jiangsu Rugao High Voltage Electric Appliance Co., Ltd. The main drafters of this document. Si Wenrong, Zhang Xiaoyong, Li Junhao, Fu Chenzhao, Lei Min, Li Yanming, Wang Chunjie, Zhou Wei, Li Qiang, Zhao Xuefeng, Gao Shuguo, Wang Ting, Wang Tian, Su Chunqiang, Liu Hongliang, Zhang Chenmeng, Shen Jianwei, Wang Jiansheng, Wu Xutao, Liu Na, Du Shangan, Pu Lu, Hu Liangrong, Gao Chao, Wang Dafei, Guo Yue, Wang Sike, Wang Daxing, Wei Peng, Xu Tiejun, Chang Jiasen, Zhao Lin, Wang Hui, Lu Qifu, Ju Dengfeng, Guan Weimin, Han Shuai, He Jumou, Wang Wei, Wang Jianwen, Wang Ling, Zhang Wei, Che Chuanqiang, Sun Jixing, Lin Lin, Rao Xiajin, Duan Hongmin, Yan Qi, Wu Zhiguo, Li Qingquan, Wang Guoli, Yuan Peng, Li Teng, Ma Guoming, Li Xingwang, Wang Jiayi, Xie Cheng, Li Yong, Jin Xin, Xie Wei, Zheng Weixia, Shen Wei, Sang Zhongqing, Zhu Taiyun, Peng Jing, Yang Yang, Zhang Yu, Sun Jingjing, Xie Dong, Fan Xingcai.IntroductionPartial discharges can generate electromagnetic and acoustic signals, radiate light and cause chemical decomposition of insulating materials; these physical and chemical effects can be It can be detected by various diagnostic methods and corresponding sensing elements (sensors). In addition to IEC 60270 describing so-called conventional electrical inspection Partial discharge can also be measured using unconventional methods (see Appendix A, Appendix B and Appendix C). This document gives recommendations for the special requirements of the application of these two types of unconventional detection methods, electromagnetic and acoustic, and is the basis for measurement in this direction. Fundamentals of partial discharge. Electromagnetic and Acoustic Measurement of High Voltage Test Technology Partial Discharge1 ScopeThis document describes electromagnetic (HF/VHF/UHF) and acoustic measurement methods for partial discharges in the insulation of electrical equipment. This document is applicable to partial discharge sensors of different application scenarios, different frequency ranges and different sensitivities, as well as the corresponding positioning, measuring measurement system calibration or sensitivity check.2 Normative referencesThe contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, dated references For documents, 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/T 20833.1 Winding insulation of rotating electrical machines Part 1.Off-line partial discharge measurement (GB/T 20833.1-2021, IEC 60034-27-1.2017, IDT) measurements) Note. GB/T 7354-2018 High Voltage Test Technology Partial Discharge Measurement (IEC 60270.2000, MOD)3 Terms and DefinitionsThe following terms and definitions apply to this document. The IEC and ISO terminology databases can be accessed at. 3.1 Partial discharge partial discharge; PD Insulation between conductors is only partially bridged by electrical discharge. This discharge may or may not occur near the conductor. 3.1.1 Extremely fast current pulses generated by partial discharges whose rise time and pulse width depend on the type of discharge, defect type, geometry and gas body pressure. 3.1.2 A phenomenon in which a partial discharge current pulse results in a high-frequency transient electromagnetic wave. Note. The electromagnetic waves generated by partial discharge propagate through the dielectric material surrounding the source of partial discharge, and these signals can be detected by various antennas or transducers (sensors). detected. 3.1.3 Acoustic effects of partial discharge acoustic effects of PD A phenomenon in which a partial discharge current pulse causes a transient sound wave in the passage of superheated gas (similar to a lightning bolt). ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 42287-2022_English be delivered?Answer: Upon your order, we will start to translate GB/T 42287-2022_English as soon as possible, and keep you informed of the progress. The lead time is typically 4 ~ 6 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB/T 42287-2022_English with my colleagues?Answer: Yes. 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