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《Automation of Electric Power Systems》 2008-01
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Study on Issues of Generator Rotor Earth Fault Protection

CHEN Jun, WANG Guang, YAN Wei, SHEN Quanrong(Nanjing NARI-Relays Electric Co Ltd, Nanjing 211106, China)  
This paper analyzes the influences of shaft voltage absorbing circuit and brush touching resistance on the performance of generator rotor earth fault protection. Some countermeasures and advices are presented. Prolonging period of electric switches and injected square voltage is suggested to eliminate the influence of shaft voltage. It is necessary for rotor earth fault protection to keep good-touching of grounding brush and rotor shaft. Rotor earth fault protection configuration of revolving excitation generator is investigated subsequently, and periodical detecting mode is commended.
【CateGory Index】: TM862
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【References】
Chinese Journal Full-text Database 2 Hits
1 CHEN Jia-sheng1,HU Zhen-liang2,HE Qi-wei1,CHEN Jun1,GUO Zi-gang1(1. Nanjing NARI-RELAYS Co.,Ltd.,Nanjing 211102,China; 2. Longtan Hydropower Development Co.,Ltd,Tian’e 547300,China);Design of Secondary Circuit of Rotor Voltage for Large-scale Generator[J];High Voltage Engineering;2008-11
2 WANG Guang1,WEN Yong-ping2,CHEN Jun1,YAN Wei1(1.Nanjing NARI-Relays Eletric Co.,Ltd.,Nanjing 211102,China;2.CHINA Guangdong Nuclear Wind Power Company,Huhhot 010020,China);Development and Application of Device of Injecting-step-voltage Rotor Ground Protection[J];Jiangsu Electrical Engineering;2009-02
【Citations】
Chinese Journal Full-text Database 1 Hits
1 SHAO Hong-quan (Henan Anfeng Electric Power Co.,Ltd, Zhengzhou 451250, China);Analysis of misoperation of rotor one-point grounding protection[J];Relay;2004-06
【Co-citations】
Chinese Journal Full-text Database 4 Hits
1 ZHANG Bo (Jincheng Power Supply Company of SEPC,Jincheng 048000,China);Study on One-point Grounding Fault for Digtal Generator Protection[J];Electric Power Science and Engineering;2007-02
2 HU Bo, HE Ben-teng(School of Electrical Engineering, Zhejiang University, Hangzhou 310027, China);A study of the digital grounding fault protection scheme for excitation winding of generator[J];Relay;2004-14
3 LUO Zhen1,LI Shu-xing2(1.Handan Power Supply Company,Handan 056035,China;2.Power Plant,Pingmei Group Corporation,Pingdingshan 467000,China);A study of the two-point grounding fault protection scheme for excitation winding of generator[J];Relay;2007-05
4 WANG Guang1,WEN Yong-ping2,CHEN Jun1,YAN Wei1(1.Nanjing NARI-Relays Eletric Co.,Ltd.,Nanjing 211102,China;2.CHINA Guangdong Nuclear Wind Power Company,Huhhot 010020,China);Development and Application of Device of Injecting-step-voltage Rotor Ground Protection[J];Jiangsu Electrical Engineering;2009-02
【Co-references】
Chinese Journal Full-text Database 6 Hits
1 Yang Hongtao(Tiantang Pumped Storage Power Co Ltd, Luotian 438600, China);GENERATOR ROTOR DE-EXCITATION AND OVER-VOLTAGE PROTECTION IN GAOBAZHOU WATER POWER PLANT[J];Dam Observation and Geotechnical Tests;2002-03
2 Xu Xidong Jin Yu Guo Xiaoming (Zhejiang University Hangzhou 310027 China);Study of Rotor Earth-Fault Protection With Switch Sampling Principle[J];Transactions of China Electrotechnical Society;2005-06
3 LI Bin1, TU Li-ming 1,2 , SU Yi2, HUANG Shao-f eng 1,2 (1 North China Electric Power University Sifang Institute,Beijing 102206,Chin a; 2 Beijing Sifang Automation Co.Ltd,Beijing 100085,China);Summarization of One Point Earth-Fault Protection for Generator Rotor[J];Electrical Equipment;2006-11
4 Guo Guangrong(Chongqing Electric Power College, Chongqing 400053, China);THE EARTH-FAULT PROTECTION FOR GENERATOR ROTOR FIELD COIL[J];Automation of Electric Power Systems;2003-20
5 WANG Wen_xin (Ertan Hydraulic Power Station, Panzhihua 617000, China);Discussion and improvement on principle of rotor one point to earth protection for generator in Ertan Power Station[J];RELAY;2000-07
6 SHI Ze-bing~1, MIAO Shi-hong~1, LIU Pei~1, LIU Yan~2(1.College of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China2.School of Software Engineering, Huazhong University of Science and Techology, Wuhan 430074, China);Research & development of a new generator rotor grounding protection device[J];Relay;2005-03
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