Analysis of Overvoltage Caused by Intermittent Earth Fault and Its Suppression Method

摘要：

　　Intermittent earth faults occur frequently in urban distribution networks, causing overvoltage in the whole system. This paper first presents the distribution characteristics of transient overvoltage caused by intermittent earth faults. Overvoltage level at the end of a sound line turns to be higher than that of the faulted line. In resonant grounding system with Petersen coil based on thyristor controlled reactor (TCR), overvoltage appears to be more severe due to response delay of compensation. Therefore, the influence on overvoltage level of Petersen coil compensation is analyzed, based on which, an overvoltage suppression method is proposed.

关键词： Intermittent earth faults overvoltage Petersen coil suppression method

作者: WU Zhengrong CAI Yingqian TIAN Bing XU Aidong GUO Xiaobin WANG Gang

作者单位: Electric Power Research Institute of CSG,Guangzhou 510080,China South China University of Technology,Guangzhou 510640,China

会议类型: 国际会议

会议名称: 2016中国国际供电会议(CICED2016)

会议地点: 西安

会议语种:英文

页码: 1-5

在线出版日期: 2016-09-01（万方平台首次上网日期，不代表论文的发表时间）