日本配电网中性点接地方式选取原则及接地故障处理方法  

Selection Principle of Neural Grounding Mode of Distribution Power Network and Its Fault Processing Technology in Japan

作　　者：田野[1,2] 陈维江[3] 张薛鸿[3] 吕军[3] 宁昕[3] 隋玉秋[1] 张小辉[1] 刘日亮[3] 赵义松[1] TIAN Ye CHEN Weijiang ZHANG Xuehong LUJun NING Xin SUI Yuqiu ZHANG Xiaohui LIU Riliang ZHAO Yisong(Electric Power Research Institute o f State Grid Liaoning Electric Power Co., Ltd.,Shenyang 110 0 0 6 , China State Grid Corporation o f China, Beijing 1 0 0 0 3 1 , China China Electric Power Research Institute, Beijing1 0 0 1 9 2 , China)

机构地区：[1]国网辽宁省电力有限公司电力科学研究院,辽宁沈阳110006 [2]中国电力科学研究院,北京100192 [3]国家电网公司,北京100031

出　　处：《供用电》2017年第5期14-20,共7页Distribution & Utilization

摘　　要：为了解国外先进配电网的建设与运行经验,针对日本(特别是东京电力公司)的配电网网架结构、中性点接地方式及其选取原则,以及常用故障处理方法等开展了调查研究。由调研结果可知:日本配电网网架结构主要采用"多分段多联络"的方式,确保了线路的N-1转供能力,提高了供电可靠性;日本6.6k V配电网中性点主要采用不接地方式,而22(33)k V系统的中性点主要采用经电阻接地方式,电阻值的选取因各电力公司需求的不同而各异,其中参数的最优化选取原则比较完善,具有一定参考价值;集成了多种继电保护功能的远程控制终端技术得到了发展与应用,可以有效实现故障区域的就地化隔离,与传统的重合器方式相比,确保了同一线路非故障区域的供电可靠性。In order to master the construction and operation experience of foreign advanced distribution power network, the basic situation of distribution network of Japan （in particular Tokyo electric power company）, the neural grounding mode, its selection principle and fault handing methods are investigated. The typical structure of distribution network in Japan is multi- divided multi-interconnected system; the neutral grounding point o f 6.6kV distribution network mainly adopt isolated system, and the 22 （33） kV network mainly adopt resistance earthed system, the selection of resistance varies due to the demand of different power companies, and the optimum parameters selection method is comparatively perfect; the integration o f a variety protection function of remote terminal unit is developed and applied. It can effectively achieve the fault area isolation. Compared with traditional reclosing mode, the new method can ensxare the power supply reliability of non-fault area on the same line.

关 键 词：日本配电网 中性点接地方式 接地方式选取原则 单相接地故障 故障处理方法 

分 类 号：TM73[电气工程—电力系统及自动化]