文章摘要
基于电流分布系数的母差保护非故障相饱和判别
A METHOD TO IDENTIFY NON-FAULT PHASE SATURATION FOR BUSBAR DIFFERENTIAL PROTECTION
投稿时间:2019-07-27  修订日期:2019-11-30
DOI:
中文关键词: 母差保护  非故障相饱和  电流分布系数  转换性故障
英文关键词: busbar differential protection  non-fault phase saturation  current distribution coefficient  transferring fault.
基金项目:
作者单位E-mail
王风光 南京南瑞继保电气有限公司 wangfg@nrec.com 
李力 南京南瑞继保电气有限公司  
吕航 南京南瑞继保电气有限公司  
顾乔根 南京南瑞继保电气有限公司  
丁杰 南京南瑞继保电气有限公司  
龚啸 南京南瑞继保电气有限公司  
摘要点击次数: 161
全文下载次数: 103
中文摘要:
      当发生母线区外故障时,由于故障支路非故障相饱和所产生的突变电流可能导致母差保护误动。根据非故障相突变电流的产生机理及特点,本文提出一种通过电流分布系数识别故障支路非故障饱和的方法。本文对该方法进行了详细介绍,分析了该方法的适应性,并介绍了动模实验结果。该方法不需要引入故障相电流制动因子,所以在快速识别非故障相饱和的同时不会降低母差保护的灵敏性及速动性,发生转换性故障时母差保护依然可以快速动作。
英文摘要:
      Busbar differential protection may operate wrongly because of the abrupt current of the non-fault phase of the fault feeder when external fault occurs. According to the generation mechanism and characteristics of the non-fault phase abrupt current, this paper proposes a method to identify the non-fault phase saturation by the current distribution coefficient. This paper introduces the method in detail, analyzes the adaptability of the method, and introduces the test results of RTDS. This method does not need to add the fault phase current braking factor, so it can quickly identify the non-fault phase saturation without reducing the sensitivity and rapidity of the busbar differential protection, busbar differential protection can still operate quickly when transferring fault occurs.
查看全文   查看/发表评论  下载PDF阅读器
关闭