电力系统自动化2011，Vol.35Issue(14)：98-102,111,6.
基于参数识别原理的串补线路距离保护
Distance Protection for Series Compensated Lines Based on Parameter Identification Principle
摘要
Abstract
Based on transient models of series compensated lines and parameter identification principle,a new distance protection method for series compensated lines is proposed.The protection uses transient fault information to calculates the inductance of series compensated lines which can correctly reflect the distance from fault point to relay location,so it can overcome the overreach problem for external faults.Moreover,the fault point relative to series capacitor compensating location is turned to an unknown evaluated variable.The unity of protection algorithm is implemented when faults occur in front of series capacitors or behind them,so there is no need to identify the fault location relative to series capacitors in advance and no need to cooperate with traditional protection.Since only the transient data before mental oxide varistors（MOV） conduction is used for identification process,MOV＇s nonlinear characteristic needn＇t to be considered in this method.Because only single terminal electric quantities are used,the protection is easy to be realized without using communication channels.The simulating results show the validity and adaptability of the protection principle proposed.关键词
串联补偿线路/参数识别/距离保护/金属氧化物压敏电阻/暂态信息/区外超越Key words
series compensated lines/parameter identification/distance protection/mental oxide varistors（MOV）/transient information/overreach for external faults分类
信息技术与安全科学引用本文复制引用
王育学,尹项根,张哲,李振兴,何志勤,孔祥平..基于参数识别原理的串补线路距离保护[J].电力系统自动化,2011,35(14):98-102,111,6.基金项目
国家自然科学基金资助项目 （）
国家高技术研究发展计划（863计划）资助项目 （）
