基于电压分布和判别分析的电网故障在线定位  

Method for on-line fault locating based on voltage distribution and discriminant analysis

作　　者：赵美琳[1] 吕飞鹏[1] 张新峰[1] 徐小超[2] 张向亮[1] 肖飞[1] 

机构地区：[1]四川大学电气信息学院,四川成都610065 [2]云南电网公司元谋供电有限公司,云南元谋651300

出　　处：《华北电力大学学报（自然科学版）》2012年第6期18-22,共5页Journal of North China Electric Power University：Natural Science Edition

摘　　要：提出了一种针对广域后备保护的电网故障在线定位新方法。首先根据故障电压分布快速完成故障的一次定位,再利用广域测量系统(Wide Area Measurement System,WAMS)提供的实时电压、电流等电网电气量信息,运用判别分析中的马氏距离判别原理,最终确定出故障元件。仿真结果表明,该算法可以准确地定位出故障元件,满足在线定位的要求,为广域后备保护的实现提供了前提。A novel algorithm is proposed to solve the on-line fault locating problem for wide area back-up protection. Firstly, based on fauh voltage distribution, the first location is accomplished quickly. Then by utilizing the real-time information of voltage and current provided by the wide area measurement system （WAMS） and combining Mahalano- bis distance analysis algorithm, the faulty element is located ultimately, simulation results shows that the algorithm is precise and fast, which meets the requirement of on-line locating and can provide precondition for wide area back-up protection.

关 键 词：在线定位 电压分布 判别分析 广域测量系统 

分 类 号：TM77[电气工程—电力系统及自动化]