摘要
电网发生故障冲击、误操作或遭雷击时会产生暂态行波向整个电网传播,导致电网的振荡与冲击。为了提高电网运行的可靠性及稳定性,文章针对行波的原理与性能进行研究,重点分析了行波故障定位与行波测距技术。针对现有的单端和双端测距原理,提出基于时间中点的混合双端测距技术进行故障定位,并通过两端的电子式电流互感器进行行波波头的识别与采集,从而达到现在大电网及混合电网的可靠运行要求。
The impact power grid failure,wrong operation or lightning strike would produce transient travelling wave spread to the entire power grid,cause of oscillation and shock.In order to improve the reliability and stability of power grid operation,in this paper,the principle and performance of traveling wave are studied,especially the traveling wave fault location and traveling wave ranging technology.In view of the existing single side and double side ranging principle,based on the time point of mixed double ended,fault location ranging technology is put forward,and through the electronic current transformer at the ends of the line for the identification and selection of Bob,the reliable operation of power grid and hybrid grid is achieved.
作者
付俊雄
聂德宇
李晓敏
FU Jun-xiong NIE De-yu LI Xiao-min(State Grid Hubei Electric Power Maintenance Company, Yichang 443002, China College of Electrical Engineering ＆ New Energy, China Three Gorges University, Yichang 443002, China)
出处
《通信电源技术》
2017年第4期68-69,共2页
Telecom Power Technology
关键词
行波
故障定位
时间中点
混合双端测距
电流互感器
traveling wave
fault location time
midpoint hybrid double terminal ranging
current transformer
