摘要
为了解决非全程同杆双回线的故障测距难题,通过解耦变换从非全程同杆双回线中得到T型同序网络,并在此基础上结合过渡阻抗的纯电阻特性,提出一种分支沿线搜索最小相位差值的故障测距方法,并对此测距方法在PSCAD/EMTDC上进行了模拟仿真和验证。
In order to solve the problem of fault location in non-full double circuit transmission lines, based on the T-type same-sequence network obtained from the decoupling transformation of non-full double circuit transmission line, and the pure electric resistance characteristic of the transient impedance, this paper proposes a new fault location method by searching the minimum phase difference along branch lines. In addition, this it also makes simulation and verification of this fault location method in PSCAD/EMTDC.
作者
田斌
方覃绍阳
李志伟
刘波
高鹏
TIAN Bin;FANG Qinshaoyang;LI Zhiwei;LIU Bo;GAO Peng(Enshi Power Supply Company,Enshi 445000,Hubei Province,China)
出处
《电力安全技术》
2019年第5期36-39,共4页
Electric Safety Technology
关键词
故障测距
相位比较
解耦变换
非全程双回线
三端输电系统
fault location
phase comparison
decoupling transformation
non-full double circuit transmission line
three-terminal transmission line
