摘要
由于现有的双端故障测距方法不可以直接应用到三端输电系统中,本文提出了一种基于PMU的三端高压输电系统故障测距的方法。该方法充分利用PMU测量数据的同步性,采用分布参数线路模型,在故障发生后首先对故障区域进行判断,利用戴维南定理将非故障支路进行等效合并,将三端输电系统简化为双端输电系统,继而可以利用双端故障定位原理进行故障定位。通过MATLAB软件仿真表明了该算法的正确性。
Existing two-terminal t;ault location method can not be directly applied to the three-terminal transmission lines. This paper presents a new PMU-based fault location algorithm for three-terminal transmission lines.The development of the algorithm takes advantage of PMU measurement data synchronization, uses distributed parameter line model, first of all judges the fault zone after a failure, uses Thevenin＇s Theorem to merge the non-slip fault, so the three-terminal system is simplified the double-ended system. Then the double-ended fault location principle of fault location can be used. Through MATLAB simulation shows the correctness of the algorithm.
出处
《自动化技术与应用》
2013年第2期57-60,67,共5页
Techniques of Automation and Applications
关键词
PMU
三端输电线路
正序分量
戴维南定理
PMU
three-terminal transmission lines
positive sequence component
thevenin theorem
