同杆平行双回线的故障测距综述

输电线路发生故障时，快速准确地确定故障地点并排除故障，对及时恢复供电，提高供电可靠性具有重要意义。该文总结了平行双回线故障测距算法的研究状况，根据测距所需信息来源、测距原理及采用线路模型的不同对平行双回线的测距算法进行了分类，并详细介绍了六序故障分量法的基本原理，最后结合近几年的研究现状对双回线故障测距算法的发展趋势进行了展望。

A Survey of Fault Location for Double-Circuit Parallel Transmission Lines on the Same Pole

When there are faults in transmission lines, it is important for timely restoring of power supply and increasing its reliability to determine the fault location quickly and accurately and remove it. This paper summarizes the research situation on fault location algorithms of double-circuit transmission lines on the same pole. According to the different information source, fault location principle and adopted transmission line model, the fault location algorithms of double-circuit transmission lines on the same pole are classified. Furthermore, the basic principle of six-sequence fault components method is introduced in detail. The prospects of fault location algorithms for double-circuit transmission lines on the same pole are described.