电力系统及其自动化学报2016，Vol.28Issue(12)：124-129,6.DOI:10.3969/j.issn.1003-8930.2016.12.021
同杆双回输电线路的四点行波故障定位方法
Four-point Traveling Wave Fault Location Scheme for Double Circuit Lines
摘要
Abstract
The ground distributed capacitance and mutual inductance of EHV double circuit lines cannot be ignored, and they have a great impact on the fault location. In this paper,a fault location scheme based on phase comparison and four-point traveling wave fault location is presented for double circuit lines to improve the location accuracy and reliabil⁃ity. At multiple current measurement points,the proposed scheme uses phase comparison to determine the fault sec⁃tion,where the wave front is detected and the wave velocity is solved. The interval between measurement points is set by using section optimization method,and thus a four-point traveling wave fault location scheme is composed of two three-point traveling wave schemes. Simulation results show that the proposed scheme can shorten the distance between two ends,reduce the distortion and attenuation obviously,and achieve an online determination of wave velocity. The proposed scheme can effectively locate the fault when there exists phase comparison misjudgment caused by reverse po⁃larity and measurement fault. The reliability is improved and the accuracy is not affected by line length.关键词
同杆双回线/故障定位/相位比较/行波故障测距/对地分布电容/极性接反Key words
double circuit lines/fault location/phase comparison/traveling wave fault location/ground distributed ca-pacitance/reverse polarity分类
信息技术与安全科学引用本文复制引用
朱永利,范国琛,赵雪松,陈华,熊希..同杆双回输电线路的四点行波故障定位方法[J].电力系统及其自动化学报,2016,28(12):124-129,6.基金项目
中央高校基本科研业务费专项资金资助项目 （）
