电缆故障测距的模型仿真与系统设计  

Design and Simulation of Cable Fault Location System

作　　者：金增杰 卫永琴 张琦 王潇龙 JIN Zengjie;WEI Yongqin;ZHANG Qi;WANG Xiaolong(School of Electrical and Automation Engineering,Shandong University of Science and Technology,Qingdao 266590,Shandong,China;Maintenance Company of State Grid Shandong Electric Power Company,Jinan 272000,Shandong,China)

机构地区：[1]山东科技大学电气与自动化工程学院,山东青岛266590 [2]国家电网山东省电力公司检修公司,山东济南272000

出　　处：《电气传动》2021年第14期68-72,共5页Electric Drive

基　　金：国家自然科学基金(61471224)。

摘　　要：针对电缆发生故障后难以准确定位的问题,提出了一种多频相位法的故障测距方法。构建了电缆故障行波分离的等效模型,在此基础上对短路和断路两种故障情况推导出不同的测距公式。在软件Matlab中建立电缆故障模型,通过选择不同的故障距离和频率分别对短路和断路故障进行仿真分析,仿真结果证实了此测距方法的准确性。最后在理论研究和仿真分析的基础上,设计了一套电缆故障测距系统,实验结果进一步验证了此方法的可行性和优越性。Aiming at the problem of cable fault location,a multi-frequency phase method was proposed.An equivalent model for traveling wave separation of cable faults was constructed and different ranging formulas were derived for the short-circuit and open-circuit fault conditions.A cable fault model was established in the software Matlab.Short-circuit and open-circuit faults were simulated by selecting different fault distances and frequencies.The simulation results confirmed the accuracy of this method.Finally,based on theoretical research and simulation verification,a cable fault location system was designed.The experimental results further verify the feasibility and superiority of this method.

关 键 词：多频 相位法 电缆故障 测距 

分 类 号：TM755[电气工程—电力系统及自动化]