输电线路行波测距方法研究  

Research on Traveling-wave Ranging Method of Transmission Lines

作　　者：梁红敏 朱浩钰 王明会 彭丹阳 LIANG Hongmin;ZHU Haoyu;WANG Minghui;PENG Danyang(North China University of Water Resources and Elctric Power,Zhengzhou 450046,China;Heze Yellow River Bureau Water Supply Bureau,Heze 274000,China;State Grid Henan Electric Power Company Zhengzhou Power Supply Company,Zhengzhou 450000,China)

机构地区：[1]华北水利水电大学,河南郑州450046 [2]菏泽黄河河务局供水局,山东菏泽274000 [3]国网河南省电力公司郑州供电公司,河南郑州450000

出　　处：《电工技术》2023年第3期129-131,共3页Electric Engineering

摘　　要：针对输电线路行波测距存在的行波等效波速随故障距离变化而变化的问题,利用牛顿插值算法对波速逐次进行补偿。将每次补偿后的波速代入考虑波速变化的双端行波测距公式,当测距结果的收敛精度满足设定收敛条件后算法循环终止,得到逐步逼近真实故障距离的测距结果。仿真结果表明,该测距方法精度高,具有一定的抗过渡电阻能力。Aiming at the problem that the traveling wave equivalent wave speed of the transmission line changes with the fault distance,the wave speed is compensated successively by Newtonian interpolation algorithm.The wave velocity after each compensation is substituted into the double ended traveling wave ranging formula that takes into account the change of wave speed.When the convergence accuracy of the ranging results meets the set convergence conditions,the algorithm terminates the cycle,and the ranging results gradually approximate the true fault dis tance are obtained.The simulation results show that the ranging method has high accuracy and certain resistance to transition resistance.

关 键 词：行波测距 行波等效波速 故障距离 牛顿插值算法 

分 类 号：TM751[电气工程—电力系统及自动化]