架空配电线路行波依频传输特性分析  

Analysis of frequency-dependent transmission characteristics of traveling wave in overhead distribution line

作　　者：吴娜 杨征贤 樊淑娴 公茂法 Wu Na;Yang Zhengxian;Fan Shuxian;Gong Maofa(School of Electrical Engineering and Automation,Shandong University of Science and Technology,Qingdao 266590,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

出　　处：《电测与仪表》2021年第1期165-171,共7页Electrical Measurement & Instrumentation

基　　金：国家重点研发计划项目(2017YFB0902820);山东省高等学校科技计划项目(J17KA074)。

摘　　要：配电线路行波传输特性分析是行波在配电网故障检测与保护中应用的理论基础。针对配电网中的高频行波信号,文中分析了在考虑集肤效应后的架空配电线路分布参数,讨论了不受频率影响的相模变换方法。利用数值计算的方法,得到了参数传输依频曲线,总结了依频传输规律。针对配电线路分支众多、距离较短的特点,对配电线路中行波衰减特性进行了分析。利用ATP-EMTP仿真验证了理论分析结果的正确性。The analysis of traveling wave transmission characteristics of distribution line is the theoretical basis of traveling wave application in distribution network fault detection and protection.For the high frequency traveling wave signals in distribution network,the distribution parameters of overhead distribution lines considering skin effect are analyzed,and the phase mode transformation method which is not affected by frequency is discussed.The frequency-dependent curve of parameter transmission is obtained by means of numerical calculation,and the law of frequency-dependent transmission is summarized.In view of the characteristics of distribution lines with many branches and short distance,the attenuation characteristics of traveling wave in distribution lines are analyzed.The correctness of the theoretical analysis results is verified by ATP-EMTP simulation.

关 键 词：架空配电线路 频变参数 依频特性 模量传输 行波衰减 

分 类 号：TM933[电气工程—电力电子与电力传动]