各种输电线路模型对基于小波变换的故障定位方法的影响

E. E. Ngu, R. Montano, K. Ramar, V. Cooray
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引用次数: 2

摘要

小波变换在输电线路故障定位中的应用已经广为人知。本文对不同输电线路型号的电弧、开路、短路和高阻抗故障的定位方法进行了比较研究。研究了不同土壤电阻率的有损性地基条件对频率相关线模型的影响。利用ATP/EMTP软件对400 kv输变电系统进行了仿真。在系统两端测量的电流信号被用于研究。利用MATLAB中的小波工具箱获取小波变换系数。期望了解各种传输线模型的行为将有助于研究人员选择合适的传输线模型进行研究。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Influence of various transmission line models on the wavelet transformation based fault location methods
Application of Wavelet Transform to locate the fault in a transmission line is well known. In this paper a comparative study of locating different kind of faults, namely arc, open circuit, short circuit and high impedance faults on different transmission line models is presented. Effect of lossy ground condition with various soil resistivities on frequency dependent line models is also investigated. Simulation on a 400-kV power transmission system is carried out using ATP/EMTP. The current signals measured at both ends of system are utilized for the study. Wavelet Toolbox in MATLAB is used for obtaining Wavelet Transform coefficients. It is expected that understanding the behavior of the various transmission line models will help researchers to choose a right one for their study.
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