局部放电信号在交联聚乙烯电缆的传播特性仿真研究

Simulation Study on Propagation Characteristics of Partial Discharge Signal in XLPE Cable

文章以交联聚乙烯电力电缆为研究对象,对电缆局部放电信号传播特性进行了仿真分析。通过MATLAB产生一个双指数函数脉冲信号来仿真电缆中的局部放电信号,建立相应的仿真电路模型,同时,用ATP-EMTP中的频变电缆模型与MATLAB仿真模型进行对比,分析局部放电信号在电缆中的传输和衰减规律。

Taking the cross-linked polyethylene power cable as the research object,the propagation characteristics of the partial discharge signal of the cable were simulated and analyzed.A double exponential function pulse signal was generated by Matlab to simulate the partial discharge signal in the cable,and the corresponding simulation circuit model was established.At the same time,the frequency-varying cable model in ATP-EMTP was compared with the Matlab simulation model to analyze the transmission and attenuation laws of partial discharge signals in the cable.