电缆局放检测振荡波测试系统仿真与开发

Simulation and development of oscillating wave test system for cable PD testing

针对目前用于电力电缆绝缘检测的振荡波测试系统,大部分文献只对其简要的工作原理及其现场测试情况进行了阐述。基于已有的工作基础,分析了系统的组成结构、参数设置及具体工作原理,并在仿真平台中搭建了系统模型,模拟局放发生及检测过程;在仿真的基础上,研究出了一套小型振荡波测试系统,通过人为设置电缆尖端缺陷,对系统进行了试验。从试验结果来看,所研制系统成功模拟了振荡波测试系统的工作过程,并且采集到了局放信号,且局放信号的分布特性符合尖端放电的特性,证明了该系统的有效性。

For recent oscillating wave test system （OWTS） which is used for cable insulation detection ,most literatures mainly focus on its brief working principle and field tests .Based on the existing work ,the structure ,the parameter settings and the detail working principle of OWTS are further analyzed ,meanwhile ,with the Simulink ,OWTS model is built and the process of the partial discharge （PD ） signals occurring and detection is simulated ;On the base of simulation ,a small OWTS is successfully developed ,by setting cable point defects artificially ,the system was tested and the result shows that the developed system successfully simulates the working process of OWTS and collects the PD signals in accordance with point discharge characteristics ,which proves the effectiveness of the developed system .