高压XLPE电缆线路局部放电测试系统应用研究

文章将介绍一种高压电缆局部放电测试系统（PDCheck）以及该系统在北京地区的应用。Techimp公司的PDCheck实现了放电脉冲的分离识别诊断技术,通过对信号进行高速宽带采样获取信号完整的时域波形,针对不同放电及噪声间的差异提取多种信号特征,从而将不同的放电分离开来,对每一类放电进行甄别,推断出受捡设备可能存在的绝缘问题,经实验室测试和现场使用,效果良好。

Application of PD Measurement System for High Voltage XLPE Cable

The paper introduced a kind of Partial discharge(PD)measuring system for high voltage cables and its application in Beijing. The PDCheck developed by Techimp Co.realized the separation and identification of discharge pulse.Whole pulses was taken in using a high-speed broad band sampling system at first,then discharge pulses were separated from noises by character which was calculated from pulses,and discharge types were ascertained at last.Tests in lab and fieldwork show that this system can effectively and accurately detect insulation flaws in the electric devices.