摘要
对目前电力电缆绝缘在线监测方法中的介损法、直流成分法、局部放电法、温度法的原理以及局限性进行介绍。重点分析利用"S"信号注入思想实现电缆绝缘在线监测以及实现绝缘老化区域锁定的原理。对该方法的优缺点进行分析,指出要实现应用上的可行关于电流互感器的安装方式、安装位置仍需进一步研究。最后提出电缆绝缘在线监测系统应满足易采集、精度高、抗干扰强、适用范围广以及故障定位精确的要求。
We briefly introduced the principles and defects of the current on-line insulation monitoring methods of power cable. Emphatically analyzed how to use the thought of signal injection to implement the on-line insulation monitoring, and how to lock the insulation aging area. We pointed out the advantages of signal injection method and put forward two problems which should be solved before it turn to a practical application. The monitoring system should have the characteristics of easy acquisition, high precision, strong anti-jamming, wide usage, and high precision for fault location.
出处
《中国西部科技》
2013年第8期55-56,84,共3页
Science and Technology of West China
