10kV交联聚乙烯电缆绝缘老化超低频介损试验的研究  

Study on ultra-low frequency dielectric loss detection of 10kV cross-linked polyethylene aged cable

作　　者：李宗辉 陈林艳 陈艺伟 Li Zonghui;Chen Linyan;Chen Yiwei(State Grid Fujian Electric Power Company Quanzhou Power Supply Company,Quanzhou,Fujian 362000)

机构地区：[1]国网福建省电力有限公司泉州供电公司,福建泉州362000

出　　处：《电气技术》2020年第10期83-87,共5页Electrical Engineering

摘　　要：本文主要介绍超低频介损局放测试技术在10kV交联聚乙烯电缆的应用。根据国际电工委员会IEEE 400.2—2013屏蔽电缆超低频(小于1Hz)现场测试指南,对测试数据进行了分析,并对泉州地区19条老旧电缆进行超低频介损局放试验。结果显示,19个中的6个电缆处于关注或者检修状态,部分电缆中发现水树枝。这些电缆如果继续投运,将极有可能发生故障导致停电。超低频介损测试可以有效评估交联聚乙烯电缆的绝缘老化状态,进而为配电检修提供指导,有助于提升配电网的安全性和可靠性。This paper mainly introduces the application of ultra-low frequency dielectric loss partial discharge test technology in 10kV XLPE cable.Through the ultra-low frequency dielectric loss partial discharge test of 19 old cables in Quanzhou area.According to IEEE 400.2—2013,the test data are analyzed.The results show that 6 of the 19 cables are in the state of concern or maintenance,and some of the cables are found with water branches.If these cables continue to be put into operation,there is a high probability of failure leading to power failure.Ultra low frequency dielectric loss test can effectively evaluate the insulation aging state of XLPE cable,provide guidance for distribution maintenance,and help to improve the safety and reliability of distribution network.

关 键 词：超低频介损 ccc电缆 水树 配电网 

分 类 号：TM855[电气工程—高电压与绝缘技术]