基于OPGW光传感的高压绝缘子故障闪络特性分析  

Analysis of High Voltage Insulator Flashover Characteristics Based on OPGW Optical Sensor

作　　者：李涛[1] 李牧[1] 项涛[2] 程远[1] 陈冉[1] 

机构地区：[1]南京南瑞集团公司,国网电力科学研究院武汉南瑞有限责任公司,武汉430074 [2]国网湖北省电力公司武汉供电公司,武汉430013

出　　处：《电瓷避雷器》2017年第4期147-151,共5页Insulators and Surge Arresters

基　　金：2015年国家电网总部科技项目资助(编号:WNJ151-0059)

摘　　要：随着雾霾、沙尘暴等自然环境的不断恶化侵袭,绝缘子污闪成为仅次于雷击的威胁电网安全稳定运行的重要原因。通过OPGW光传感分布式闪络监测技术设备采集到的绝缘子污闪案例数据,对高压绝缘子污闪信号进行了时频特性分析。结果表明:绝缘子污闪信号持续时间一般为50~60 ms,闪络信号频率主要分布在低频段50~1 500 Hz之间,其中工频谐波信号十分突出。验证了OPGW光传感技术可以实现全线路的分布式绝缘子污秽闪络预警监测与故障定位,为绝缘子污闪预警提供了新思路。With the deterioration of the natural environment, such as fog and haze, the pollution flashover of insulators is second most important reason to threat the safe and stable operation of the power grid after the lightning strike. The time frequency characteristic analysis of high voltage insulator pollution flashover signal is carried out by using the insulator polluted data collected by OPGW optical sensor distributed flashover monitoring equipment. The results show that the duration of insulator pollution flashover signal is 50 ms-60 ms, and the frequency of flashover signal is mainly distributed in the low frequency range 50 Hz^1500 Hz, where the power frequency harmonic signal is very prominent. It is verified that the OPGW optical sensing technology can realize the distributed pollution flashover monitoring and fault location of all lines, and provide a new way for the early warning of insulator pollution flashover.

关 键 词：污闪 绝缘子 OPGW 闪络信号分析 

分 类 号：TM216[一般工业技术—材料科学与工程]