摘要
高压输电线路绝缘子使电位不同的导体在机械上相互连接,而在电气上则使之绝缘,要求其能够长期在正常工作电压以及内、外部过电压情况下能够安全可靠运行。本文介绍了传统高压绝缘子的检测方法以及提出了高压输电线路绝缘子在线监测系统的基本组成,阐述了高压输电线路泄漏电流的基本特点以及泄漏电流的提取、采集和处理方法,给出了对电流传感器频带拓宽的具体方法,提出了在某特定时间内对高压输电网绝缘子泄漏电流脉冲个数和平均电流峰值进行测量的方法。试验结果表明:文章提出的方法可以满足电力工业现场对高压输电线路绝缘子泄漏电流的实时监测。
High voltage transmission line insulator make potential different conductor in mechanical interconnection, and make them electrically insulate, we require them operate in the condition of normal working voltage, internal and external overvoltage cases safely and reliably. This paper introduced the traditional high voltage insulator leakage current test methods and the basic composition of on-line monitoring system of high voltage power lines, and also described the main characteristics of high voltage power lines leakage current and its extraction, collection and processing method, what＇s more, studied the method to broaden the leakage current sensor＇s band, then proposed the method of monitoring the high voltage power lines insulator leakage current pulse and average leak current peak in a specific period of time. The article puts forward method can meet the electric power industry for high voltage transmission line insulator leakage current real-time monitoring.
出处
《电气技术》
2013年第3期26-30,共5页
Electrical Engineering
基金
国家自然科学基金(50977003)资助
关键词
绝缘子染污
污闪
输电网
绝缘子泄漏电流
在线监测
insulator contamination
high voltage power lines
insulator leakage current
online monitoring
