光电技术在避雷器泄漏电流在线监测中的应用分析

Application Analysis of Optoelectronic Technology in Online Monitoring of Leakage Current of Lightning Arresters

避雷器作为配网防雷的主要手段,在配电线路和配电变压器上广泛应用。分析避雷器发生故障的特点和常见的故障状态,基于目前避雷器泄漏电流的监测,分别阐述泄漏电流测量、数据采集与传输、数据分析与处理、异常警报与诊断以及远程监控等方面内容,并细致分析光电隔离技术在避雷器泄漏电流的监测的应用原理和应用技术内容。应用光电耦合器将电流变化量进行光电转换与计算机处理,并显示与报警,可以保证避雷器安全平稳运行。

As the main means of lightning protection in distribution networks,lightning arrester is widely used in distribution lines and distribution transformers.The characteristics of lightning arrester failure and common fault states are analyzed,and based on the current monitoring of lightning arrester leakage current,the aspects of leakage current measurement,data acquisition and transmission,data analysis and processing,abnormality alarm and diagnosis as well as remote monitoring are elaborated,and the application principle and application technology content of optoelectronic isolation technology in the monitoring of lightning arrester leakage current are meticulously analyzed.The application of photoelectric coupler to photoelectric conversion and computer processing of current changes,and display and alarm,can ensure the safe and smooth operation of lightning arrester.