光电式±800kV直流绝缘子泄漏电流在线监测系统研究  

Research on the Fiber-optic On-line Monitoring System for the Leakage Current of ±800 kV UHV DC Insulator

作　　者：赵涛[1] 王小岩 王亮[1] 刘云鹏[1] 

机构地区：[1]华北电力大学河北省输变电设备安全防御重点实验室,河北保定071003 [2]威海供电公司,山东威海264200

出　　处：《电力科学与工程》2012年第12期63-67,共5页Electric Power Science and Engineering

基　　金：国家自然科学基金资助项目(51277073)

摘　　要：介绍了一种基于虚拟仪器的光电式±800kV特高压直流绝缘子泄漏电流在线监测系统。该系统采用光供电与光传输技术,能高精度的采集微安级别的直流绝缘子泄漏电流,同时利用继电器卡实现了系统无人值守时故障自恢复。基于LabVIEW-SQL Server实现的监测系统提供了直观的人机交互界面以及声光二级报警。在南方电网特高压直流试验基地的长期监测运行表明,此系统能够精确的测量特高压直流绝缘子泄漏电流。This paper introduces an fiber-optic online monitoring system for the leakage current of ±800 kV UHVDC insulator. Since the leakage current of UHVDC insulator was as small as microamps level that was vulnerable to outside interference, we developed the fiber-optic transmission system to overcome the external electromagnetic interference. The system can provide visual user user interface and sound and light alarm based on LabVIEW and SQL-Server. Through the long-term online monitoring of various types of insulators at the UHVDC experimental base in Kunming, it has been proved that this system can operate stably and reflect the contamination state of insulator.

关 键 词：泄漏电流 在线监测 特高压直流绝缘子 ±800 kV LabVIEW 

分 类 号：TM723[电气工程—电力系统及自动化]