输电线路带间隙氧化锌避雷器状态巡检系统开发

Development of State Inspection System for Zinc Oxide Arrester in Transmission Line

带间隙氧化锌避雷器是电力系统过电压主要保护设备,其正常运行时氧化锌几乎不受工频电压的影响,且不易老化。但是在实际运行中,带间隙氧化锌避雷器仍出现老化受潮现象。针对目前带间隙氧化锌避雷器尚无有效监测方法的情况,开发了输电线路避雷器巡检系统。该系统主要包括现场单元-智能传感器、手持式巡检仪、后台数据库及后台数据分析系统。经试运行监测,该系统运行良好,这对于带间隙氧化锌避雷器的安全运行乃至电网安全都具有现实意义和工程实用价值。

The zinc oxide arrester with gap is the main protection device for the overvoltage of the power system.During normal operation,the zinc oxide valve is almost unaffected by the power frequency voltage,and the valve plate is not easy to aging.However,in actual operation,the zinc oxide arrester with gap still has aging and moisture.In view of the fact that there is no effective detection method for the current zinc oxide arrester with gap,the state inspection system for the transmission line arrester has been developed.The system mainly includes site unit-intelligent sensor,hand-held patrol instrument,background database and the data analysis system.Through experiments,the system works very well,which has practical engineering significance for the safe operation of the zinc oxide arrester with gap and the safety of the power grid.