【摘要】 简要阐述了变电站电气设备在线监测的一些基本问题,指出在线监测是实现高压设备状态检修的必要手段。介绍了泉州电业局已经装设的变电站电气设备在线监测的基本情况,并在大量在线监测数据积累的基础上,分析了几组异常的电气设备绝缘在线监测数据,分析了一些影响在线监测结果的可能因素:介损测量结果稳定性和重复性较差,受PT角差影响较大;通讯信号采集部分的故障率较高;数据分析不能根据现场的运行方式自动改变;监测系统缺少必要的分析判断功能。更多还原

【Abstract】 The paper summarizes some basic problems of on-line monitoring for electrical equipment in substation and points out that on-line monitoring is a necessary method in state maintenance.The paper introduces the basic situation of on-line insulation monitoring equipment in substation,and analyzes several untypical phenomena in on-line monitoring for electrical equipment based on a great quantity of on-line monitoring data.And this paper also analyzes some possible factors that will influence on-line monitoring data,such as poor stability of dielectric loss measurement,high operation fault rate of signal collection,data analysis not based on substation operation mode,and lack of necessary analysis and judgement in on-line monitoring system.更多还原