电流互感器的现场高电压介损测量  

Investigation on on-Site Measurment of Dielectric Loss Angle of HV Current Transformer

作　　者：刘洪鑫 吴锦华[2] 

机构地区：[1]浙江丽水电业局,丽水323000 [2]浙江省电力试验研究所,杭州310014

出　　处：《高电压技术》2001年第5期78-78,80,共2页High Voltage Engineering

摘　　要：介损试验对发现电流互感器内部缺陷灵敏度较高 ,现场试验发现 ,较低电压下测量高电压介损时 ,干扰对测量数据影响较大 ,试验电压较高则影响相对较小。Measuring dielectric loss angle of HV current transformer has high sensitivity to find out the defect in the current transformer. It is difficult to measure accurately because the great disturbance of electromagnetic field influence the measurment of dielectric loss angle. Based on the measurement of dielectric loss angle for more than 20 group of 220 kV current transformers on site, we find that there are more electromagnetic field influence in measurment of dielectric loss angle in lower voltage and there are less influence in higher voltage. It is efficient to eliminate interference by changing phase sequence or reversing phase.

关 键 词：电流互感器 高电压 介质损失 测量 

分 类 号：TM855[电气工程—高电压与绝缘技术]