地电波方法在金属封闭式开关柜放电故障诊断中的应用(英文)

被引：11

作者：

任明 ^{[1
,2
]}

董明 ^{[2
]}

任重 ^{[2
]}

彭华东 ^{[2
]}

李洪杰 ^{[2
]}

邱爱慈 ^{[1
,3
]}

机构：

[1] State Key Laboratory of Electrical Insulation for Power Equipment,Xi'an Jiaotong University

[2] School of Electrical Engineering,Xi'an Jiaotong University

[3] Northwest Institute of Nuclear

来源：

高电压技术 | 2011年 / 37卷 / 11期

关键词：

metal-enclosed switchgear; identification of defects; transient earth voltage(TEV); PD detection;

D O I：

10.13336/j.1003-6520.hve.2011.11.011

中图分类号：

TM591 [开关柜];

学科分类号：

摘要：

<正>In order to solve the problems of TEV(transient earth voltage) utilization,such as single judgment criterion and low reliability of PD detection in HV switchboard,this paper discussed the method on how to make a better utilization of TEV in PD detection of metal-enclosed switchgears.Through discussing the relationship among the temporal phase,number of pulses and threshold of measuring and extracting the features corresponding to different typical defects,test results showed that the needle discharge distributed in 0°～90°and 200°～340°with low appearance probability above high measurement threshold;internal discharge distributed in 0°～90°and 270°～315°,and showed a similar decreasing trend under increasing of the threshold in the two regions;suspended discharge distributed in 0°～135°and 180°～315°where the PD in negative half periods decreased more seriously than those in positive half with increasing threshold.These results followed the doctrine of consistency with the conclusions that were obtained by using the traditional pulse current method.The possibility of using TEV method to make identification of PD defects has been proved to prepare for further research.

引用

页码：2672 / 2679

页数：8

共 6 条

[1] 变电站电磁骚扰耦合路径分析 [J].