新型GIS电流互感器便携式退磁设备研制  

Development of the Portable Demagnetizing Apparatus of a New Type GIS Current Transformer

作　　者：林凯 LIN Kai(Gtate Grid Ningde Power Supply Company,Ningde 352100,China)

机构地区：[1]国网宁德供电公司,福建宁德352100

出　　处：《电气开关》2024年第6期8-10,14,共4页Electric Switchgear

基　　金：国网福建省电力有限公司科技项目资助“新型便携式GIS电流互感器退磁成套装置研制”(52139022000G)。

摘　　要：针对传统电流互感器退磁装置退磁效果不佳的问题,研制便携式GIS电流互感器退磁成套装置。以交流法为基础,根据选择结果设置退磁装置参数。在直流法的基础上利用恒压变频法和恒频变压法抑制剩磁。基于电压法设计二次绕组励磁导纳退磁电路,通过实验将该装置与传统装置A、B进行对比。实验结果:在相同电流比和施加电压的情况下,传统装置的退磁比例为75.2%和86.3%,该装置将退磁比例提高至96.5%,实验成功。In view of the problem of uorse demagnetizing effect of the demagnetizing apparatus of a traditional current transformer,develop a complete set of demagnetizing apparatus of the portable GIS current transformer,on the basis of AC way,set up demagnetizing apparatus parameters according to selective results.On the basis of DC way,use constant voltage frequency mothed and constant frequency varying voltage mothed to control residual magnetism.Based on the voltage method to design secondary winding excitation admittace degaussing circuit.By the experiment,contrast the apparatus in the paper with traditional apparatus A and B.The experiment results show that under the same current ratio and exert voltage conditions,the degaussing ratio of traditional apparatus is 75.2% and 86.3%.The deaussing ration in the paper is up to 96.5%.The experiment is successful.

关 键 词：GIS电流互感器 便携式退磁设备 直流法 

分 类 号：TM452[电气工程—电器]