微机型变压器保护分析与应用  

Protection of microcomputer type transformer

作　　者：卞宏文[1] 赵雷[2] 

机构地区：[1]黑龙江省阿城继电器股份有限公司,黑龙江阿城150302 [2]大庆油田热电厂,黑龙江大庆163314

出　　处：《黑龙江电力》2004年第3期215-218,220,共5页Heilongjiang Electric Power

摘　　要：在分析变压器内部故障和励磁涌流区别的基础上,分析比较了微机型变压器差动保护中采用间断角、二次谐波和波形识别原理的优缺点。对微机型变压器保护中干扰的来源进行了探讨,提出了相应的抗干扰措施和办法。By analysing the difference between internal failare and excitation surge of transformer,the advantages and disadvantages of interrupted angle,second order harmonics and waveform identification principles adopted in the differential protection of microcomputer type transformer are compared.lnterference sources are discussed,and anti-interference ways and means are suggested for protection of microcomputer type transformer.

关 键 词：微机型变压器保护 励磁涌流 间断角原理 二次谐波原理 波形识别原理 

分 类 号：TM772[电气工程—电力系统及自动化]