GE745系列变压器保护缺陷的分析与处理  

Analysis and Treatment of Faults for GE745 Transformer Protection

作　　者：舒鹏[1] 唐吉 王松[1] 

机构地区：[1]浙江省电力试验研究院,杭州310014 [2]宁波甬城配电网建设有限公司,浙江宁波315000

出　　处：《浙江电力》2011年第11期9-11,共3页Zhejiang Electric Power

摘　　要：介绍了GE公司745系列主变保护装置的基本原理与基本配置,重点讨论了差动保护二次谐波闭锁环节的缺陷,对小负荷正常运行情况下二次谐波测量值过高误闭锁差动保护的问题提出了解决方案,有利于保护装置更好地稳定运行。This paper describes the basic principles and configuration of the GE745 transformer protection and focuses on the defects of secondary harmonic locking for differential protection.It also provides the solution to the problem that the excessively high secondary harmonic measured value leads to mis-locking of differential protection under normal operating conditions at low load.It is favorable for steady operation of the protection.

关 键 词：变压器 差动保护 二次谐波 处理 

分 类 号：TM407[电气工程—电器]