舒鹏,唐吉,王松
SHU Peng 1,TANG Ji 2,WANG Song 1(1.Zhejiang Electric Power Test and Research Institute

• 1:浙江省电力试验研究院
• 2:宁波甬城配电网建设有限公司

摘要(Abstract)：

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(KeyWords)： 变压器;差动保护;二次谐波;处理
transformer;differential protection;secondary harmonic;treatment

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 舒鹏,唐吉,王松
SHU Peng 1,TANG Ji 2,WANG Song 1(1.Zhejiang Electric Power Test and Research Institute

DOI: 10.19585/j.zjdl.2011.11.003

参考文献(References)：

• 国家电力调度通信中心.国家电网公司继电保护培训教材[M].北京:中国电力出版社,2009.
• 朱松林.继电保护培训实用教程[M].北京:中国电力出版社,2011.