摘要
介绍了电网运行方式对后备保护整定的影响,论述了零序过流、间隙零序过流、零序过压保护的原理,阐述了保护定值的设置。
This paper introduces the influences of power grid＇s operation mode on the setting of backup protection,and discusses the principles of zero sequence over-current protection,interstitial zero sequence over-current protection and zero sequence over-voltage protection,and expounds the protection settings.
出处
《科技情报开发与经济》
2011年第21期201-203,共3页
Sci-Tech Information Development & Economy
关键词
主变压器
后备保护
零序保护
main transformer
backup protection
zero sequence protection
