摘要
介绍和分析母线差动(简称母差)保护电流互感器(current transformer,CT)和支路CT的断线情况及断线告警和闭锁功能复归方式存在的问题及改进方法,母差保护支路CT不平衡判据存在的问题及改进方法,母差保护CT断线闭锁相别选择存在的问题及改进方法;目的是提高母差保护的整体性能,保障电力系统的安全稳定运行。
This paper introduces and analyzes breakage in current transformer （CT） of bus differential （BD for short） protection and subcircuit CT, problems and improvement of resetting mode of breakage alarming and blocking, imbalance of subcircuit CT of bus differential protection and phase selection of wired-break blocking of CT of bus differential protection, for the purpose of improving overall performance of bus differential protection and ensuring safe and stable operation of power system.
出处
《广东电力》
2012年第4期81-83,87,共4页
Guangdong Electric Power
关键词
母线差动保护
电流互感器
告警和闭锁功能
复归方式
bus differential protection
current transformer
alarming and blocking function
resetting mode
