现代电子技术2012，Vol.35Issue(24)：191-194,4.
电流互感器铁心饱和对继电保护的影响和处理方法
Influence of current transformer saturation on relay unit and processing method
牛利涛 1彭金宁 1兀鹏越 1何信林 1张文斌1
作者信息
- 1. 西安热工研究院 调试部,陕西 西安710043
- 折叠
摘要
Abstract
In order to analyze the influence of current transformer saturation on relay unit, by means of harmonic analysis method, steady state characteristics and transient characteristic of current transformer saturation are introduced in combination with a example of differential protection misoperation caused by current transformer saturation. The influence of residual magnetism and primary current aperiodic componenton on current transformer transient state saturation is summaried. The influence of current transformer saturation on the operation of differential protection and over current protection is analyzed. Some preventive measures such as restriction of the short-circuit current, selection of the right current transformer and reduction of the current transformer load are also discussed to reduce the influence of the current transformer saturation on relay unit.关键词
电流互感器/继电保护/铁心饱和/谐波分析Key words
current transformer/ relaying protection/ saturation/ harmonic analysis分类
信息技术与安全科学引用本文复制引用
牛利涛,彭金宁,兀鹏越,何信林,张文斌..电流互感器铁心饱和对继电保护的影响和处理方法[J].现代电子技术,2012,35(24):191-194,4.
