断路器单电流互感器与双电流互感器配置对保护装置及变电运行的影响

The Influence of the Configuration of the Circuit Breaker Single Current Transformer and Double Current Transformer on the Protection Device and Substation Operation

电流互感器和断路器作为变电站必备的一次设备,存在于每个变电站。不同类型变电站每个开关配置的电流互感器个数不同,对变电站系统继电保护装置有一定的影响。因此,介绍了电流互感器的基本原理,用典型运行方式分析断路器不同电流互感器配置变电站系统对常见继电保护装置(220 kV母差保护、纵联保护)的影响和对变电运行的指导。

The current transformer and circuit breaker are the necessary primary equipment in each substation.The number of current transformers is different for each switch in different types of substation,which has a certain influence on the relay protection device of the substation system.This paper introduces the basic principle of current transformer,and analyses the influence of transformer substation system with different current transformer of circuit breaker on common relay protection devices (220kV protection,longitudinal protection)by typical operation mode,as well as its guidance to the operation of power transformer.