动态延时分相顺序控制的断路器合闸新方法

A Novel Method of Circuit Breaker Closing Based on Dynamic Delayed Split Phase Sequence Control

针对超高压输电线路并联电抗器引起的直流偏置电流制约断路器开断灭弧,设计了断路器顺序合闸控制原理及相应装置,提出动态延时分相顺序合闸的新方法,适用于电力系统中变电站、发电厂的分相控制断路器特殊目的的合闸控制。经过工厂试验和工程验证,该方案能有效解决输电线路偏置电流影响断路器灭弧的难题。

To solve the problem of shunt reactor in UHV transmission lines caused breaker interrupter of DC offset current, the scheme and the device of circuit breaker closing based on sequence control was designed. A novel method of dynamic delay split phase sequence switch was proposed. The proposed scheme was applicable to in substation and power plant phase control circuit breaker with special purpose switching control in power system. Through factory test and engineering verification, the scheme could effectively solve the problem caused by DC offset current of the breaker in transmission line.