电气传动2025，Vol.55Issue(3)：64-71,8.DOI:10.19457/j.1001-2095.dqcd25289
一种组合式直流断路器的供能方法
An Energy Supply Method of Combined DC Circuit Breaker
摘要
Abstract
In view of the problem that the transfer branch of the current high-voltage DC circuit breaker mostly adopts uncontrollable full-bridge transformer coupling energy supply,which is not conducive to controllable and stable power supply,and low energy utilization,a combined DC circuit breaker energy supply method was proposed.A bidirectional DC-DC converter topology with energy storage device(battery or super capacitor)was used to control the voltage control and energy recovery and reuse of the precharged capacitor in the resonant transfer branch of the combined DC circuit breaker.A control strategy for DC-DC energy supply using dual-active-bridge(DAB)was developed as an example.The improved energy mode of supply can not only ensure the fast and stable supply of transferred branch energy during the rapid opening of the combined high-voltage DC circuit breaker in the event of DC power grid failure,but also use the recovered energy for the reclosing process after fault recovery.The simulation and experimental results show that the proposed bidirectional DC-DC converter replaces the uncontrollable full-bridge combined high-voltage DC circuit breaker energy supply method,and the output voltage is more stable,and the energy utilization rate of the system is improved.关键词
直流断路器/供能/故障开断/双有源桥变换器Key words
DC circuit breaker/energy supply/fault breaking/dual-active-bridge(DAB)converters分类
动力与电气工程引用本文复制引用
张旭阳,张茂松,王秀芹,陈忠,王群京..一种组合式直流断路器的供能方法[J].电气传动,2025,55(3):64-71,8.基金项目
国家电网有限公司总部管理科技项目(5500-202220110A-1-1-ZN) （5500-202220110A-1-1-ZN）
