基于电容调压原理的自适应高压直流断路器  

Adaptive HVDC Circuit Breaker Based on Capacitor Voltage Regulation Principle

作　　者：张增强 解超 陈伟伟 辛超山[1] ZHANG Zengqiang;XIE Chao;CHEN Weiwei;XIN Chaoshan(Economic Research Institute,State Grid Xinjiang Electric Power Co.,Ltd.,Urumqi 830013,China;School of Electrical Engineering,Xinjiang University,Urumqi 830047,China)

机构地区：[1]国网新疆电力有限公司经济技术研究院,乌鲁木齐830013 [2]新疆大学电气工程学院,乌鲁木齐830047

出　　处：《高压电器》2021年第9期152-160,共9页High Voltage Apparatus

基　　金：国家电网新疆电力有限公司经济技术研究院科技项目(SGXJJYY00GHJS800065,SGXJJY00GHJS1900041)。

摘　　要：能够快速开断大电流的高压直流断路器是影响直流输电的关键因素之一。提出一种自适应电容调压式高压直流断路器设计方案,通过并联调压电容实现电弧电流的反转,形成多个电流过零点,并在一定时间内将电弧电流限制在零点附近,为灭弧创造良好条件。理论推导和仿真结果表明提出的高压直流断路器方案能够适应不同运行工况,避免电力电子器件的通态损耗,有效减小电弧重燃几率,提高断路器的快速分断能力。HVDC circuit breaker which can be able to interrupt high current is one of the important factors affecting HVDC power transmission.A kind of design scheme of adaptive HVDC circuit breaker(HVDCCB)based on capacitor voltage regulation principle is proposed.The reversal of arc current is achieved by shunt voltage regulation capacitor so to form multiple current zero point,limit the arc current near the current zero point for a certain amount of times so to create good condition of arc interruption.Both theoretical derivation and simulation results show that the proposed HVDC CB scheme can adapt to various of operation conditions,avoid the conduction losses of power electronic devices,reduce the probability of arc reignition and improve fast breaking capability of the HVDCCB effectively.

关 键 词：直流输电 高压直流断路器 电容调压 过零点 快速分断 

分 类 号：TM561[电气工程—电器] TM721.1