高电压技术2017，Vol.43Issue(4)：1079-1085,7.DOI:10.13336/j.1003-6520.hve.201700328003
高压直流断路器的避雷器分步投入分断及仿真方法
Breaking and Simulation Method of Arrestors Step-by-step Operating of High Voltage DC Circuit Breaker
摘要
Abstract
To reduce the peak value of fault current of DC power grid,we introduced a high voltage DC circuit breaker that could break short fault without arc,and analyzed the principle of arrester and fast mechanical switch.Then,we proposed a new breaking method to solve the problem of relatively long duration of fast mechanical switch breaking.The arrestors that immediately operate mechanical switch can meet the demands of voltage withstanding capacity;the method reduces the peak value of fault current and stress endured by key equipment in system,besides the energy absorbed by arrestors is lowered and thermal effect caused by impulse current is minimized.Finally,the simulation results in PSCAD/EMTDC show that the proposed breaking method is effective.关键词
高压直流断路器/氧化锌避雷器/快速机械开关/故障电流峰值/分断方法Key words
high voltage DC circuit breaker/zinc oxide arrester/fast mechanical switch/fault current spikes/breaking method引用本文复制引用
吴学光,王晓晨,朱永强,林畅,刘栋,王婉君..高压直流断路器的避雷器分步投入分断及仿真方法[J].高电压技术,2017,43(4):1079-1085,7.基金项目
国家电网公司科技项目(XTB17201500247).Project supported by Science and Technology Project of SGCC (XTB17201500247). （XTB17201500247）
