胡徐铭,王丰华,姚钢,周荔丹.基于可控硅串联技术的新型固态高压直流断路器[J].电测与仪表,2018,55(5):88-94. huxuming,wang feng hua,Yao Gang,Zhou Lidan.A New Solid-State High Voltage Direct Current Circuit Breaker With Series-Connected SCR Technology[J].Electrical Measurement & Instrumentation,2018,55(5):88-94.
基于可控硅串联技术的新型固态高压直流断路器
A New Solid-State High Voltage Direct Current Circuit Breaker With Series-Connected SCR Technology
As the interrupt equipment in DC line, HVDC circuit breaker(CB) is the key point to break the fault current and ensure the safety of DC grid. This paper firstly analyzed and compared the topological structure of the current HVDC CB. Then a new HVDC CB based on the technology of Silicon Controlled Rectifier (SCR) in series connection is presented, and the topological structure, working principle and characteristics are introduced in details. The interruption performance of this new CB under different levels of fault current and parameters which affect its performance by PSCAD software are simulated. At last, the real model of this new HVDC CB in the lab is built and the interruption experiment by using dSPACE platform is conducted. Simulation and experimental results have shown that this new HVDC CB is capable of breaking and recovering the current quickly with the advantages of low on-state loss and powerful current transporting capability. Therefore this new HVDC CB can be used in real DC grid.
