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文章摘要
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
Received:April 10, 2017  Revised:April 10, 2017
DOI:
中文关键词: 直流电网  高压直流断路器  可控硅  拓扑结构
英文关键词: DC grid  HVDC circuit breaker  SCR  topological structure
基金项目:
Author NameAffiliationE-mail
huxuming* Shanghai Jiao Tong University 1960731125@qq.com 
wang feng hua Shanghai Jiao Tong University fhwang7723@sjtu.edu.cn 
Yao Gang Shanghai Jiao Tong Universit yaogangth@163.com 
Zhou Lidan Shanghai Jiao Tong University zhoulidan@sjtu.edu.cn 
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中文摘要:
      作为直流线路中的分断装置,高压直流断路器是快速限制并切断故障电流、维持直流电网安全稳定运行的关键技术手段。本文在对比分析现有高压直流断路器典型结构的基础上,提出了一种基于可控硅串联技术的新型高压直流断路器,详细描述了其拓扑结构、工作原理和典型特点,并使用PSCAD软件仿真分析了不同短路电流下所提高压直流断路器的开断特性及其影响因素。最后,通过在实验室内搭建高压直流断路器实物模型,利用dSPACE工作平台进行了断路器的电流开断实验。结果表明,所提出的新型高压直流断路器能够实现快速关断与恢复通流,通态损耗低且通流能力强,具有现实可行性。
英文摘要:
      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.
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