基于晶闸管的混合型无弧高压直流断路器  

Thyristor Based Hybrid Arc-less High Voltage Direct Current Circuit Breaker

作　　者：周万迪 魏晓光 高冲 罗湘 曹均正 

机构地区：[1]国网智能电网研究院,北京市昌平区102200

出　　处：《中国电机工程学报》2014年第18期2990-2996,共7页Proceedings of the CSEE

摘　　要：伴随着高压直流输电工程日益增长,直流断路器作为直流线路中分断装置,也逐步受到了研究人员的关注,其能够促进多端直流及直流电网实现,推动可再生能源尤其是海上风电的开发。首先简要回顾了高压直流断路器研究状况,对现有方案进行了比较分析。随后提出了一种基于晶闸管的混合型无弧高压直流断路器,通过等效数学模型对工作阶段的电气参数和临界时刻进行了计算。最后以舟山5端直流系统电压200 kV为参照,利用PSCAD/EMTDC开展了断路器仿真研究,验证了理论分析的正确性以及所提断路器的可行性,并从技术和经济角度开展了性能分析。Increasing HVDC transmission project gradually attracts the researcher＇s attention to the high voltage DC circuit breaker （DCCB）, which is the interrupt equipment in DC line. The DCCB could promote the realization of multi-terminal direct current （MTDC） and DC grid, and advance the development of renewable energy such as offshore wind power. This paper firstly compared the various existing circuit breaker. A thyristor based on hybrid arc-less high voltage DCCB topology was proposed. According to the equivalent mathematical models established in the paper, the critical instants and electrical parameters for different operating stages of the DCCB were derived. Operating performance of the DCCB for Zhou Shan 5 terminals 200 kV DC system was analyzed using PSCAD/EMTDC simulations, which was compared from technology and economic aspects, and the correctness of the theoretical analysis and the feasibility of the circuit breaker were also proved.

关 键 词：直流电网 直流断路器 混合型断路器 无弧分断 晶闸管 

分 类 号：TM71[电气工程—电力系统及自动化]