一种基于直流断路器两端电压的混合级联多端直流输电断路器自适应重合闸方法  

An Adaptive Reclosure Method for Hybrid Cascade Multi-terminal HVDC Circuit Breaker Based on Two-terminal Voltage of DC Circuit Breaker

作　　者：陈争光 周泽昕 王兴国 杜丁香 温伟杰 杨亮 郭雅蓉 曹虹 CHEN Zhengguang;ZHOU Zexin;WANG Xingguo;DU Dingxiang;WEN Weijie;YANG Liang;GUO Yarong;CAO Hong(State Key Laboratory for Power Grid Safety and Energy Conservation (China Electric Power Research Institute), Haidian District, Beijing 100192, China;College of Electrical Automation and Information Engineering, Tianjin University, Nankai District, Tianjin 300072, China;State Grid Corporation of China, Xicheng District, Beijing 100031, China)

机构地区：[1]电网安全与节能国家重点实验室(中国电力科学研究院有限公司),北京市海淀区100192 [2]天津大学电气自动化与信息工程学院,天津市南开区300072 [3]国家电网有限公司,北京市西城区100031

出　　处：《电网技术》2019年第7期2623-2631,共9页Power System Technology

基　　金：电网安全与节能国家重点实验室开放基金资助(JBB51201801750)

摘　　要：混合级联多端直流输电技术是未来特高压直流输电的重要发展方向之一,其重合闸策略是关系到直流系统能否可靠运行的重要因素。首先分析了混合级联多端直流输电直流线路故障特征,进而研究了组合式直流断路器在混合级联多端直流输电中的应用,在此基础上提出了基于直流断路器两端电压的直流断路器自适应重合闸方法,并在PSCAD/EMTDC上搭建含有组合式直流断路器的混合级联多端直流输电典型模型,对重合闸策略进行了验证。Hybrid cascade multi-terminal HVDC technology is one of the important development directions of UHVDC transmission in the future, and its reclosure strategy is an important factor related to reliable operation of HVDC system. Firstly, the fault characteristics of hybrid cascade multi-terminal HVDC transmission lines are analyzed, and then the application of combined HVDC circuit breaker in hybrid cascade multi-terminal HVDC transmission is studied. On this basis, an adaptive reclosure method of DC circuit breaker based on the voltages at both ends of DC circuit breaker is proposed. A typical hybrid cascade multi-terminal DC transmission model with composite DC circuit breakers is built on PSCAD/EMTDC, and the reclosure strategy is verified.

关 键 词：混合级联多端直流输电系统 组合式直流断路器 重合闸方法 

分 类 号：TM721[电气工程—电力系统及自动化]