混合多端直流输电系统线路保护方案研究  

Research on Protection Scheme of Hybrid Multi-terminal DC Transmission Lines

作　　者：陈争光 周泽昕 王兴国 詹清清 郝亮亮[2] CHEN Zhengguang;ZHOU Zexin;WANG Xingguo;ZHAN Qingqing;HAO Liangliang(State Key Laboratory for Power Grid Safety and Energy Conservation (China Electric Science Research Institute),Haidian District, Beijing 100192, China;College of Electrical Engineering, Beijing Jiaotong University, Haidian District, Beijing 100044, 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]北京交通大学电气工程学院,北京市海淀区100044

出　　处：《电网技术》2019年第7期2617-2622,共6页Power System Technology

基　　金：电网安全与节能国家重点实验室开放基金的资助(No.JBB51201801309)

摘　　要：混合多端直流输电具有较好的工程应用前景,目前对于混合多端直流线路保护的研究主要集中在原理与算法方面,缺乏对保护配置方案进行系统的研究。该文在PSCAD上搭建了混合多端直流输电典型拓扑结构仿真模型,分析了混合多端直流输电线路保护技术难点,研究了混合多端直流线路故障特征,在此基础上提出了直流线路保护的配置方案及直流断路器重合闸策略,具有一定的工程应用价值。Hybrid multi-terminal HVDC transmission has better engineering application prospects. At present, the research of hybrid multi-terminal HVDC line protection mainly focuses on principle and algorithm, and lacks systematic research on protection configuration scheme. In this paper, a typical hybrid multi-terminal HVDC transmission topology simulation model is built on PSCAD, and the technological difficulties in the hybrid multi-terminal HVDC transmission line protection are analyzed. The characteristics of the hybrid multi-terminal HVDC line fault are studied. On this basis, the configuration scheme of the HVDC line protection and the reclosing strategy of DC circuit breaker are proposed. It has engineering application value.

关 键 词：混合多端直流输电 线路保护 重合闸策略 

分 类 号：TM721[电气工程—电力系统及自动化]