直流故障限流器工作原理分析与特性研究  

Principle and Characteristic Analysis of Existing DC Fault Current Limiters

作　　者：郝鑫 王盼宝[1] 孙红梅 王卫[1] 徐殿国[1] HAO Xin;WANG Panbao;SUN Hongmci;WANG Wei;XU Dianguo(School of Electrical Engineering&Automation,Harbin Institute of Technology.Harbin 150001,Heilongjiang Province,China)

机构地区：[1]哈尔滨工业大学电气工程及自动化学院

出　　处：《电网技术》2019年第12期4414-4424,共11页Power System Technology

基　　金：国家重点研发计划项目(2018YFB0904700);国家电网公司科技项目(SGJS0000YJJS1801250)~~

摘　　要：直流故障限流器可有效限制直流输配电系统中短路故障电流,进而有助于提高系统的安全性。首先介绍了几种不同类型的直流故障限流器,并对其中典型直流故障限流器的拓扑结构与工作原理进行了分析。进一步,重点对磁通补偿型超导直流限流器、桥式固态直流限流器以及电容型直流固态限流器的工作特性进行了研究。在建立等效电路与应力分析的基础上,利用PLECS对上述几种直流限流器的运行特性进行了仿真验证,考察不同限流参数及拓扑结构改进前后的限流效果,对其中的优缺点进行了总结,并根据仿真结果对不同直流故障限流器的特性进行了综合对比。DC fault current limiter can effectively limit the short circuit fault current in DC transmission and distribution system and improve security of DC system. This paper presents several types of DC fault current limiters(FCLs), and analyzes the topology and working principle of typical DC FCLs, focusing on the working characteristics of flux-compensated superconducting, bridge-type solid-state and capacitive solid-state DC FCLs. Based on established equivalent circuits and stress analysis, the operation characteristics of above DC FCLs are studied and verified with simulation. Meanwhile, the current limiting effects and topologies before and after improvement of different current limiting parameters are investigated, and the advantages and disadvantages are summarized. Meanwhile, the characteristics of different DC FCLs are compared accordingly.

关 键 词：直流输配电系统 直流故障限流器 超导限流器 固态限流器 特性分析 

分 类 号：TM76[电气工程—电力系统及自动化]