柔性直流配电系统过电流及过电压防护研究综述  

Review on Research of Overvoltage and Overcurrent Protection for Flexible DC Distribution System

作　　者：韩永霞[1] 冯帅松 高毓群 郑文博 张竞涵 赵宇明 韦甜柳 李立浧[1] HAN Yongxia;FENG Shuaisong;GAO Yuqun;ZHENG Wenbo;ZHANG Jinghan;ZHAO Yuming;WEI Tianliu;LI Licheng(School of Electric Power Engineering,South China University of Technology,Guangzhou,Guangdong 510641,China;Shenzhen Power Supply Bureau Co.,Ltd.,Shenzhen,Guangdong 518020,China;CSG Electric Power Research Institute,Guangzhou,Guangdong 510663,China)

机构地区：[1]华南理工大学电力学院,广东广州510641 [2]深圳供电局有限责任公司,广东深圳518020 [3]南方电网科学研究院有限责任公司,广东广州510663

出　　处：《广东电力》2020年第12期81-89,共9页Guangdong Electric Power

基　　金：国家自然科学基金项目(51807068)。

摘　　要：多端柔性直流配电系统在发生接地和短路等故障时,故障的诊断与快速隔离、过电流及其抑制、过电压及其防护问题是系统安全可靠性运行的关键。为此首先概述了柔性直流配电系统的典型拓扑结构和主接线;其次,从故障隔离措施与限流方案的配合设计方法、系统过电压与绝缘配合研究方法、设备暂态电流研究方法等方面进行了梳理分析;然后,分析提出了同样基于故障中电磁暂态过程分析的故障诊断及隔离、限流方案、过电压与绝缘配合、设备暂态电流等研究,有必要从系统的角度开展其多方面的综合协调防护研究;最后,对柔性直流配电系统未来可能遇到的电磁暂态分析问题进行了展望。When faults such as grounding and short-circuit occur in the multi-terminal flexible DC distribution system,fault diagnosis and rapid isolation,overcurrent and its suppression,overvoltage and its protection are the keys to the safe and reliable operation of the system.This article firstly summarizes the typical topology and the main wiring of the flexible DC power distribution system.Secondly,it discusses the coordination design method of fault isolation measures and current limiting scheme,the research method of system overvoltage and insulation coordination,and the research method of equipment transient current.Then,it analyzes and puts forward the research on fault diagnosis and isolation,current limiting scheme,overvoltage and insulation coordination,equipment transient current based on the analysis of electromagnetic transient process in the fault.The article point out It is necessary to carry out the comprehensive coordinated protection research in many aspects systematically.Finally,it prospects for problems of electromagnetic transient analysis that may be encountered in the future of flexible DC distribution systems.

关 键 词：中压直流配电系统 过电压 过电流 雷电侵入波 绝缘配合 限流方案 防雷方案 

分 类 号：TM721.1[电气工程—电力系统及自动化] TM86