直流配电网故障识别和定位技术研究综述  

An overview of fault identification and location technology for DC distribution networks

作　　者：余修勇 肖立业[1,2,3] YU Xiu-yong;XIAO Li-ye(Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China;University of Chinese Academy of Sciences, Beijing 100049, China;Key Laboratory of Applied Superconductivity, Chinese Academy of Sciences, Beijing 100190, China)

机构地区：[1]中国科学院电工研究所,北京100190 [2]中国科学院大学,北京100049 [3]中国科学院应用超导重点实验室,北京100190

出　　处：《电工电能新技术》2019年第7期56-66,共11页Advanced Technology of Electrical Engineering and Energy

基　　金：国家自然科学基金项目(51721005);中国科学院前沿科学重点研究项目(QYZDJ-SSW-JSC025)

摘　　要：直流配电网的保护技术尚处于起步阶段,缺乏实际经验和相关标准,本文试图对直流配电网故障识别和定位技术的研究现状做一个较为全面的介绍,并探讨未来进一步的研究方向。首先概述了直流配电网的拓扑结构、接地方式、保护设备、故障类型和故障暂态特征等与保护方案设计紧密相关的内容。其次,对直流配电网的故障识别技术进行了总结归纳,分析了各类型方法主要的原理和优缺点,并对交流和直流配电网不同故障识别方法的特点进行了对比。最后,对现有的直流配电网故障定位方法进行了分类,说明了各种定位方法的基本原理,分析了各故障定位方法存在的不足和可能的改进方案。As one of the key technologies and bottlenecks for development and application of DC distribution net- work, the protection technology is still in its infancy, lack of practical experience and standards. This paper first o- verviews the topology structure, grounding mode, fault type and transient characteristics of the DC distribution net- work, which are closely related to the protection scheme design. Then, the fault identification technology of DC distribution network is summarized, and the main principles and characteristics of each type of method are ana- lyzed. It is considered that with the development of smart distribution network, the communication-based protection technology has certain advantages. Finally, the existing fault location methods of DC distribution network are classi- fied, and the basic principles of various location methods are illustrated. In addition, this paper summarizes the shortcomings of various fault location methods and gives possible improvements.

关 键 词：直流配电网 保护技术 故障识别 故障定位 电流差动保护 注入信号法 

分 类 号：TM77[电气工程—电力系统及自动化]