中国电机工程学报Issue(12)：3026-3036,11.DOI:10.13334/j.0258-8013.pcsee.2015.12.013
柔性直流配电系统故障分析及限流方法
DC Fault Analysis and Current Limiting Technique for VSC-based DC Distribution System
摘要
Abstract
The isolation of the DC faults is the key technology for guaranteeing the supply reliability in the DC distribution system. This paper analyzed the transient characteristics of DC faults, and subdivided the transient process into three stages:the DC capacitor discharge stage, the diodes natural commutation conduct stage and the diodes synchronously conduct stage. The paper pointed out that the DC faults will affect the AC side, the converter and the DC side. According to the DC faults transient process, this paper analyzed the requirements and technology difficulties of the protection strategy and DC circuit breakers for the DC distribution system. Then this paper proposed a fault current limiting technique based on the resistive-type superconducting fault current limiter (R-SFCL) which can limit the overcurrent of the DC side, AC side and the anti-parallel diodes when the DC fault happens. Therefore, it can decrease the requirements of the action time and design difficulties for the protection strategy, and decrease the requirement of action speed and interrupting capacity for the DC circuit breaker. Finally, this paper carried out lots of simulation tests to verify the effectiveness of the theoretical analysis and proposed fault current limiting technique based on the Matlab/Simulink.关键词
直流配电/故障分析/故障限流/故障隔离/超导限流器Key words
DC distribution system/fault analysis/fault limiting/fault isolation/superconducting fault current limiter分类
信息技术与安全科学引用本文复制引用
李斌,何佳伟..柔性直流配电系统故障分析及限流方法[J].中国电机工程学报,2015,(12):3026-3036,11.基金项目
国家863高技术基金项目(2015AA050101)；国家优秀青年科学基金(51422703)。The National High Technology Research and Development of China 863 Program (2015AA050101) （2015AA050101）
The National Science Fund for Excellent Young Scholars (51422703) （51422703）
