电力系统自动化2017，Vol.41Issue(12)：118-123,6.DOI:10.7500/AEPS20161222005
基于电压源换流器的柔性配电系统故障限流方案
Fault Current Limiting Strategy for Flexible Power Distribution System Based on Voltage Source Converters
摘要
Abstract
The fault current of DC line rises rapidly because of the discharge of capacitor after the occurrence of fault in DC distribution network based on voltage source converters (VSC).The fragile electronic devices in the inverter require the DC breaker operate faster than the traditional AC breaker.With regard to the application of fault current limiter (FCL) in DC systems, not only the DC-side fault current but also the current at the AC side and in the converter itself should be limited during a DC fault.Considering the whole-system current-limiting capability, a new current limiter based on full-controlled transistor is proposed.According to the fault transient process of bipolar short-circuit fault, the current-limiting principle is analyzed in detail.Meanwhile, the selection standard and theoretical calculating method of the resistor are also discussed.Finally, simulation tests based on PSCAD/EMTDC are carried out to verify the effectiveness of this limiting scheme.关键词
直流配电网/故障隔离/限流原理/参数选择Key words
DC distribution network/fault isolation/current limiting principle/parameter selection引用本文复制引用
许阔,王甜婧,朱永强,夏瑞华..基于电压源换流器的柔性配电系统故障限流方案[J].电力系统自动化,2017,41(12):118-123,6.基金项目
中国-丹麦政府间科技合作项目(2014DFG72620). （2014DFG72620）
