电力系统自动化2017，Vol.41Issue(12)：77-85,167,10.DOI:10.7500/AEPS20170328003
柔性直流输电系统新型故障重启方法
Novel Restart Scheme of DC Fault for Flexible DC Transmission System
摘要
Abstract
The overhead-line based DC transmission is becoming the developing trend of flexible DC transmission because of the breakthrough of the converter-based DC fault isolating technique.The probability of nonpermanent faults on the overhead line is very large, thus the restart scheme should be configured to increase the supply reliability.However, the conventional restart scheme will lead to the second overcurrent or overvoltage damages, which is detrimental to the safe operation of the system.This paper proposes a novel restart scheme, which makes the converter operate as an uncontrolled rectifier, then the fault property can be determined according to the current characteristic of the DC line.Compared with the conventional restart scheme, the overcurrent and overvoltage problems during the restarting period could be avoided effectively.Finally, cases in point are used via the PSCAD/EMTDC to verify the feasibility and superiority of the proposed restart scheme.关键词
柔性直流输电/架空线路/重启策略/故障性质判断Key words
flexible DC transmission/overhead line/restart scheme/fault property determination引用本文复制引用
李斌,何佳伟,李晔,洪潮,张野,杨健..柔性直流输电系统新型故障重启方法[J].电力系统自动化,2017,41(12):77-85,167,10.基金项目
国家自然科学基金资助项目(51677126) （51677126）
中国南方电网有限责任公司重点科技项目(CSGTRC-K163001).This work is supported by China Southern Power Grid Company Limited (No.CSGTRC-K163001). （CSGTRC-K163001）
