文章摘要
张盛梅,安婷,裴翔羽,等.混合式直流断路器重合闸策略[J].电力系统自动化,2019,43(6):129-136. DOI: 10.7500/AEPS20180528005.
ZHANG Shengmei,AN Ting,PEI Xiangyu, et al.Reclosing Strategy for Hybrid DC Circuit Breakers[J].Automation of Electric Power Systems,2019,43(6):129-136. DOI: 10.7500/AEPS20180528005.
混合式直流断路器重合闸策略
Reclosing Strategy for Hybrid DC Circuit Breakers
DOI:10.7500/AEPS20180528005
关键词: 混合式直流断路器  转移支路  重合闸策略  同步重合  分级重合  过电压冲击
KeyWords: hybrid DC circuit breaker  transfer branch  reclosing strategy  synchronous reclosing  step-by-step reclosing  overvoltage shock
上网日期:2018-10-31
基金项目:国家重点研发计划资助项目(2017YFB0902400)
作者单位E-mail
张盛梅 新能源电力系统国家重点实验室(华北电力大学), 北京市 102206 zhangshengmei0104@163.com 
安婷 全球能源互联网研究院, 北京市 102209  
裴翔羽 中国电力科学研究院有限公司, 北京市 100192  
杨杰 全球能源互联网研究院, 北京市 102209  
庞辉 全球能源互联网研究院, 北京市 102209  
赵成勇 新能源电力系统国家重点实验室(华北电力大学), 北京市 102206  
摘要:
      架空线的使用将造成未来柔性直流电网瞬时性故障发生的概率增大,必须配备有效的重合闸策略进行系统恢复。为了减少混合式直流断路器转移支路同步重合可能带来的保护误动、绝缘破坏甚至电力电子器件损坏等不利影响,提出了一种利用转移支路分级投入的新型重合闸策略。结果表明,转移支路分级重合能够有效降低重合闸过程中产生的电压突变及由此带来的不利影响。最后在PSCAD/EMTDC仿真平台上搭建了4端柔性直流电网电磁暂态模型,验证了所提出的新型重合闸策略的有效性和可行性,并对两种重合闸策略进行了适用性分析。
Abstract:
      Due to the use of overhead lines, the probability of temporary faults in the future voltage source converter(VSC)based DC grid will increase, and effective reclosing strategies must be adopted for the system recovery. To reduce the adverse impacts of protection misoperation, insulation failure, and even damage to power electronic devices caused by the synchronous operation of the hybrid DC circuit breaker transfer branch, a novel reclosing strategy based on the step-by-step operation of transfer branch is proposed. The results show that the abrupt change of voltage is largely reduced during the step-by-step operation of transfer branch, and the potential negative impacts could be eliminated thoroughly. Finally, the validity and feasibility of the novel reclosing strategy are verified in a four-terminal annular VSC based DC grid electromagnetic transient model, and the applicability of the two reclosing strategies is analyzed.
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