标题：Optimization and decision for limiting short circuit current considering sensitivity ranking
作者：Yang, Dong ;Zhao, Kang ;Zhao, Yan ;Liu, Yutian
作者机构：[Yang, Dong ;Zhao, Yan ] State Grid Shandong Electric Power Research Institute, Jinan, China;[Zhao, Kang ;Liu, Yutian ] Key Laboratory of Power System 更多
会议名称：2014 International Conference on Power System Technology, POWERCON 2014
会议日期：20 October 2014 through 22 October 2014
来源：POWERCON 2014 - 2014 International Conference on Power System Technology: Towards Green, Efficient and Smart Power System, Proceedings
关键词：Analytic hierarchy process; fuzzy comprehensive evaluation; particle swarm optimization; sensitivity analysis; short circuit current
摘要：Limiting short circuit current and increasing power system stability is a contradiction. An optimization and decision model for limiting short circuit current considering sensitivity ranking is established. Firstly, the influence on impedance matrix caused by current limiting measures is analyzed, and a variable selection strategy considering the sensitivity relation between current limiting measures and node self-impedance is proposed. Secondly, the objective functions which minimize the total investment costs and the short circuit capacity margin are presented, and an adaptive hybrid particle swarm optimization algorithm is used to find a scheme set. Finally, a comprehensive evaluation model is established based analytic hierarchy process and the systematic and quantitative assessments are realized by the fuzzy algorithm. Simulation results of the practical power grid demonstrated the efficiency and speediness of this proposed model. © 2014 IEEE.