Analysis for the Mal-fauntion of Protection Devices at the Primary Feeders with PV Systems

カテゴリ: 部門大会

論文No: 165

グループ名: 【B】平成23年電気学会電力・エネルギー部門大会講演論文集

発行日: 2011/08/30

タイトル(英語): Analysis for the Mal-fauntion of Protection Devices at the Primary Feeders with PV Systems

著者名: JOONHO SON(Korea University of Technology and Education),SEONGHO JI(Korea University of Technology and Education),HYUNSEOK PARK(Korea University of Technology and Education),HyunAh Park(Korea University of Technology and Education),DAESEOK RHO(Korea University of Technology and Education),KyeongHwa Kim(Korea Polytechnic Ι),JinCheol Shin(Korea Polytechnic V)

著者名(英語): JOONHO SON(Korea University of Technology and Education),SEONGHO JI(Korea University of Technology and Education),HYUNSEOK PARK(Korea University of Technology and Education),HyunAh Park(Korea University of Technology and Education),DAESEOK RHO(Korea University of Technology and Education),KyeongHwa Kim(Korea Polytechnic Ι),JinCheol Shin(Korea Polytechnic V)

キーワード: Mal-function|Protection Devices|Distribution Systems|PV Systems|Mal-function|Protection Devices|Distribution Systems|PV Systems

要約(日本語): Recently, new dispersed power sources such as photovoltaics, wind power, fuel cell etc. are energetically interconnected and operated in the distribution systems, as one of the national projects for alternative energy. This paper deals with the optimal countermeasures for the mal-function of protective devices at primary feeder in distribution systems when new power sources like photovoltaic (PV) systems are interconnected, based on the symmetrical components of short circuit studies. When new power sources are considered to be interconnected to distribution systems, bi-directional power flow and interconnection transformer connection of new power sources may cause the operation problems of protective devices (mainly re-closer), since new power sources can change typical characteristics of distribution systems. Therefore, this paper shows an analysis skill of the mal-functional mechanism of protective relay and proposes the optimal solution for the mal-function problem using the symmetrical components of fault analysis. And, this paper also shows the effectiveness of proposed method by the simulation at the field distribution systems.

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