油入電力機器のアーク故障に起因する絶縁油の燃焼を想定した大型電気室内の圧力上昇解析

カテゴリ: 論文誌(論文単位)

グループ名: 【B】電力・エネルギー部門

発行日: 2017/04/01

タイトル(英語): Analysis of Pressure Rise in Large Electric Room due to Combustion of Oil Resulting from Fault Arc in Oil-filled Equipment

著者名: 神足　将司（（一財）電力中央研究所 電力技術研究所），宮城　吏（（一財）電力中央研究所 電力技術研究所），岩田　幹正（（一財）電力中央研究所 電力技術研究所），天川　正士（（株）電力テクノシステムズ）

著者名(英語): Masashi Kotari (Electric Power Engineering Research Lab., Central Research Institute of Electric Power Industry (CRIEPI)), Tsukasa Miyagi (Electric Power Engineering Research Lab., Central Research Institute of Electric Power Industry (CRIEPI)), Mikimasa Iwata (Electric Power Engineering Research Lab., Central Research Institute of Electric Power Industry (CRIEPI)), Tadashi Amakawa (Electric Power Engineering Systems Co., Ltd.)

キーワード: 油入電力機器，大型電気室，アーク故障，油の燃焼エネルギー，圧力上昇・伝搬　　oil-filled equipment，large electric room，fault arc，energy on combustion of oil，pressure rise and propagation

要約(英語): In this paper, we present an analysis of the pressure rise caused by combusting of oil resulting from a fault arc, assuming that the arc occurs in oil-filled equipment in a large electric room with an opening. In the analysis, we clarified that the location and volume of the arc fault and the location of the opening affected the pressure rise and the propagation around the arc fault. We found that the initial pressure rise (P1st) at the floor adjacent to the wall and equipment was greater than those at other locations. In particular, P1st was largest at the corner of the electric room owing to a superimposed pressure wave. Moreover, the value ofP1st at the floor adjacent to the equipment was independent of the location of the opening. It was also found that P1st decreased inversely propositionally to the distance between the floor adjacent to the wall and equipment and the location where the fault occurred. Also, the time to reach P1st was decided by the distance in spite of part of arc fault, arc fault volume and location of the opening, and the pressure wave which occurs from the arc fault is propagated in air at sonic speed, The results would be utilized for a strength design of wall in an electric room.

本誌: 電気学会論文誌B（電力・エネルギー部門誌） Vol.137 No.4 （2017）

本誌掲載ページ: 330-338 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejpes/137/4/137_330/_article/-char/ja/