油入変圧器の周波数応答分析診断に関する測定パラメータの影響

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2011/10/01

タイトル(英語): Influence of Measurement Parameters on Frequency Response Analysis Diagnosis for Oil-immersed Transformer

著者名: 佐野　貴弘（(株) 日本AEパワーシステムズ 変圧器事業部），宮城　克徳（(株) 日本AEパワーシステムズ 研究開発本部）

著者名(英語): Takahiro Sano (Transformer Division, Japan AE Power Systems Corporation), Katsunori Miyagi (R&D Division, Japan AE Power Systems Corporation)

キーワード: 油入変圧器，周波数応答分析，故障診断　　oil-immersed transformers，frequency response analysis (FRA)，fault diagnosis

要約(英語): Appropriate monitoring and maintenance become important as the oil-immersed transformer ages. Generally DGA (Dissolved Gas Analysis) is effective for the on-line diagnosis, and if abnormality is detected, FRA (Frequency Response Analysis) is effective for the off-line diagnosis to localize the failed part. FRA diagnosis detects the slight change of waveforms, however external factors may influence the results. Here, we discuss the influence of an insulating oil presence, tap position, and measurement lead wire length as possible parameters to influence FRA characteristics. It was confirmed that the measurement parameters examined here greatly influence the FRA characteristics. In the actual diagnosis, it is important to remove these external parameters as much as possible, and keep a detailed record of the measurement parameters.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.131 No.10 （2011） 特集：液体中の放電と基礎現象および液体応用技術

本誌掲載ページ: 811-816 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/ieejfms/131/10/131_10_811/_article/-char/ja/