周波数応答解析（FRA）による変圧器巻線異常判定基準の提案―詳細診断における軽微な巻線異常判定―

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: 2016/07/01

タイトル(英語): Diagnosis Criterion of Abnormality of Transformer Winding by Frequency Response Analysis (FRA)―Detailed Diagnosis of Slight Abnormality―

著者名: 宮嵜　悟（（一財）電力中央研究所），水谷　嘉伸（（一財）電力中央研究所），田口　彰（九州電力（株）），村上　純一（東北電力（株）），辻　直一（中国電力（株）），高島　雅弘（四国電力（株）），加藤　理（電源開発（株））

著者名(英語): Satoru Miyazaki (Central Research Insititute of Electric Power Industry), Yoshinobu Mizutani (Central Research Insititute of Electric Power Industry), Akira Taguchi (Kyushu Electric Power Co., Inc), Junichi Murakami (Tohoku Electric Power Co., Inc), Naokazu Tsuji (Chugoku Electric Power Co., Inc), Masahiro Takashima (Shikoku Electric Power Co., Inc), Osamu Kato (Electric Power Development Co., Ltd.)

キーワード: 電力用変圧器，巻線異常診断，判定基準，周波数応答解析　　power transformer，diagnosis of abnormality of winding，criterion，frequency response analysis

要約(英語): Frequency Response Analysis (FRA) is a powerful technique to detect internal abnormalities within power transformers. However, diagnosis criteria of power transformers by FRA have not been fully established yet. In this paper, a new evaluation method of degree of identification between two transfer functions is proposed. In the proposed method, a frequency window is employed and Cross Correlation Coefficient (CCF) is calculated with moving the window. Furthermore, the proposed method is applied to transfer functions of real transformers with or without some abnormalities. Based on this discussion, objective criteria for diagnosis of abnormalities of transformer windings by FRA is proposed. The proposed criteria are based on a few data of transformers with some abnormalities. Therefore the proposed criteria are tentative and they would be improved by accumulation of further data.

本誌: 電気学会論文誌B（電力・エネルギー部門誌） Vol.136 No.7 （2016）

本誌掲載ページ: 645-653 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/136/7/136_645/_article/-char/ja/