測温センサを用いた高周波帯域における水車発電機固定子の部分放電検出方法の検討

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: 2015/04/01

タイトル(英語): Partial Discharge Detection with High-Frequency Band through Resistance-Temperature Sensor of Hydro Power Generator Stator Windings

著者名: 金神　雅樹（（一財）電力中央研究所），宮嵜　悟（（一財）電力中央研究所），三宅　勝幸（中部電力（株））

著者名(英語): Masaki Kanegami (Central Research Institute of Electric Power Industry), Satoru Miyazaki (Central Research Institute of Electric Power Industry), Katsuyuki Miyake (Chubu Electric Power Company Incorporated)

キーワード: 発電機，固定子，部分放電，絶縁診断，連続ウェーブレット変換　　generator，stator，partial discharge，insulation diagnosis，continuous wavelet transform

要約(英語): In order to improve S/N ratio for partial discharge (PD) detection using a resistance-temperature detector laid in stator windings of hydro-power generator, continuous wavelet transform (CWT) is applied as a kind of time-frequency analysis. Relying on the combination of frequency resolution and time resolution using an applied power voltage phase angle distribution, PDs occurring in voids of stator windings are thought to be found within mixed environment of large noises and confusable noises. Furthermore, we found that CWT may make it possible to calibrate PD charge quantity in a few tens of MHz band under favorable conditions where the calibration is usually difficult for generator stator windings.

本誌: 電気学会論文誌B（電力・エネルギー部門誌） Vol.135 No.4 （2015）

本誌掲載ページ: 259-264 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/135/4/135_259/_article/-char/ja/