音響・電気信号ハイブリッド検出による運転中水車発電機の部分放電特性

概要

論文の詳細を見る
Establishment of condition based maintenance for hydrogenerator is very im portant for monitoring the insulation of stator windings. The partial discharge testing is a promising method of condition monitoring of hydrogenerator stator winding insulation. Therefore, the on-line partial discharge testing has been used to provide useful information to diagnose and monitor the integrity of stator winding insulation of many hydrogenerators. In this paper, We have developed a method for diagnosing the insulation deterioration of hydrogenerator stator windings by hybrid detection using acoustic and electrical measurement methods. Using this developed system, We measured the AE signals and leakage current on on-line hydrogenerator stator windings. Additionally, We investigated the relationship of the intensity and delay time of AE signal in each the AE sensor position for long term.
宮崎大学の論文
2007-08-30