用暂态电流评价大型同步旋转电机转子和定子绝缘系统的状态

Proceedings Electrical Insulation Conference and Electrical Manufacturing Expo, 2005. Pub Date : 1900-01-01 DOI:10.1109/EEIC.2005.1566262

C. Paynot, L. Lamarre, É. David, R. Taghizad

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引用次数: 11

摘要

为了评估绝缘系统的质量，本文报道了一些水力和涡轮同步旋转机械、电动机和发电机的转子和定子绕组在直流电压步进后发生短路后的瞬态电流测量结果。在现场对不同工艺产生不同时域响应的绕组进行了测量。除计算绝缘老化外，还检测了绝缘树脂的吸湿、端部污染和未完全固化(随后是后固化)等其他特征

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The use of transient current for the evaluation of the condition of rotor and stator insulation systems of large synchronous rotating machines

Results related to the measurement of transient currents recorded after a DC voltage step followed by a short-circuit are reported for both rotor and stator windings for a number of hydro and turbo synchronous rotating machines, motors and generators, in order to assess the quality of the insulating system. Measurements were conducted in the field for windings from different technology yielding different time domain response. Besides reckoning the aging of the insulation, other features such as moisture absorption, end-winding contamination and incomplete curing of the insulating resin (followed by post-curing) were detected in several cases

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Proceedings Electrical Insulation Conference and Electrical Manufacturing Expo, 2005.

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