NDLI: Vibration measurement of the generator stator end windings and precautions against insulation wearing

Content Provider	IEEE Xplore Digital Library
Author	Zhang Jianzhong Jiang Xinghua You Zeyuan
Copyright Year	1998
Description	Author affiliation: Hebei Electr. Power Testing & Res. Inst., Shijiazhuang, China (Zhang Jianzhong)
Abstract	In this paper, detailed stress analysis and calculations on generator stator bars are presented. It points out that the electromagnetic force applied on the stator winding is confirmed as a 100 Hz alternative force. When the intrinsic frequency of the stator bars is equal or is close to 100 Hz, resonance of stator bars will occur. This resonance will cause serious damage to stator insulation. For serious vibrating conditions, this can lead to generator accidents such as internal short circuits or broken stator bars. Examples of stator end winding accidents which are caused by resonance frequency at 100 Hz are also presented and analyzed in the paper. A measuring method of stator bars intrinsic resonance frequency at 100 Hz is also introduced.
Starting Page	1021
Ending Page	1024
File Size	389512
Page Count	4
File Format	PDF
ISBN	0780347544
DOI	10.1109/ICPST.1998.729239
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1998-08-18
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Vibration measurement Stator windings Stator bars Resonance Accidents Resonant frequency Stress Electromagnetic forces Insulation Circuits
Content Type	Text
Resource Type	Article

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