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Proceedings Paper

Fault diagnosis for stator winding bar hollow strand blockage of turbogenerators based on data fusion
Author(s): Xianpei Wang; Zheng Y. Dai; Zhenxing Liu; Yalin Chen
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Paper Abstract

Stator Winding Bar Hollow Strand Blockage (SWBHSB) is one of the main faults for large turbo-generators with water and hydrogen cooling system. It will lead to increasing water temperature at the bar exit which may cause hidden troubles for turbo-generator's security. According to a three-layer-structural model of data fusion, this paper presents a fault diagnosis method for turbo-generators based on data fusion technology. Firstly, a bp network on pixel level fusion is set up, in which several temperature parameters at the bar exit are accurately computed. Then in feature level fusion, the fingerprints are distilled from the result of pixel level fusion. Finally, decision level fusion gives a fault diagnosis for the measuring channels and thermometric components. This method can effectively avoid problems such as misinformation and fake report.

Paper Details

Date Published: 2 September 2003
PDF: 3 pages
Proc. SPIE 5253, Fifth International Symposium on Instrumentation and Control Technology, (2 September 2003); doi: 10.1117/12.522346
Show Author Affiliations
Xianpei Wang, Wuhan Univ. (China)
Zheng Y. Dai, Wuhan Univ. (China)
Zhenxing Liu, Huazhong Univ. of Science and Technology (China)
Yalin Chen, Wuhan Univ. (China)

Published in SPIE Proceedings Vol. 5253:
Fifth International Symposium on Instrumentation and Control Technology
Guangjun Zhang; Huijie Zhao; Zhongyu Wang, Editor(s)

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