Fault diagnosis for stator winding bar hollow strand blockage of turbogenerators based on data fusion

Xianpei Wang; Zheng Y. Dai; Zhenxing Liu; Yalin Chen

doi:10.1117/12.522346

2 September 2003 Fault diagnosis for stator winding bar hollow strand blockage of turbogenerators based on data fusion

Xianpei Wang, Zheng Y. Dai, Zhenxing Liu, Yalin Chen

Proceedings Volume 5253, Fifth International Symposium on Instrumentation and Control Technology; (2003) https://doi.org/10.1117/12.522346
Event: Fifth International Symposium on Instrumentation and Control Technology, 2003, Beijing, China

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.

Citation Download Citation

Xianpei Wang, Zheng Y. Dai, Zhenxing Liu, and Yalin Chen "Fault diagnosis for stator winding bar hollow strand blockage of turbogenerators based on data fusion", Proc. SPIE 5253, Fifth International Symposium on Instrumentation and Control Technology, (2 September 2003); https://doi.org/10.1117/12.522346

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