Hybrid Fault Diagnosis Method Based on Mechanical-Electrical Intersectional Characteristics for Generators

Yu-Ling He and Yue-Xin Sun

A chapter in Fault Detection and Diagnosis from IntechOpen

Abstract: In this chapter, a new hybrid fault diagnosis method based on the mechanical-electrical intersectional characteristics for turbo-generators is proposed. Different from other studies, this method not only employs the rotor vibration characteristics but also uses the stator vibration features and the circulating current properties inside the parallel branches of the same phase. Detailed theoretical analysis, as well as the experimental verification study, is carried out to demonstrate the proposed method. It is shown that in the proposed criterion for the method, the combining faulty characteristics for the single rotor eccentricity fault, the single rotor interturn short circuit fault, and the composite fault composed of the rotor eccentricity and the rotor interturn short circuit are all unique. The running conditions can be accurately and quickly identified by the proposed method. The work proposed in this chapter offers a new thought for the condition monitoring and the fault diagnosis of generators.

Keywords: turbo-generator; rotor eccentricity; rotor interturn short circuit; mechanical-electrical intersectional characteristics (search for similar items in EconPapers)
JEL-codes: C60 (search for similar items in EconPapers)
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Persistent link: https://EconPapers.repec.org/RePEc:ito:pchaps:157884

DOI: 10.5772/intechopen.79955

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