Impact of the Unbalanced Magnetic Pull on the Shafting Vibration of Hydro Turbine Generating Sets

Yan Yan Zeng; Yun Zeng; Zhe Wu; Shi Ge Yu

doi:10.4028/www.scientific.net/AMM.644-650.406

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 644-650Impact of the Unbalanced Magnetic Pull on the...

Impact of the Unbalanced Magnetic Pull on the Shafting Vibration of Hydro Turbine Generating Sets

Abstract:

The unbalanced magnetic pull (UMP) of hydro turbine generating sets (HTGS) is one of the main reason induced vibration of the HTGS and the power plant. To study the effects of UMP on the shaft vibration characteristics of HTGS, this article constructs whole HTGS system which include hydraulic turbine and its hydraulic system, generator, transient model of the HTGS shafting, excitation and governing system, to simulate the actual operation of HTGS. The shafting vibration is simulated under different characteristics of UMP, simulation shows that the frequency resonance zone of the UMP has large influence on the shafting vibration. And then, the improved Prony algorithm is applied to extract the shafting oscillation characteristics of HTGS, and is effective. It provides a good method to research the effect of frequency and amplitude changes of UMP on the shafting vibration.

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Periodical:

Applied Mechanics and Materials (Volumes 644-650)

Pages:

406-411

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.644-650.406

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Cite this paper

Online since:

September 2014

Authors:

Yan Yan Zeng*, Yun Zeng, Zhe Wu, Shi Ge Yu

Keywords:

Hydro Turbine Generating Sets (HTGS), Prony Algorithm, Shafting Vibration, Unbalanced Magnetic Pull (UMP), Vibration Characteristics

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* - Corresponding Author

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