An Approach of Insulation State On-line Monitoring and Fault Diagnosis for Generator and Its Application

Sun, Qingguo; Zhou, Zhengxin; Guo, Weiqin

doi:10.1109/appeec.2010.5448687

Cited by 1 publication

(1 citation statement)

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“…The angular speed changes of HTGS maybe induce larger vibration from some nonlinear factors existed in shafting, and give rise to damage of shafting stability. With the development of computational mechanics and simulation technology, based on the shafting structure model established with finite element method, many results, such as the calculation simulation [5,6], development and application combined with real-time state monitoring of shaft system [7], have been achieved. However, due to the structure complexity of actual shafting system and multi-field coupling existed in shafting and its support system [8][9][10][11][12], it is difficult to deal with multi-field coupling, or difficult to accurate simulate while the shafting model is built from finite element method.…”

Section: Introductionmentioning

confidence: 99%

Shafting Vibration Simulation for Hydro Turbine Generating Sets

Zeng

Zhang

Qian

et al. 2013

AMM

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Based on the transient model of hydro turbine generating sets (HTGS), the integrated simulation system of HGTS is built to study shafting stability. Given different bearing stiffness, equivalent damping coefficient and mass eccentricity, the change characteristics of shafting vibration at rated angular speed in steady and maximum angular speed in transient are simulated, and which are applied to study inferences shafting parameters and angular speed on shafting vibration. Simulation results show that the relationship between shafting vibration amplitude and angular speed is linear. however, the vibration amplitude increment produced by angular speed error will be amplified while the shafting stiffness is weaker, mass eccentricity of the runner and rotor is larger.

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