Additional Mechanical Torque Coefficients of Hydro Turbine and Governor System

Yun Zeng; Li Xiang Zhang; Jing Qian; Ya Kun Guo; Tian Mao Xu

doi:10.4028/www.scientific.net/AMR.443-444.954

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 443-444Additional Mechanical Torque Coefficients of Hydro...

Additional Mechanical Torque Coefficients of Hydro Turbine and Governor System

Abstract:

The change of mechanical torque is usually ignored in small disturbance of power systems, which means that influences of the hydro turbine and governor system (HTGS) have been ignored. The disturbance characteristics of the hydro turbine generating units including the HTGS is studied based on torque coefficients method in this paper, and calculating method and expressions of torque coefficients of the HTGS are given. The additional mechanical damping produced by the HTGS can be expressed as D_tΔω, therefore, it can be merged into the damping item in the motion equation of generator, that means that its action is equivalent to modify damping coefficient D. Using a case, the analysis and calculation method are introduced, and several conclusions are given.

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Advanced Materials Research (Volumes 443-444)

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954-961

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https://doi.org/10.4028/www.scientific.net/AMR.443-444.954

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January 2012

Authors:

Yun Zeng, Li Xiang Zhang, Jing Qian, Ya Kun Guo, Tian Mao Xu

Keywords:

Governor System, Hydro Turbine, Oscillation, Torque Coefficient

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