Vol. 181, Issue 10, October 2014, pp. 60-65

Abstract: Established a mathematical model of a 600 MW steam turbine speed governor system based on practical data. The frequency domain analysis indicates that different regulator parameters of turbine governor have different influences on the damping characteristics of the power system. If the regulator parameters are improper, they can cause the low frequency oscillation of the Grid. Through the analysis of the mechanical damping torque coefficient under the various combinations of the regulator parameters, this paper gives the qualitative trends of the system damping when the control parameters change. Through the analysis of stability of the system, this paper gives the range of the proper regulator parameters. And bring forward a setting method of the steam turbine regulator parameters based on the power system stability.

Keywords: Steam turbine, Speed governor system, Regulator parameters, Power system, Damping characteristics.

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