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The dynamic model of variable speed hydro-turbine plant is proposed for controller design. The classical dynamic model of hydro-turbine plant includes a typical reverse response model. Then the response speed of the plant output is strictly limited in order not to respond reversely or oscillatory. In case of the variable speed hydro-turbine plant, faster response speed should be possible since the plant consists of winding-type synchronous generator whose output can be controlled by the excitation control. The proposed model is to design controller and analyze the plant dynamics. The model includes winding-type synchronous generator model and hydro-power plant water columnturbine characteristic model. The simulations by the model suggest that the reverse response problem can be avoided without serious water pressure rise and achieve much faster output power response.

The Variable Speed Hydro-turbine Generation Plant Dynamic Model for Controller Design