Dynamic study of salient pole synchronous hydro generator - turbine set under variable excitation

The main objective is to study dynamic behavior of hydro generator at variable excitation. This paper presents analysis of the dynamic behavior of a hydroelectric power plant including hydraulic system, electrical installations, rotating inertia and control systems. First, the modeling of the electrical and hydraulic systems is described. The electrical system is constituted by a salient-pole synchronous generator with its excitation system standard model. Further, hydraulic system is comprised with hydro turbine and PID governor standard model. Effect of variable excitation on set of parameters of the turbine and generator of the hydroelectric power plant is also discussed.