MODELING AND DYNAMIC SIMULATION OF VARIABLE SPEED PUMP STORAGE UNITS INCORPORATED INTO THE GERMAN ELECTRIC POWER SYSTEM

Abstract

This paper deals with the modeling of variable speed pump storage power plant units equipped with double fed induction machine drives. The model is intended for use in a multi-machine simulation environment. The intention is to investigate the dynamic interaction between large variable speed units and the interconnected power system. First, a reduced order model of the double fed machine is developed. Based on this, a systematic multivariable controller design with dead-beat controller approach and terminal voltage compensation is carried out. The model is completed by voltage, power and speed controllers. Simulation results show the dynamic behavior of the new Goldisthal variable speed units in the German electrical power system.