A Modular Simulation System For SynchronousGenerators Utilizing Simulink

Abstract

The synchronous generator is one of the most important components of a Power Plant. Then, it is necessary to be able to predict its dynamic or transient behaviour when it is submitted to any disturbance, such as: a sudden short circuit, load rejection, loss of excitation, etc. in order to evaluate the stability of the generator operating in a power system, synthesize the control algorithms for automatic voltage regulators, protect adequately the generator and to detect incipient faults. A modular simulation system for synchronous generator supported in SIMULINK is proposed. One of the most outstanding features of this proposal is the consideration of the complex nature of the generator rotor. Three different synchronous generator models are utilised: the so-called standard model, which neither considers the unequal mutual inductance of the rotor nor the turbogenerator solid rotor, the hydrogenerator model or the turbogenerator model. The simulation results demonstrate the necessity of considering the characteristics of the rotor.