Modelling of a Nonlinear Swing Equation for a Non-salient Pole Rotor Synchronous Generator

The simplification through linearization and neglecting damping power in the swing equation for a non-salient two-pole rotor degrades the accuracy and performance of the model. Thus, this paper presents the modelling of a nonlinear swing equation for a non-salient two-pole rotor of a synchronous generator via the direct phase method without neglecting the damping power. The functionality of the modelling is verified by comparing the obtained rotor angle graph via simulation in MATLAB/SIMULINK to the one obtained by a benchmarking paper. The simulation of the model proves that disturbance occurrences will perturb the rotor angle stability and might as well cause the rotor angle to operate at a new operating angle. Verification of this model allows it to be used in future studies of rotor angle stability analysis and enhancement.