摘要：This paper concerns the analysis of performance of static thyristor excitation and voltage regulation control systems of a high-power synchronous generator in asymmetrical operating states.Presented results were obtained from the model that reflects instantaneous processes both in the grid and in the excitation and voltage control system.The model of the synchronous generator includes the components of transformation.The rectifier model is based on a detailed thyristor model in the circuit of three-phase six-pulse thyristor converter,instead of simplified block model with defined external characteristics,as it is usual.It enables to monitor instantaneous values of rectifier voltages.The input signals for the voltage regulator model are not derived from the generator model the control system model includes digital measurement units of generator signals.The described model enables precise analysis of a synchronous generator with an excitation and voltage control system during disturbances and asymmetric operation in the grid.Such modelling is essential for analysis of novel solutions of excitation systems with digital controllers.This kind of analysis is not feasible using simplified models based on mean signals values and external characteristics of excitation systems.
