The influence of the values of generating unit mathematical model parameters on selected transient waveforms in the Polish Power System

In the paper there are described measurement methods for parameter estimation of the mathematical models of component elements of generating units operating in the Polish Power System (PPS). When estimating the parameters of particular models, there were analysed, among others, the responses of the systems at load rejection and changes (step and random) of the reference voltage in the generator voltage regulation system. Moreover, based on simulation investigations, there is presented the influence of the mathematical model parameters (often assumed arbitrarily) on transient waveforms of different quantities, among others currents and voltages of the generating units, occurring under normal and emergency conditions of the PPS operation.