Development and Verification of the Power System Mathematical Model for the Analysis of Generator Frequency Control Strategy

One of the key processes in the operational dispatch control of electrical power systems is the regulation of the generator mode parameters, in particular the regulation of its frequency. This article considers the process of General Primary Frequency Control (GPFC), which aims to reduce the deviation of the parameters from the reference value. There is a problem in the process of GPFC: when the frequency regulation in the power system is performed by several power plants with different types of regulators, in certain emergency situations there is an incorrect regulation accompanied by undamped frequency fluctuations. This situation is particularly aggravated when the controller settings are set according to the State Standard. Adjustment of regulated parameters of regulators does not provide quality of regulation in all situations of schematic mode, which causes necessity to neglect requirements of normative acts. This reason makes it necessary to create a mathematical model of the power system with the possibility of programmatically changing the types of regulators at the modeled power stations and correcting their parameters. This will allow the detailed study of the HDR process and its transients. The verification of the model has been carried out using the initial data of a real accident that occurred in the power system N. In the future, improved algorithms for generator frequency control will be developed on the basis of this model.