The Investigation of Fuzzy Logic-PI Based Load Frequency Control of Keban HEPP

Abstract

In this study the frequency changes and stability of Keban Hydroelectric Power Plant-interconnected to the power system with eight synchronous generators-with respect to a possible load change in the power system are examined. While the power systems are fulfilling the requested power, keeping the frequency constant is an important requirement. Thus in order to keep the system stable in frequency due to a possible change in power request, a Fuzzy-logic based PI controller (FPI), which can keep its durability even for the cases facing parameter changes for the system, is proposed in this study. The design of this new system was performed in Matlab/Simulink Software and the performance results were compared with the results achieved through a classical PI controller. The model of the Keban Hydroelectric Power Plant  based on the catalog values of the active speed regulators, turbine and generators is constructed to simulate the system.