Comparative Study on Load Frequency Control of a Single Microgrid Coupled with Thermal Power Plant Using Fuzzy and PID Controllers

In this paper, thermal power plant is connected to a microgrid and frequency deviation is observed and the results of the fuzzy and PID controllers are compared with fuzzy and the best controller giving best results is considered. Also, the different parameters are taken care for maintaining stability of the system like area control error (ACE) of individual areas, load demand, etc. This paper focuses on reducing error in quick time that developed due to mismatch between generation and demand. Because if error is not minimized in quick time, then stability of the system is affected and also the power flow through the tie-lines is not uniform. Software used is MATLAB 2014b. Results are shown and compared using necessary graphs. The Simulink model is prepared by selecting the transfer function blocks from the library and assigning the values to them. PID controller is used to minimize the error in quick time. Also, PID controller is replaced with fuzzy PID controller.