A Robust Fuzzy Logic Controller Design for Load Frequency Control of Hydro Thermal Power Generating Stations
Anurekha Nayak1, Manoj Kumar Maharana2

1Anurekha Nayak*, School of Electrical Engineering, KIIT Deemed to be University, Bhubaneswar, India.
2Dr. Manoj Kumar Maharana, Associate Professor, School of Electrical Engineering, KIIT Deemed to be University, Bhubaneswar, India.
Manuscript received on January 12, 2020. | Revised Manuscript received on January 22, 2020. | Manuscript published on February 10, 2020. | PP: 997-1002 | Volume-9 Issue-4, February 2020. | Retrieval Number: C8945019320/2020©BEIESP | DOI: 10.35940/ijitee.C8945.029420
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: This article analyses the contribution of Fuzzy logic controller in a two source two area hydro thermal system aimed at load frequency control of the system. The proposed two area two source hydro thermal system is observed for different system parameter change to realize the dynamic behavior of frequency along with the interchanged power through tie line. To begin with, hydro and thermal power plants in a single control area for a step load variation is reviewed and the results for PI along with fuzzy logic controller are compared. Additionally a two source two area system is considered and the frequency and tie line power deviation with fuzzy logic controller is matched with results of PI controller. To witness the superiority of fuzzy logic controller, the connected generating system is run for different system parameter change. Simulation outcomes revealed that the recommended fuzzy logic controller put in enhanced output response when compared with conventional PI controller. The offsets found with the conventional controller can be estimably fell off with the suggested fuzzy logic controller. 
Keywords: Fuzzy Logic Controller (FLC), Load Frequency Control (LFC), PI controller, Two source two area system (TSTA)
Scope of the Article: Fuzzy Logic