Title: Design of fractional order proportional integral controller for load frequency control of multi area power system under deregulated environment

Authors: Kurakula Vimala Kumar; V. Ganesh

Addresses: Jawaharlal Nehru Technological University Ananthapur, Andhra Pradesh, 515002, India ' JNTUA College of Engineering Pulivendula, Pulivendula, Andhra Pradesh 516390, India

Abstract: The main objective of presented article is here to focus how efficiently minimise the deviations in frequency and area control error caused by load fluctuations and uncertainties in load under the deregulated power system. This work is carried out to eliminate the frequency errors by using fractional order proportional integral (FOPI) controller under deregulated environment by considering the effect of one possible bilateral contract scenario. Because of system nonlinearities, uncertainties and continuously fluctuant load demand the design of these controllers is quite complicated in deregulated environment. The proposed work is to enhance the system parameters like transmitted line power, frequency deviation error, and area control error (ACE) using fractional order PI controller for hydro-thermal system and thermal-thermal system under deregulated environment. The results have been analysed with classical integer order PI controller and FOPI controller. It is observed that the efficacy of the results is satisfied and improved when compared with previous work.

Keywords: LFC; AGC; PI controller; FOPI controller; integer order PI controller.

DOI: 10.1504/IJPEC.2020.107942

International Journal of Power and Energy Conversion, 2020 Vol.11 No.3, pp.223 - 247

Received: 18 Jun 2018
Accepted: 28 Sep 2018
Published online: 01 Jul 2020 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article