Optimal tuning of unified power flow controller using firefly algorithm to improve damping of inter-area oscillations in multi-machine system
Utami R.S.a, Abu-Siada A.b, Suwarnoa, Hariyanto N.a, Djalal M.R.c, Hartono J.d
a Institut Teknologi Bandung, School of Electrical Engineering and Informatics, Bandung, Indonesia
b Curtin University, Electrical and Computer Engineering Department, Perth, Australia
c Politeknik Negeri Ujung Pandang, Department of Energy Engineering, Makassar, Indonesia
d PT PLN Research Institute, Transmission and Distribution Department, Jakarta, Indonesia
Abstract
© 2020 IEEE.The interconnection system faces inter-area oscillation challenges that affect power system stability. Conventional Power System Stabilizer (PSS) cannot provide effective damping to the inter-area oscillations. This paper deals with a Proportional Integral (PI) controller as a damping control scheme of the Unified Power Flow Controller (UPFC) to improve the damping of inter-area oscillation in a multimachine system. The proposed PI Controller-based UPFC is tuned using the Firefly Algorithm (FA), and the performance is compared with PSS. Simulation results show that the proposed PI Controller-based UPFC provides a better stability margin than PSS under the different conditions and effectively reduces the overshoot by 53%, accelerating the settling time by 74%, and minimizing the area graph by 85%.
Author keywords
Conventional power system stabilizers,Firefly algorithms,Inter-area oscillations,Interconnection systems,Multimachine systems,Power system stability,Proportional integral controllers,Unified power flow controllers
Indexed keywords
Eigenvalue,Firefly algorithm,Inter-area oscillation,PI controller,UPFC
Funding details
ACKNOWLEDGMENT This paper is supported by PT Perusahaan Listrik Negara (Persero).