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ABSTRACT
This paper proposes a novel control mechanism for the reliable and stable operation of isolated microgrid (MG) systems, which face higher operational complexity due to the involvement of intermittent and uncertain renewable energy sources. The proposed control approach is based on a scaling factor-based fuzzy proportional-integral-derivative with filter-(one plus integral) controller designed using the Prairie dog optimization algorithm. The MG system comprises a biodiesel engine generator, solar photovoltaics, wind turbine generator as distributed generation unit, ultra-capacitor, and flywheel are included as energy storage systems. The performance of the proposed controller is examined with other state-of-the-art control approaches in various real-time scenarios. In addition, the effectiveness of the controller during the integration of electric vehicles (EVs) into the MG has been analyzed. Furthermore, the efficacy of the proposed approach has been confirmed by testing various scenarios for robustness analysis. The results indicate that the proposed controller outperforms other approaches and achieves minimum settling time (10.25 s), undershoot (0.0037 Hz), and overshoot (0.0006 Hz) after the integration of EVs. Overall, the proposed control approach demonstrates its effectiveness to sustain the robust operation of autonomous microgrid system.
Disclosure statement
No potential conflict of interest was reported by the authors.
Additional information
Notes on contributors
Pradeep Kumar
Pradeep Kumar received his B.E. degree in Electrical Engg. from Maharshi Dayanand University, Rohtak, India and M.Tech degree in Electrical Engg. from Deenbandhu Chhotu Ram University of Science and Technology, Murthal, Sonepat, India. He is presently Ph.D. research scholar in Department of Electrical Engg., Deenbandu Chhotu Ram University of Science and Technology, Murthal, Sonepat, India.
Rajneesh Pawar
Rajneesh Pawar received his B.E. and M.E. degree in Electrical Engg. from C.R. State college of Engg., Murthal, Sonepat, India. He was awarded his Ph.D. degree in Electrical Engg., by Deenbhandu Chhotu Ram University of Science and Technology, Murthal, Sonepat, India. He is presently Assistant Professor in Department of Electrical Engg., Deenbandhu Chhotu Ram University of science and Technology, Murthal, Sonepat, India.