Analysis of War Optimization Algorithm in a Multi-Loop Power System Based on Directional Overcurrent Relays

Bakht Muhammad Khan, Abdul Wadood (), Shahbaz Khan, Husan Ali, Tahir Khurshaid (), Asim Iqbal and Ki Chai Kim
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Bakht Muhammad Khan: Department of Electrical Engineering, Aerospace and Aviation Campus Kamra, Air University, Islamabad 44000, Pakistan
Abdul Wadood: Department of Electrical Engineering, Aerospace and Aviation Campus Kamra, Air University, Islamabad 44000, Pakistan
Shahbaz Khan: Department of Electrical Engineering, Aerospace and Aviation Campus Kamra, Air University, Islamabad 44000, Pakistan
Husan Ali: Department of Electrical Engineering, Aerospace and Aviation Campus Kamra, Air University, Islamabad 44000, Pakistan
Tahir Khurshaid: Department of Electrical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea
Asim Iqbal: Department of Electrical Engineering, Aerospace and Aviation Campus Kamra, Air University, Islamabad 44000, Pakistan
Ki Chai Kim: Department of Electrical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea

Energies, 2024, vol. 17, issue 22, 1-21

Abstract: In electrical power systems, ensuring a reliable, precise, and efficient relay strategy is crucial for safe and trustworthy operation, especially in multi-loop distribution systems. Overcurrent relays (OCRs) have emerged as effective solutions for these challenges. This study focuses on optimizing the coordination of OCRs to minimize the overall operational time of main relays, thereby reducing power outages. The optimization problem is addressed by adjusting the time multiplier setting (TMS) using the War Strategy Optimization (WSO) algorithm, which efficiently solves this constrained problem. This algorithm mimics ancient warfare strategies of attack and defense to solve complex optimization problems efficiently. The results show that WSO provides superior performance in minimizing total operating time and achieving global optimum solutions with reduced computational effort, outperforming traditional optimization methods (i.e., SM, HPSO, GA, RTO, and JAYA). The proposed algorithm shows a net time gains of 7.77 s, 2.57 s, and 0.8484 s when compared to GA, RTO, and JAYA respectively. This robust protection coordination ensures better reliability and efficiency in multi-loop power systems.

Keywords: directional over current relay; optimization; time multiplier setting; protection coordination; multi-loop power system (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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