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Article

An Optimized Protection Coordination Scheme for the Optimal Coordination of Overcurrent Relays Using a Nature-Inspired Root Tree Algorithm

1
Department of Electrical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan, Gyeongsangbuk-do 38541, Korea
2
Department of Energy IT, Gachon University, Seongnam 461-701, Korea
*
Author to whom correspondence should be addressed.
Appl. Sci. 2018, 8(9), 1664; https://doi.org/10.3390/app8091664
Received: 13 August 2018 / Revised: 8 September 2018 / Accepted: 13 September 2018 / Published: 15 September 2018
(This article belongs to the Special Issue State-of-the-Art Renewable Energy in Korea)
In electrical engineering problems, bio- and nature-inspired optimization techniques are valuable ways to minimize or maximize an objective function. We use the root tree algorithm (RTO), inspired by the random movement of roots, to search for the global optimum, in order to best solve the problem of overcurrent relays (OCRs). It is a complex and highly linear constrained optimization problem. In this problem, we have one type of design variable, time multiplier settings (TMSs), for each relay in the circuit. The objective function is to minimize the total operating time of all the primary relays to avoid excessive interruptions. In this paper, three case studies have been considered. From the simulation results, it has been observed that the RTO with certain parameter settings operates better compared to the other up-to-date algorithms. View Full-Text
Keywords: nature-inspired optimization; root tree algorithm (RTO); time multiplier setting (TMS); overcurrent relay (OCR); protection scheme nature-inspired optimization; root tree algorithm (RTO); time multiplier setting (TMS); overcurrent relay (OCR); protection scheme
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MDPI and ACS Style

Wadood, A.; Gholami Farkoush, S.; Khurshaid, T.; Kim, C.-H.; Yu, J.; Geem, Z.W.; Rhee, S.-B. An Optimized Protection Coordination Scheme for the Optimal Coordination of Overcurrent Relays Using a Nature-Inspired Root Tree Algorithm. Appl. Sci. 2018, 8, 1664. https://doi.org/10.3390/app8091664

AMA Style

Wadood A, Gholami Farkoush S, Khurshaid T, Kim C-H, Yu J, Geem ZW, Rhee S-B. An Optimized Protection Coordination Scheme for the Optimal Coordination of Overcurrent Relays Using a Nature-Inspired Root Tree Algorithm. Applied Sciences. 2018; 8(9):1664. https://doi.org/10.3390/app8091664

Chicago/Turabian Style

Wadood, Abdul, Saeid Gholami Farkoush, Tahir Khurshaid, Chang-Hwan Kim, Jiangtao Yu, Zong W. Geem, and Sang-Bong Rhee. 2018. "An Optimized Protection Coordination Scheme for the Optimal Coordination of Overcurrent Relays Using a Nature-Inspired Root Tree Algorithm" Applied Sciences 8, no. 9: 1664. https://doi.org/10.3390/app8091664

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