Optimal directional overcurrent relay coordination using MRFO algorithm: A case study of adaptive protection of the distribution network of the Hatay province of Turkey

• Published in: Electric power systems research 2021-03, Vol.192, p.106998, Article 106998
• Main Authors: Akdag, Ozan, Yeroglu, Celaleddin
• Format: Article
• Language: English
• Subjects: Adaptive algorithms; Adaptive protection; Coordination; Directional over current relays; Distributed generation; Electric currents; Electric power distribution; Electric power generation; Electricity distribution; Optimization; Optimization algorithms; Overcurrent; Power supply; Relay; Wind energy
• ISSN: 0378-7796; 1873-2046
• DOI: 10.1016/j.epsr.2020.106998

•New objective function in DOCRs coordination problem.•Manta ray foraging optimization.•DOCRs coordination with optimization algorithms.•Adaptive protection structure. Coordination of Directional Over Current Relays (DOCR) is an important issue in the protection of power systems. In this paper, the object function of DOCR has been modified for better coordination. Manta Ray Foraging Optimization (MRFO) algorithm is adapted to the DOCR with the modified object function to maintain optimum relay coordination by preserving the relay coordination margin between the relay pairs. In order to show the success of the proposed technique, the algorithm has been applied to the 9-bus and 15-bus test system. The obtained results have been compared to other algorithms in the literature. Further, an adaptive protection structure, which provides optimum coordination of DOCR with MRFO algorithm according to changing power system conditions, has been proposed for a network that include Distributed Generation (DG) power plant. The proposed adaptive protection structure has been applied to the virtual model of a cross-section of 10 bus distribution networks that includes a Wind Powered DG (WP-DG) in the Hatay province of Turkey.