A Bio-Inspired Rooted Tree Algorithm for Optimal Coordination of Overcurrent Relays

Abstract

The Protective coordination or harmonization of overcurrent relays in power system shows a significant role in protecting the electrical distribution system with the help of primary and secondary protection system. The coordination among these relays must be retained at an optimal rate to reduce the overall operational time and assure that minimum power outages and damages are produced during the fault condition. It is also important to assure that the relay settings should not generate an unpremeditated action and uninterrupted sympathy excursions. This paper describes a New Rooted Tree optimization algorithm (RTO) for optimum coordination of overcurrent relays inspired by the random movement of roots for searching the global optimum. The suggested optimization technique intentions to reduce the time multiplier settings (TMS) of the relays which are the basis of the coordination survey. The performance of the suggested RTO algorithm is tested on different systems. The results achieved by the RTO algorithm are related by further evolutionary optimization methods and it has been originating that the RTO method offers the utmost satisfaction and better clarification. Matlab computer programming has been generated to see the efficiency of the suggested technique