Optimal coordination of directional overcurrent relays operating as backup protection in electrical power system

摘要

The coordination of the protection relays in electric power systems is one of the most important and expensive tasks because a bad operation by discoordination and the amount of data that needs to be process can impact the system. In this article, an optimal coordination of directional overcurrent relays of six-bar electric power system is realized; various case studies are analyzed in which the operation of the relays are adjusted so that they operate as backup protection of the main distance protections, using a genetic algorithm.