Algoritmo auto-adaptativo para proteção de sobrecorrente instantânea.

Abstract

A self-adaptive technique that improves the instantaneous overcurrent relay settings determination an automatic task, without human intervention neither interruption on electric supply or grid monitoring is proposed. An architecture designed by three layers connected using a communication channel provides that modificationon power electric grid as connection/disconnection of transmissionlines, and/or on generator or load profiles will be automatically reflected on protective device settings. Load current has been used to determine the reach of instantaneous over current relay settings in a médium voltage distribution system considering cases with and without distributed generation connected on the grid. The possibility of online determination at Thevenin equivalent circuit low human interventions to execute coordination study. Obtained results demonstrate the viability of proposed technique an dincrease with state of art a bout improvements of smart electric grids.