Exploring IED data management and IEC 61850 features to introduce a condition based maintenance approach in the Portuguese DSO

Abstract

From many years, protection systems play a crucial role in power substations of electrical grids worldwide. Due to the criticality of those systems, it is highly recommended to keep them working with high availability and accuracy, which implies the adoption of an adequate maintenance policy. This paper aims to present the Portuguese DSO (Distribution System Operator) EDP Distribuição (EDPD) reality and experience in maintaining in-service Protection System units, on the one hand, focusing on the actual maintenance strategy approach and possible future changes, in order to provide highest levels of service and security within the electrical system, and, on the other hand, considering a strict alignment with operational and economic efficiency as these are an ever-increasing concern for every utility company.