Maintainability Assessment Of 11kv Feeders In Benin City, Edo State, Nigeria

Abstract

Nigeria’s power supply has been experiencing incessant interruptions due to failures in the distribution system. The maintainability of the power system is important in meeting customers demand. The maintainability of three 11kv feeder in Benin Electricity Distribution Company (BEDC), Edo State Nigeria is evaluated in this study. the failure data which includes; time of failure, time outage was restored, causes of failure, and the outage duration(also known as ‘repair time’) from the Injection substations of the three feeders for the year, 2020 and 2021 was collated and used . Monthly and Yearly Mean time to repair (MTTR) and repair rate were calculated for the analysis. The analysis results revealed that the year 2021 had the accumulated higher MTTR than 2020 for the feeders as a result of decline in response to faults except in the Ihama Feeder that had a decrease in MTTR for the year 2021 which implies that there was improvement in response to faults