Load Point Reliability Study of 33kV Feeders in Central Part of Edo State, Nigeria

Abstract

Reliability is the chance that a given desirable event will occur at the
very time it is required and expected to occur. The power system is
expected to supply power continuously to the customers for their
socio-economic purposes. The inability of the power system in
Nigeria to meet up this requirement prompted a lot of scholars to
embark on a reliability study of the system. However, the outage data
used were found to only focus on forced outages thereby neglecting
other unforced events in their works. In this study, all the outages on
the 33kV feeders in the Irrua Transmission station were used to
assess the performances of the system from 2015 to 2018 using the
load point indices. The result showed that the failure rate is on the
high side and the system reliability is depreciating with time. To turn
things out for the better, it was suggested that PV cells should be
introduced at strategic locations within the network. The
introduction of reliability-centered maintenance techniques by the
management could also go a long way in bringing about better
performance. This study will help the management to appraise their
performance which in turn will motivate them to do better.