Performance Analysis and Assessment of Ihovbor Power Plant, Edo State, Nigeria

Abstract

This paper presents the analysis of Key Performance Indicators carried out on four (4) Gas Turbine Generators at Ihovbor Power Plant, Benin City, Edo State for a period of four (4) years (2019 -2022). The study was done through an exhaustive collection of data from operational records and plant data sheets recorded by operators in the power station. This investigation used the NERC/IEEE std 762 generator performance indices amongst other calculated Key Performance indices in the evaluations and analysis of the collected data. The result of the analysis reveals that the overall availability factor (Equipment availability factor and Energy Availability factor) for the individual years were 53.49, 50.00, 58.33 and 56.48 respectively for Equipment Availability factor and 21.65, 6.13, 4.44 and 15.72 respectively for Energy Availability factor which is against industry best practices of 80 – 99%. Also, the capacity factors for the individual years are 17.75, 4.75, 3.78 and 13.30 respectively which is against industry best practices of 50 – 80%. Also, the results reflects a low overall average MTBF for the individual units which are 70.67, 70.66, 49.08 and 9.65 respectively and a high overall average MTTR for the individual units which are 202.14, 146.10, 488.47 and 670.52 respectively. The shortfall in performance levels of the plant is attributable to low plant availability due to frequent unit breakdowns/failures, overdue maintenance outage of some units, inefficient preventive and predictive maintenance programs, instability of the national grid system, and inadequate supply of gas among others. Measures to improve the performance indices of the plant were suggested.