Kingsley E. Madu
Department of Mechanical Engineering, Chukwuemeka Odumegwu Ojukwu University, Uli, Anambra, Nigeria.
ABSTRACT
Electricity generation of any nation serves as an engine that drives an economy of such nation. Sufficient power supply is very crucial for industrial development and economic growth of any nation. Recent studies show that most of the hydro-electric generating stations in Nigeria are operating below their installed capacity which is as a result of non- overhauling of turbines installed at the hydro power plants. This study is aimed at providing an operational efficiency analysis of Kainji hydro-electric power plant for the reviewed period of time. The considered criteria were plant availability factor, capacity factor and the overall efficiency of the plant. The study has demonstrated that availability has a very major impact on power generation and plant economy. Specific guidelines for higher flexibility in operations through quality assurance procedures and maintenance for the power station was recommended from results output summaries in relation to peer power station units for sustainable power availability. Result shows reduction in plant availability is caused by increased number and duration of forced and maintenance outages as well as prolonged maintenance periods. The causes and durations of forced outages and unscheduled maintenances were identified through the study of outage causes. The investigations ensured quantified comparative analysis for planned and unplanned outages by using results to estimate unit generators’ performance. The study in a nutshell gives suggestions that could help improve power efficiency in Kainji and other hydropower plant stations in Nigeria.
Keywords: Power Efficiency, Operational Performance, Hydro-Electric Power, Electricity Generation, Plant Availability Factor, and Capacity Factor
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