ASSESSMENT OF JEBBA HYDROPOWER DAM OPERATION FORudIMPROVED ENERGY PRODUCTION AND FLOOD MANAGEMENT

摘要

One of the reservoir management options for flood moderation and energy production is the operation ofudHydropower Dams to protect people and their socio-economic activities in flood plain areas. This study focuses onudassessing Jebba Hydropower Dam Operation for improved energy production and flood management. Available Data forud27-year period (1984 - 2011) such as inflow, elevation, turbine release, generating head, energy generation, tailrace waterudlevel and plant coefficient was obtained from Jebba Dam Station. The present reservoir-operating rule was investigatedudusing statistical analysis to model the operation of the multi-purpose reservoir. Statistical tests carried out in accordanceudwith standard procedure include chi-square (χ2), probability plot coefficient of correlation (r), and coefficient ofuddetermination (R2). The results show that the optimal solution at operating performance of 50% reservoir inflow reliabilityudhas the total annual energy generation of 42105.63MWH with adequate water supply for downstream users and forudirrigation throughout the year with annual optimal evaporation losses averaged at 58.16Mm3. Average optimal energyudgeneration obtained is 19% of the observed energy generation but with adequate water supply for downstream users andudfor irrigation throughout the year. It is, therefore, essential to develop a decision-making framework capable of handlingudthe conflicting demands