ABSTRACT
Electricity is very important and crucial in the development of any economy; Niger State is currently experiencing serious electricity supply problem. This research assessed the potential for using wind energy for electric power supply in Minna, located on latitude 9° 36′ 50″N and longitude 6° 33′ 25″E. Five years wind speed data (2012 – 2016) of five minutes integration time was obtained from the atmospheric weather station of Physics Department, Federal University of Technology, Bosso campus, Minna, using Davis Vantage Pro 2 atmospheric measuring instrument and was converted to monthly and annual mean wind speeds. The monthly and annual mean wind speeds were extrapolated from values at 4 m to heights of 10 m, 30 m and 50 m above ground level. The Weibull 2-parameter Probability Distribution Function (PDF) and its corresponding Cumulative Distribution Function (CDF) were used in the analysis of the wind potential and the wind distribution pattern in Minna. The results of the study show that the annual average wind speed from 2012 to 2016 are respectively 1.35 ms-1 , 0.82 ms-1 , 0.91, ms-1 1.06 ms-1 and 0.74 ms-1 . Furthermore, the average wind speed for the various heights of 4 m to 10 m, 30 m and 50 m are respectively 0.98 ms-1 , 1.11 ms-1 , 1.30 ms-1 and 1.40 ms-1 . Annual wind speed for the PDF are respectively 1.10 ms-1 , 1.50 ms1 , 1.90 ms-1 and 2.30 ms-1 ; the annual cut-in wind speeds are also respectively 0.5 ms-1 , 0.7 ms-1 , 1.10 ms-1 and 1.30 ms-1 and the cut-out wind speed for all the heights is 4.7 ms-1 . The annual wind power densities are respectively 0.66 Wm-2 , 1.29 Wm-2 , 3.41 Wm-2 and 5.77 Wm-2 . Also, the annual wind energy resources assessments are respectively 0.02 kWhm-2 , 0.04 kWhm-2 , 0.14 kWhm-2 and 0.25 kWhm-2 . Thus, from the wind power density obtained, Minna is classified into class 1 of the PNL wind power classification and therefore not suitable for sustainable electricity generation by wind energy. Further study on assessment of wind energy potential in Minna and other parts of Niger State such as Bida, Suleja, Kontagora, especially rural areas with reduced cluster of building and trees is recommended, and for longer duration.
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