Wind Resource Assessment in the City of N'djamena in Chad

Abstract

The aim of this study is to evaluate the wind energy potential of the city of N'Djamena, and to evaluate of the annual energy produced at an altitude of 100 m by simulating wind data using the wind speeds data collected at N'Djamena airport’s weather station for a twelve months period. In this perspective, we start with the description of the site through the determination of parameters related to the wind, the mathematical modeling of the frequency distribution of the wind: Weibull distribution and processing and numerical simulation of the actual wind data collected on a selected site of the city of N’Djamena. We then estimate its wind potential, the prediction of the electrical energy production and, determine the direction of the wind on the site. We conduct an analysis of wind turbulence considering different factors such as surrounding obstacles near the measurement tower of the airport in N'Djamena, topography, roughness of the site and choice of wind mill. As a result, the installation of a wind farm of 10 wind mill Vestas V80 / 1.8 MW at 100 meters would produce 50,420 MWh of energy.