Modeling Of An Stand Alone Photovoltaic Solar Power Plant 120kw, Case Of Mahavelona (Rural Area)

Abstract

Madagascar's economic situation is linked to the productivity of the rural population, which constitutes 80% of the population. One of the obstacles that hinders their growth is the lack of a sustainable source of energy. The exploitation of solar energy that Madagascar has enormously more than 2800h / year of sunshine will certainly contribute to the socio-economic development of the population. Our study area is located in the rural commune of Mahavelona, district Soavinandriana. This work aims to have an optimized model of an autonomous power plant by photovoltaic solar system. The results obtained with this first will be duplicated at the four other sites which are still in the same district. Its concretization requires passing through holistic studies in a photovoltaic production plant and heuristic studies on the modeling of the inclination and its effect on electricity production. Precised and repeated measurements on the installation site were done for the development of the database necessary for this research. Measurements at four angles of inclination 15°, 20°, 25° and 30° using a pyranometer were carried out. The datas obtained were analyzed and simulated using MATLAB and Excel. The results showed that: first, the inclination and orientation of the solar panel must be precise and vary according to the season for optimal electricity production. The following inclinations must be respected: 15° for the month of September until the end of March and 30° from the month of April until the end of August. Compared to fixed tilt, this change in tilt angle will save 128 MWh during the contract period.