TITLE:
Study of the Impact of Grid Disconnections on the Production of a Photovoltaic Solar Power Plant: Case of Diamniadio Power Plant
AUTHORS:
Amadou Ndiaye, Mohamed Cherif Aidara, Amy Mbaye, Mamadou Lamine Ndiaye
KEYWORDS:
Photovoltaic Power Plant, Disconnections, Network, Evaluation, Lost En-ergy
JOURNAL NAME:
Journal of Power and Energy Engineering,
Vol.11 No.6,
June
19,
2023
ABSTRACT: Today,
renewable energy projects connected to the interconnected network, with powers
of the order of tens of megawatts, are more and more numerous in sub-Saharan Africa. And financing these
investments requires a reliable amortization schedule. In the context of
photovoltaic systems connected to the
interconnected electricity grid, the quintessence of damping is the amount of energy injected into the grid. Thus it is fundamental to know the
parameters of this network and their variation. This paper presents an
evaluation of the impact of power grid disturbances on the performance of a
solar PV plant under real conditions. The CICAD photovoltaic solar plant,
connected to the Senelec distribution
network, with an installed capacity of 2 MWp is the study setting. An
energy audit of the plant is carried out. Then the percentage of each loss is
determined: voltage drops, module degradation, inverter efficiency. The
duration of each disconnection is measured and recorded daily. The
corresponding quantity of lost energy is thus calculated from meteorological
data (irradiation, temperature, wind speed, illumination) recorded by the
measurement unit in one-minute steps. The observation period is three months.
The total duration of disconnections related to the instability of the electrical network during the study period is 46.7
hours. The amount of energy lost is estimated at 22.6 MWh. This
represents 2.4% of the actual calculated production.