OVERLAPPING OF IMBALANCES OF GENERATED AND FORECAST ELECTRICITY BY SOLAR POWER PLANT AT THE EXPENSE OF THE ELECTRICITY ACCUMULATION SYSTEM
Solar photovoltaics is developing rapidly, which leads to the emergence of new important engineering and scientific and applied problems, the solution of which is a key factor in the sustainable development not only of this sector of renewable energy, but also the entire power grid of Ukraine. One of such tasks is to increase the reliability of electricity generation by a photovoltaic power plant and its delivery to the network in accordance with the provided forecast for the day and separately for two hours in advance. The issue of stable generation is relevant not only for network photovoltaic power plants, but also for photovoltaic power plants that work to partially cover their own consumption, when it is important to meet the consumption schedule so as not to disrupt production processes. One of the options for solving this problem is the integration of various systems of electric energy storage into the photovoltaic power plant, including electrochemical batteries, which was investigated in this paper. Based on the analysis of real data on electricity generation during March 2020 by network photovoltaic power plants located in the Kherson region, the limits of non-compliance of the generated electricity with the stated forecast were determined. The relative values of the required capacity of electrochemical batteries to ensure maximum compliance with the stated forecast. The calculation was based on the method of finding discrepancies between the approximated model and the real data, followed by the calculation of the deviation for each time point.
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