Autonomous pumped storage hydropower
DOI:
https://doi.org/10.31548/energiya2(66).2023.116Abstract
One of the possible ways to solve the problem of accumulating the energy of a renewable source in an autonomous electric power system is its accumulation in the form of potential water energy and subsequent energy consumption according to a given consumption schedule. A pumped storage hydropower with solar panels allows to save energy from intermittent renewable energy sources (such as solar energy, wind energy and other), or sources based on mineral fuels (such as coal or nuclear energy) during periods of low consumption.
The paper presents the results of developing a mathematical model of an autonomous pumped storage hydropower in the Matlab/Simulink and describes its main elements. Model allows determining the dynamics of energy flows and water balances in the reservoirs during the day for a given time of the year. The model was created for the purpose of researching the parameters and characteristics of the nodes of the pumped storage hydropower with solar panels. As a result of the analysis of its model, it was established that the level of supply of electricity to the consumer during the day is 100%. The difference in time between the produced and consumed electricity is fully compensated by the hydro-accumulating plant and at the end of the day in the summer period there is an increase in the water level of about 0.2%. The water balance in the upper and lower reservoirs was calculated and the dynamics of water level changes during the day of different seasons were obtained.
Key words: autonomous hydro-storage installation, hydraulic ram, photoelectric power station
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