IMPROVEMENT OF THE METHOD FOR MATCHING CHARACTERISTICS OF THE PUMP OF A PUMPED STORAGE SYSTEM AND A PHOTOVOLTAIC STATION

• Date: 2026
• Main Authors: Golovko , V., Semenenko , R.
• Format: Article
• Language: Ukrainian
• Published: Institute of Renewable Energy National Academy of Sciences of Ukraine 2026
• Subjects: energy storage; water; renewable energy sources; solar radiation; photovoltaic power station; solar irradiation; pumped storage; power plant.
• Online Access: https://ve.org.ua/index.php/journal/article/view/596
• Journal Title: Vidnovluvana energetika

The paper addresses the problem of improving the energy efficiency of autonomous pumped storage systems based on photovoltaic (PV) power plants. Based on the developed simulation model of the "PV – induction motor drive – centrifugal pump" system, an algorithm for matching the installed capacities of the system units has been developed. The expediency of frequency control based on the combinator characteristic to maintain maximum efficiency is substantiated. The method for matching the characteristics of the photovoltaic station and the pumping unit has been improved by synthesizing a frequency control law based on the combinator dependence. A methodology for selecting pump units is proposed, taking into account the excess of the pump's nominal power over the drive power by 1.3–2 times, which allows expanding the control range and increasing operation stability under low solar insolation. Simulation results confirmed that the application of a parallel pump operation scheme with a stepped control algorithm allows achieving a solar energy utilization coefficient for water storage at the level of 58.5%.