ANALYSIS OF THE CLOSED-CYCLE PUMPED-STORAGE HYDROELECTRIC POWER STATIONS

• Date: 2024
• Author Affiliations: V. Golovko — National Technical University of Ukraine «Igor Sikorsky Kyiv Polytechnic Institute», Kyiv, Ukraine. Institute of Renewable energy of NAS of Ukraine, Kyiv, Ukraine.; R. Semenenko — National Technical University of Ukraine "Ihor Sikorsky Kyiv Polytechnic Institute", Kyiv, Ukraine.
• Keywords: keywords
• Main Authors: Golovko , V., Semenenko , R.
• Format: Article
• Language: Ukrainian
• Published: Institute of Renewable Energy National Academy of Sciences of Ukraine 2024
• Subjects: renewable energy sources; autonomous pumped storage power plant; gravity power plant; closed cycle of working fluid; wind power plant; solar power plant.
• Online Access: https://ve.org.ua/index.php/journal/article/view/446
• Journal Title: Vidnovluvana energetika

This paper examines the consideration of the design features of closed-cycle pumped-storage hydroelectric power stations, as well as other gravitational energy accumulators to ensure the accumulation of energy from renewable energy sources by means of a comparative analysis. The tasks of research are a rational way of accumulating electricity from wind and solar power plants require a comprehensive approach, taking into account all the features of renewable energy sources. The growing installed capacity of photo and wind power plants is associated with the need to solve the problem of instability of electric power generation over time. The analysis of various storage technologies, including gravity accumulators, hydroaccumulating power plants of underground and marine types, thermal storage, emphasizes that the closed-cycle pumped-storage hydroelectric power stations is an effective energy accumulator for autonomous energy systems of renewable energy. A comparative analysis of closed-cycle pumped-storage hydroelectric power stations showed that stations of this type, in comparison with classic ones, require a smaller amount of working fluid to ensure the same power, which is achieved due to the creation of a higher head up to 600m and the fact that the external source of water needed only to cover system losses. The reduction of environmental impacts is also established, as the installation requires a smaller size of exclusion areas, and the possibility of using tunnels and underground stations minimizes the impact on the environment. It was established that the number of potential places for the installation of closed-cycle pumped-storage hydroelectric power stations is over 615,000 around the world with a total accumulation potential of 23.1 million GWh.