Justification of the Energy and Economic Parameters of Pumped Storage Power Plants in Uzbekistan
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WABLE ENERGY SOURCES
Justification of the Energy and Economic Parameters of Pumped Storage Power Plants in Uzbekistan M. M. Mukhammadieva, * and K. S. Dzhuraeva aTashkent
State Technical University, Tashkent, 100095 Uzbekistan *e-mail: [email protected]
Received July 4, 2019; revised October 29, 2019; accepted January 20, 2020
Abstract—In connection with plans for creating power plants using renewable energy sources, primarily solar, as well as the nature of daily electricity consumption, the issues of creating maneuverable capacities to regulate or ensure consistency between generated and consumed capacities are becoming increasingly relevant. One way to regulate capacity is the creation of pumped storage power plants (PSPPs). The article discusses the possibilities of creating a PSPP in Uzbekistan, considering the water management of its hydro resources and their dispersal. A methodology and a program for carrying out calculated assessments of PSPP efficiency in Uzbekistan are proposed and examples of calculation are given. The research results show the promise of several PSPP schemes for regulating the system’s power generating capacities, including power plants based on solar and wind energy. Keywords: power system, pumped storage power plant, water management system, turbine mode, pump mode, peak energy load, energy and economic parameters DOI: 10.3103/S0003701X20030081
INTRODUCTION In connection with the growth of electricity generating capacities, in particular due to the use of renewable energy sources (primarily solar photovoltaic and wind power plants), the issues of capacity regulation, namely, ensuring correspondence between generated and consumed capacities, are becoming increasingly relevant [1, 2]. As is known, one way to solve the problem is the creation of pumped storage power plants (PSPPs) [1, 3–6]. Today, more than 500 PSPPs are operating in the world, with a unit capacity of 200–250 MW, and there is a tendency to increase them to 400–500 MW and above. The installed power range of PSPPs varies from several tens of kW to 3000 MW (Edison PSPP in the USA), with pressures from several tens of meters to 1700 m (PSPP Reitzek-Kreitsik in Austria) [7–14]. The most intensive PSPP development was carried out in the USA (39 PSPPs, 20.8 mln kW), Japan (20 mln kW), Germany (33 PSPPs, 5.6 mln kW), Italy (22 PSPPs, 7.0 mln kW), Austria (4.4 mln kW), France (4.4 mln kW), Switzerland (13 PSPPs, 1.2 mln kW), China (5.0 mln kW), Spain (5.0 mln kW), etc. [3, 8, 11–19]. The PSPP capacity in Japan is 20 mln kW or 9.4% of the total installed capacity of generating stations. In general, according to the results of the analysis of
PSPP characteristics, it follows that the main economic effect of using PSPPs is primarily to ensure efficient operation of existing thermal power plants (TPPs), including nuclear power plants [8, 10, 15, 20]. At the same time, direct economic incentives are also applied to ensure the implementation of PSPPs. In the UK, the search for a reasonable compromise between the technical an
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