Abstract
The paper outlines the advantages of using renewable energy sources as a source of electrical energy in decentralized electrical networks including high mountain areas. It also shows options for connecting consumers to sources of electrical energy using both renewable energy sources and a thermal generator, as well as the possibility of connecting to the nearest centralized electrical network. An economic assessment of power supply method choice for consumers in decentralized electrical networks was carried out. To select the method of power supply to consumers, a calculation algorithm has been proposed, on the basis of which a calculation program has been developed that allows you to select the best option for the electrical energy source for power supply to consumers in decentralized electrical networks. The electrical energy source choice is made on the basis of one of the technical and economic parameters, the payback period. To test the developed program, numerical calculations are given using the example of a solar power plant installation with a capacity of 5 kW, which was built in the Aininsky district, Anzob jamoat, Khishortob village (Yagnob Valley). The nominal voltage of the station is 0.4 kV, the line length from the village of Khishortob to the nearest electrical network is approximately 13 km. When choosing the source, the following options for power supply to consumers were compared: installation of a solar power station or diesel power station, or connection to the nearest centralized electrical network. The calculation results showed that the most optimal option is to install a solar power plant with a capacity of 5 kW. At the same time, the payback period for installing a solar power station is 13.065 years, and for a diesel power station, it is 32.922 years. The option of connecting the consumer to the nearest centralized electrical network is unprofitable.
Keywords
economic assessment, algorithm, source, electrical energy, power supply, wind farm, solar power plant, small hydroelectric power station, TG, power transmission line, payback period
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