COMPUTER MODELING OF MICRO-HYDROELECTRIC PLANT IN MATLAB/SIMULINK SYSTEM
Keywords:
guide vane , dual-rotor hydro turbine, counter-rotating double-rotor axial flux permanent magnet generator, modeling, experiment, net present value (NPV)Abstract
Abstract: Introduction. As a result of the development of economic sectors in our republic, the increase in the standard of living, and the growth of the population, the demand for energy is rising. This situation greatly affects the development of the social and economic spheres, including the level of electricity supply to the agricultural sector of the country. One of the main solutions to mitigate these effects is the development and improvement of the efficiency of energy devices operating on renewable energy sources, particularly small-capacity hydroelectric plants.
Methods and Materials. The article presents a 3 kW dual-rotor hydropower device adapted to water flows coming out of pump units used in agriculture, modeled using the Matlab/Simulink software package.
Results. According to theoretical and experimental studies, the geometric dimensions of the guide apparatus were determined as follows: outer diameter 1 m, inner diameter 0.5 m, the number of guide vanes 16, the installation angle of the guide vanes β = -17.50, the blade diameter 0.5 m, hub diameter 0.2 m, the number of blades 6, the optimal installation angle of the blades 202.50, and the maximum water consumption rate is 0.24 m³/s. The nominal capacity of the micro-hydroelectric power station was determined to be 3 kW.
Conclusion. According to the analysis of the technical and economic indicators of the device, as a result of the practical application of the developed 3 kW vertical axis micro-hydroelectric power station, it is possible to generate an average of 19,500 kWh of electricity per year, save 14.53 tons of conventional fuel, and prevent the release of more than 28.5 tons of carbon dioxide (CO2) into the atmosphere. The economic efficiency of this micro-hydroelectric power station was evaluated using the “Net Present Value” (NPV) method, with the net present value amounting to 5,500 USD, the static payback period being 1.56 years, and the dynamic payback period being 2.78 years.
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