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  • Development of an combined energy complex consisting of a micro-hydroelectric power plant and a solar photoelectric plant for the conditions of Uzbekistan




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    Development of an combined energy complex consisti



    Deve
    l
    opment 
    of 
    an 
    combined 
    energy 
    complex consisting of a micro-hydroelectric 
    power plant and a solar photoelectric plant for 
    the conditions of Uzbekistan 
    Feruza
    Yusupova
    1
    , and 
    Nomomjon
    Sultanov
    1*

    Fergana Polytechnical Institute, 150107 Fergana, Uzbekistan 
    Abstract.
    The article develops a block diagram of an energy device that 
    serves as the embodiment of a microhydroelectric power station and a solar 
    photovoltaic installation. Based on this structural diagram, a combined 
    energy device consisting of a solar photovoltaic power plant and a 
    microhydroelectric power station was developed and installed for 
    experimental research at the family enterprise “Akbarzhon Korki” in the 
    Sokchilik microdistrict, Toshlok district. Based on the needs of the family 
    business, the electricity generated by a combined power plant consisting of 
    a 4 kW solar photovoltaic system and a 0.7 kW microhydroelectric power 
    plant was used for lighting systems, a refrigerator, an electric cooking stove, 
    and a modem. Internet connection device and video surveillance equipment. 
    As a result of the implementation at the family enterprise, 2 124 000 soums 
    of electricity produced by the combined energy device were used for the 
    enterprise’s own needs during the year, and economic efficiency of 12
    599 
    000 soums was achieved. 
    1 Introduction 
    If the world's existing underground fuels are used quickly, then, according to the International 
    Energy Agency, oil, the main hydrocarbon fuel, will amount to 1.734 trillion barrels 
    worldwide within 53 years, natural gas - 196.8 trillion cubic meters within 60 years, and coal 
    - more than 150 years, according to forecasts, it will come with time. Therefore, due to the
    uneven distribution of underground fuel resources on a global scale, this leads a number of
    countries to economic energy dependence, and the economic development of these countries
    is limited due to energy shortages [1-2].
    As a result of the use of large amounts of natural gas fuel in the daily life of industry 
    during the production of electricity, large amounts of toxic gases are released into the 
    environment, as well as the daily depletion of fuel reserves. resources [3-5]. 
    The substantially to rapid economic growth and industrialization depends upon the 
    electrical energy. To ensure the sustainable development, having reliable, secure and 
    *
    Corresponding author: 
    zokhidjon@ferpi.uz
    , 05027 (2024)
    BIO Web of Conferences
    AQUACULTURE 2023
    https://doi.org/10.1051/bioconf/20248405027
    84
    © The Authors, published by EDP Sciences. This is an open access article distributed under the terms of the Creative
    Commons Attribution License 4.0 (https://creativecommons.org/licenses/by/4.0/). 


    afordable energy service to the community is important [6]. As a result, combining renewable 
    resources may be able to meet a greater portion of electricity consumption, while also 
    providing a stable and consistent supply of energy [7-8]. Therefore, the transition to the use 
    of renewable energy sources becomes a pressing and important issue. 
    In this regard, in our republic, special attention is paid to the widespread introduction of 
    renewable energy sources in the sphere of social and housing and communal services, as well 
    as in sectors of the economy to cover the energy deficit by increasing energy efficiency. In 
    particular, a subsidy has been established in the amount of 1000 soums from the state budget 
    for each kilowatt-hour of electricity produced by solar panels installed on private facilities 
    and transferred to a unified electric power system [9]. Also, continuous electricity production 
    is realized through the modernization of existing micro-hydroelectric power plants, the 
    development of new types and combining them with solar photovoltaic power plants. 
    The use of alternative energy sources makes it possible to reserve sources of electrical 
    energy. Each converter in an alternative energy source has its own disadvantages. This leads 
    to the combination of two different types of energy sources to overcome these disadvantages, 
    i.e. solar panels are used during the day or when water flow is low, while microhydropower 
    is used in the evening or when the weather is cloudy. 
    A scheme for parallel connection of two or more renewable energy sources was proposed 
    by A. V. Akkuratov and others. When two or more renewable energy sources are connected 
    in parallel, their voltages are not the same. If the voltage of one of the two energy sources is 
    greater, this source supplies the consumer with electricity. Low-voltage sources, instead of 
    providing energy, switch to energy receiving mode. Some of the energy of the energy source 
    is lost to other sources, causing excessive energy losses, resulting in a decrease in its energy 
    efficiency [10]. 
    To overcome this, a block diagram of an integrated energy device was developed, 
    consisting of a solar photovoltaic power plant and a microhydroelectric power plant, as a 
    result, it became possible to increase its energy efficiency by connecting a solar photovoltaic 
    power plant. plant and micro-hydroelectric power station successively over time. 
    Figure 1 shows a simplified version of the energy system based on renewable energy 
    sources, presented in utility model FAP 02108 for two sources: a block diagram of an 
    embodied energy device consisting of a solar photovoltaic plant and a microhydroelectric 
    power plant [11]. 
    The power plant works as follows. Electricity will be produced by solar photovoltaic 
    power plant No. 1 (solar energy) and microhydroelectric power plant No. 2 (water flow 
    energy). Rectifier 3 adjusts the voltage of the micro-hydroelectric power station to constant. 
    The first control unit 6 measures voltages and generates pulses, the duration of which is 
    determined by their magnitude. These pulses are supplied to switches 4 and 5, which operate 
    alternately, and to boost converter 7, which does not operate sequentially. As a result, the 
    boost converter receives energy from sources through open switches and generates a stable 
    voltage at its output. 
    , 05027 (2024)
    BIO Web of Conferences
    AQUACULTURE 2023
    https://doi.org/10.1051/bioconf/20248405027

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    Development of an combined energy complex consisting of a micro-hydroelectric power plant and a solar photoelectric plant for the conditions of Uzbekistan

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