ASPECTS OF IMPLEMENTATION OF DISTRIBUTED GENERATION SOURCES IN THE ELECTRICITY SUPPLY SYSTEM OF ENTERPRISES OF THE AGRICULTURAL COMPLEX
Authors: Boiko Serhii , Zhukov Oleksii , Koval Andriy , Pechenyuk Dmytro 
Published: September 2023

Today, the agro-industrial complex of Ukraine determines the socio-economic development of the state, and is an integrated production and economic system, uniting a number of agricultural, industrial, scientific-production and educational sectors aimed at obtaining, transporting, storing, processing and selling agricultural products. However, at the current stage of development of the agro-industrial complex of Ukraine, a significant obstacle to ensuring the appropriate level of competitiveness of enterprises and their products on the foreign market is the high level of energy consumption. A separate problem is the complete dependence on the electric power system, which mainly uses traditional fuel resources and has a number of disadvantages, which creates risks for the effective functioning of a strategically important sector of the state economy and substantiates the relevance of scientific research aimed at improving the optimization of the structure of energy consumption and energy supply, in that including due to the introduction of elements of alternative energy at enterprises of the agro-industrial complex of Ukraine. Thus, by implementing DRG and RES, agro-industrial complex enterprises increase their capacities, which contributes to the attraction of investments and increases their competitiveness. This state of affairs leads to a review of the issue of the active introduction of RES into the electricity supply structures of agricultural enterprises, which is associated with negative effects on the electricity supply systems of electricity consumers. But the analysis of previous studies shows that with a certain combination of disturbances on the same and different harmonic components of energy processes of different types of generators, mutual compensation or mutual reinforcement of one or another harmonic component in loads may occur [1]. In addition, three-phase power transformers with a "star-zero-delta" group of connections are widely used in the power supply systems of agro-industrial complex enterprises to power electric machines and other powerful consumers. In this case, the supply voltage from distribution networks of 6-10 kV is supplied to the transformer windings connected by a delta, and consumers are connected to the low side of 0.4 kV, the windings of which are connected in star with neutral. However, recently, quite often generating power is installed on the low side of the transformer in the power supply system. These can be photovoltaic plants, biogas power plants or diesel generator plants, which began to be installed en masse after the power supply crisis associated with Russian aggression. The paper examines the advantages, problems and prospects of DRG based on renewable energy sources at Ukrainian agro-industrial complex enterprises, which proves its economic feasibility in power supply systems. The proposed approach is that the introduction of DRG based on renewable energy into the power supply system of agro-industrial complex enterprises contributes to reducing the level of energy dependence of these enterprises and is one of the factors of increasing the competitiveness of manufactured products on the domestic and foreign markets due to the reduction of the cost of their production. The introduction of RES into the structures of the centralized power supply system of agricultural enterprises increases the reliability of power supply systems by providing electricity from two independent power sources. In addition, the amount of electricity received from the power supply company is significantly reduced. The use of artificial intelligence technology in the construction of control systems for the combined power supply systems of agro-industrial complex enterprises will increase the quality of electric energy, optimal use of RES and reduce abnormal modes of operation of the electrical complex of agro-industrial complex enterprises as a whole.