МОДЕЛЮВАННЯ ТА АНАЛІЗ ДОВГОТРИВАЛИХ 24-ГОДИННИХ ПРОЦЕСІВ ЗМІНЕННЯ ПОТОКІВ ЕЛЕКТРИЧНОЇ ЕНЕРГІЇ В МІКРОМЕРЕЖІ ПРОМИСЛОВОГО ПІДПРИЄМСТВА

industrial microgrid
critical electrical equipment
changes in active and reactive electrical power in the microgrid
method for calculating long-term electrical processes
computer analysis in the Matlab/Simulink package промислова мікромережа
критично важливе електрообладнання
змінення в мікромережі активної та реактивної електричних потужностей
метод розрахунку довготривалих електричних процесів
комп’ютерний аналіз у пакеті Matlab/Simulink

How to Cite

[1]

Shcherba, A. et al. 2026. MODELING AND ANALYSIS OF LONG-TERM 24-HOUR PROCESSES OF CHANGES IN ELECTRICAL ENERGY FLOWS IN THE MICROGRID OF AN INDUSTRIAL ENTERPRISE. Tekhnichna Elektrodynamika. 1 (Jan. 2026), 062. DOI:https://doi.org/10.15407/techned2026.01.062.

Abstract

The paper considers the energy strategy for implementing reliable uninterrupted power supply of critically important technological equipment of an industrial enterprise of Ukraine in modern military conditions by creating its industrial microgrid and solving scientific and technical problems regarding the optimal use of its elements and reducing overall costs, which take into account the cost of electricity received from each source of the microgrid. To solve this problem, a computer modeling method was used. It is shown that for modeling long-term (24-hour) electromagnetic processes in a microgrid, it is advisable to use a generalized method for calculating complex currents, which is usually used to calculate sinusoidal current electrical circuits. However, in this task, it is also necessary to take into account that in a microgrid, not only the amplitudes of currents change slowly over time, but also their phases, so it is advisable to use the dynamic phasor method, according to which the calculation is performed simultaneously in the complex and time planes. To implement this method in the Matlab/Simulink package, it is necessary to develop appropriate system models for all power sources and time-varying loads. The paper presents the results of calculating long-term (over a day) active and reactive power flows in the microgrid of a typical industrial enterprise, which contains such power sources as a solar power plant and a cogeneration unit, which can operate both in parallel with the external power grid and without it. The daily costs of electricity obtained from each power source are determined. In order to identify ways to reduce the total cost of electricity, the paper considers various scenarios for connecting power sources and determines their impact on the total daily costs of the enterprise. References 32, figures 8, table 1.

https://doi.org/10.15407/techned2026.01.062

ARTICLE_7_PDF (Українська)

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