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Modelling the optimal switching scheme of the Ukrainian power grid during blackout (Volyn region)
(2024-05-29) Hrytsiuk, Iryna; Volynets, Vladyslav; Komenda, Nataliya; Hrytsiuk, Iryna; Hadai, Andrii
The relevance of the study, in particular, in the Volyn region, is due to the need to ensure the reliability and efficiency of the energy infrastructure in the face of growing challenges associated with the war between Russia and Ukraine, technological development and ensuring the country’s energy security. The purpose of the study is to develop a model of the optimal switching scheme for the Volyn region’s power grids during blackout to minimize the negative consequences and ensure priority power supply to critical facilities. The methods used include mathematical modelling, simulation, optimization, sensitivity analysis, and others. The study optimized the power grid switching scheme under the risk of war and other crisis situations, including a thorough analysis of various options in the event of a blackout. Taking into account additional aspects of grid safety and reliability, the optimal routes for power transmission, placement of backup power sources were identified and effective algorithms for grid management were developed. By optimizing the grid switching scheme, the damage caused by blackouts can be minimized, and power supply can be restored quickly. The results confirmed that an optimal switching scheme can significantly reduce blackout time and its impact on the economy and the lives of the population. The development of optimal switching schemes for power grids is an important step towards increasing the resilience of Ukraine’s electricity system to crisis situations. The study has highlighted the importance of developing such models to ensure energy security and resilience of the power grid under the threat of blackouts, which affects the practical aspects of power supply management and economic development. The practical significance of the study is to improve strategies for managing the power grid in blackout conditions, contributing to the resilience of energy systems and economic development.
Prospects for the integration of distributed energy sources into the Ukrainian power grid
(2025-02-27) Hrytsiuk, Iryna; Volynets, Vladyslav; Hrytsiuk, Yurii; Bandura, Irina; Komenda, Nataliya
The integration of distributed energy sources (DES) into the Ukrainian power grid is a critical aspect of modern energy development aimed at increasing the efficiency of the power system, reducing greenhouse gas emissions, and improving the country’s energy security. The purpose of this overview and analysis study was to identify the technical and automation aspects of DES integration, as well as to determine the prospects and challenges associated with their adaptation to centralised grids. The study discussed the principal technical challenges arising from the integration of solar, wind, bioenergy, and other DES into the Ukrainian power grid. Particular attention was paid to the issues of stability and quality of electricity supply, the need to modernise the grid infrastructure, and the use of inverter technologies, energy storage systems (ESS), and hybrid microgrids. The study analysed modern methods of automation and control of distributed generation using Smart Grid, Supervisory Control and Data Acquisition (SCADA), and Distributed Energy Resource Management System (DERMS) technologies, which help to optimise the operation of the power system, increase its reliability and flexibility under variable load conditions. The study considered adaptive control algorithms, mathematical forecasting models, and neural network algorithms that enable prompt adjustment of equipment operating modes, ensuring the stability of the system. It was found that the introduction of inverter systems, SPPs, and hybrid microgrids can re solutions that include the use of renewable energy sources, DERMS, and smart management. The recommendations included infrastructure modernisation, development of hybrid ESSs, and implementation of integrated digital monitoring and control systems. The practical value of this study lies in the development of approaches to the effective integration of DES into local power systems, which can be used in the design and implementation of microgrids in Ukraine.
Estimation of the total influence of methods for increasing the line natural load
(2024) Komenda, Nataliya; Volynets, Vladyslav; Hrytsiuk, Iryna; Bandura, Iryna; Romaniuk, Mykola
Studies aimed at the economically sound increase in the capacity of existing power lines and improvements in their design are relevant today. In addition to the well-known design methods of influencing the capacity of the transmission line, there are other meanings that can affect its natural capacity, which is directly related to the capacity. Therefore, the purpose of this study was to find possible methods of increasing natural power and evaluate their effectiveness in real configurations. The basis of the methodological approach applied in this study is a qualitative combination of methods of systematic analysis of ways to increase the capacity of power lines with the analytical investigation of the prospects for its impact on wave resistance to increase the natural power of the line. The conducted research determined the total influence of the analyzed factors on the increase in transmission capacity and identified the most optimal configuration from a technical and economic standpoint. Based on the results of the calculation of the natural capacity of the configurations, conclusions were made about the significance of the impact of each of the above factors, and the economic effect of their implementation in the integrated power system was established. Improvement of this methodology can, in the long run, serve as a tool for calculating configurations for economic and technical relevance, or serve as a foundation for further identification of factors affecting the transmission capacity of power lines.

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