Stepanenko V. Management of the integration of renewable energy sources into electricity distribution networks. Qualifying scientific work, the manuscript.
PhD thesis in the field of knowledge 14 Electrical engineering in specialty 141 Electric power, electrical engineering and electromechanics. – National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Kyiv, 2025.
The Fourth Energy Package of the European Union was adopted to strengthen energy security, reduce dependence on external energy carriers and ensure the functioning of the domestic energy market. Therefore, the development of renewable energy sources in Ukraine will comply with international standards, principles and practices of the European Union, as well as meet the needs of society and the national economy in fuel and energy resources in a cost-effective, technically reliable, environmentally friendly and safe manner, and guarantee energy security both in peacetime and in emergency situations.
However, it is worth noting that the existing modes of operation of distribution power grids can only meet the requirements and standards of the past decades and are unable to meet new tasks and future challenges, including the characteristics of new renewable energy sources. Currently, a wide range of incentive and management strategies are being applied in different countries. However, which of the various instruments is the most effective and efficient for increasing the share of renewable energy sources is still a topic of research, as each mechanism has its own set of advantages and disadvantages, as well as specific application. What these mechanisms have in common is that they should be implemented in a market-based manner without interfering with the economic activities of entities and with maximum benefit to the power system.
Technical specifications are an important tool for regulating the relationship between distribution system operators and owners of renewable energy sources. They regulate the technical aspects of connecting such sources to the grid and serve as a model for interaction between the two parties. Despite their importance, technical conditions cover only the technical side of the issue of connecting renewable energy sources to the grid. They ensure the initial compliance of renewable energy facilities with the requirements of the grid infrastructure, such as voltage levels, permissible frequency fluctuations, grid capacity, etc. However, the technical conditions do not take into account the long-term impact of renewable energy sources on the functioning of the power system and do not provide for mechanisms to control or account for possible deterioration of its operating conditions.
This thesis aims to improve the efficiency of managing the integration of renewable energy sources into distribution power grids by applying market mechanisms. In such a system, each participant will be financially responsible for the impact on the grid condition, paying for the deterioration they create. This will balance the interests of distribution system operators and owners of renewable energy sources, promote responsible generation, and encourage minimization of negative technical consequences for the power system.
To this end, the paper assesses the risks of distribution networks functioning during the integration of renewable energy sources by determining the integration efficiency coefficient, which is based on a comprehensive analysis of network parameters and which, unlike other indicators, makes it possible to systematically assess and control the impact of such electrical installations on the network.
To improve the efficiency of the operation of electricity distribution networks when integrating renewable energy sources in the context of the introduction of the 4th Energy Package, the study uses the differentiation of tariffs for electricity distribution services by the level of the efficiency coefficient of renewable energy sources integration. The Deming cycle was adapted to solve the problems of uncontrolled operation of renewable energy sources, which became possible due to the introduction of a mechanism for managing their integration into the power grid.
Keywords: electricity grid, modes of operation of electricity distribution systems, renewable energy sources, integration, differentiation of electricity distribution tariffs, management, quality of electricity.
List of main publications of the applicant: Based on the results of the research, 10 scientific papers were published, including 4 articles in scientific professional journals, 1 article in an international publication, 1 article in a publication included in international scientific databases (Scopus) as conference proceedings, 4 abstracts in conference proceedings.
