ДИСТАНЦІЙНИЙ ЗАХИСТ В ЕЛЕКТРОЕНЕРГЕТИЧНИХ СИСТЕМАХ З РОЗПОДІЛЕНИМИ ДЖЕРЕЛАМИ ГЕНЕРАЦІЇ ПРИ НЕСИМЕТРИЧНИХ КОРОТКИХ ЗАМИКАННЯХ

• Datum: 2026
• Hauptverfasser: Денисюк , С.П., Омельчук, А.О., Дерев’янко, Д.Г., Заколодяжний, В.В.
• Format: Artikel
• Veröffentlicht: Інститут електродинаміки НАН України, Київ 2026
• Schlagworte: розподілені джерела генерації; резервовані лінії електропередавання; дистанційний релейний захист; електрична дуга; чутливість
• Online Zugang: https://techned.org.ua/index.php/techned/article/view/1826
• Назва журналу: Technical Electrodynamics

In the post-war restoration of Ukraine's energy sector, the role of remote protection (RP) and emergency automation (EA) is being transformed from supporting current performance to creating the foundation for a high-tech, decentralized and sustainable system "Grids of the Future". A promising role in the post-war restoration will belong to the integration of DGS with energy storage and the implementation of adaptive protection systems to increase the economic efficiency of automation of both local and central electrical system modes by reducing the duration of outages and, accordingly, reducing losses to consumers and the energy supply company. The widespread introduction of distributed generation sources (DGS) in electrical networks in the form of solar, wind, and in recent periods, cogeneration plants, turns them into decentralized electric power systems (EPS with DGS), which in turn requires the improvement of their relay protection systems and automatic control systems for their operating modes. The dispersion of such sources and the uncertainty and instability of their generation schedules create additional requirements for the operation of emergency automation in these distribution networks. The article presents the results of a study of the parameters of remote protection with a time delay dependent on the short-circuit circuit resistance for branched distribution lines with redundancy and distributed generation sources under probable two-phase short circuits, taking into account the parameters and operating modes of these lines. The characteristics of the remote protection devices of these lines are obtained, recommended for their adjustment. The conditions under which it is advisable to use remote protection schemes with control of line voltages and phase current differences are determined, but to protect such lines from double ground faults, separate protection should be used, and in its absence, the connection of the main protection for line voltages and phase currents. The efficiency of the full-impedance remote protection operation should be assessed by the maximum length of the electric arc, which is determined by the voltage drop at the point of installation of the protection at the corresponding protection sensitivity coefficient. The method of studying the parameters and operating modes of remote protection of networks with an isolated neutral is used, and the results obtained are recommended for use in the formation of decentralized electric power systems with DGS in the post-war period of development, taking into account today's challenges and the long-term plan. References 20, Figures 3, Table 1.