Impact of distributed generation on the functioning of line current protection
Дата
2025
Автори
Науковий керівник
Назва журналу
Номер ISSN
Назва тому
Видавець
КПІ ім. Ігоря Сікорського
Анотація
Enhancing the operational reliability of distribution electrical networks (DENs) necessitates the implementation of intelligent systems that enable the real-time optimization of network operating modes, improve the reliability of power supply, and effectively integrate renewable energy sources.Distributed generation (DG) plays an increasingly crucial role in modern power systems. However, its integration into distribution networks can significantly affect the operation of existing protection systems. To evaluate this impact, it is essential to conduct calculations, justifications, and simulations of relay protection (RP) operation in networks with DG. Low-and medium-voltage DENs are critically important for ensuringthe reliable and high-quality power supply to end consumers. Their effective functioning directly influences the overall reliability and quality of electricity in the integrated power system of Ukraine.This article investigates the impact of distributed generation on the functioning of the line relay protection of DENs. For the research, a typical fragment of an electrical network with distributed generation is utilized, based on which short-circuit current calculations were performed, and the minimum value of the short-circuit infeed current from the power system was substantiated. It was established that the additional generation source affects the proportion of the power system current in the total short-circuit current, and there is an interrelation between the location of DG in the electrical network and the sensitivity of the line current protection.
Опис
Ключові слова
current relay protection, distribution networks, distributed generation, струмовий релейний захист, розподільні мережі, розосереджена генерація
Бібліографічний опис
Yandulskiy, O. Impact of distributed generation on the functioning of line current protection / O. Yandulskiy, Y. Khlystov // Енергетика: економіка, технології, екологія : науковий журнал. – 2025. – № 3. – С. 53-57. – Бібліогр.: 5 назв.