IMPROVING THE RELIABILITY OF ELECTRICITY SUPPLY FROM NON-TRADITIONAL AND RENEWABLE ENERGY SOURCES

• Date: 2025
• Main Authors: Korovushkin , V., Bosak , A.
• Format: Article
• Language: Ukrainian
• Published: Institute of Renewable Energy National Academy of Sciences of Ukraine 2025
• Subjects: solar energy; wind energy; energy storage; power quality; energy efficiency; generation; power system.
• Online Access: https://ve.org.ua/index.php/journal/article/view/529
• Journal Title: Vidnovluvana energetika

The article presents and analyzes the current legislation in the field of electricity quality regulation. The emphasis is on compliance with standards. The main requirements include: permissible deviations of voltage, frequency, limitation of harmonic distortion, control of flicker and reverse sequence components. Voltage control devices should maintain its level within 100-105% of the nominal value depending on the load. The features of solar and wind energy were characterized. Thus, solar systems (SPPs) are divided into grid-connected, stand-alone, and hybrid. Generation depends on insolation, angle of incidence, panel efficiency, and weather. A typical production profile has peaks during the day, which does not coincide with evening consumption peaks.  Wind turbines are classified by the type of rotor axis (HAWT, VAWT). The power of wind turbines is calculated using a formula that takes into account wind speed, air density and power factor Cₚ (0.2-0.5 for HAWT). Generation is highly variable, especially in unstable wind conditions. In addition, technologies to improve reliability have been proposed, in particular: energy storage (lithium-ion batteries, gravity (GES) and pumped storage (PSH) systems, hydrogen storage).  The methods of generation forecasting are analyzed: sustainability models, physical models, machine learning and hybrid methods. Integration of renewable energy sources requires infrastructure adaptation to their variability. The key areas are the introduction of high-efficiency storage, the development of hybrid forecasting models, and compliance with energy quality standards. Prospects are associated with the improvement of hydrogen technologies, longer battery life, and automation of grid management.