ASSESSMENT OF VOLTAGE QUALITY IN INDUSTRIAL POWER SUPPLY SYSTEMS
Keywords:
electricity quality, power supply systems, higher harmonics, electricity losses.Abstract
The article considers the problem of electricity quality in modern power supply systems of enterprises. The analysis of quality in several countries of the world is carried out. The purpose of the article is to assess the state of voltage quality in industrial electrical networks, taking into account the sharp increase in asymmetric and nonlinear loads and to determine the dependence of electricity losses on the indicators of economic development of the country. Method. The method of expert estimations and methods of statistical analysis were used to determine the average values of electricity losses. Results. The scientific explanation for the high levels of electricity losses in developing countries is due to the unresolved problem of voltage quality and very low values of the natural power factor in industrial, distribution and main electricity networks. Scientific novelty. The article presents an analysis of electricity quality problems at the moment and de-scribes the importance of solving these problems. The solutions are based mainly on changing the level of har-monics that affect the power systems, and thus improve the quality of electricity. The article analyzes the complex deterioration of voltage quality in electrical networks when changing the nature of the electrical load. Practical significance. Finding patterns of electricity losses and GDP of the country. Research is conducted for industrial power supply systems. Based on the research, the priority tasks for solving the problem of low voltage quality in Ukraine are determined.
References
Papaika Yu., Pivnyak G., Zhezhelenko I. (2018). Energetychna efectyvnist system electropostachannya. Dnipro. Dnipro University of Technology. 149 p.
Papaika Yu., Pivnyak G., Zhezhelenko I. (2016). Estimating economic equivalent of reactive power in the systems of enterprise power supply. Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu. № 5. 62-66.
Papaika Y., Lysenko O., Kosobudzki G. (2017). Power Quality and Resonances in Power Supply Systems with non-sinus-oidal Loads. Advanced engineering forum, Trans Tech Publication, Switzerland. 143-150.
Pivnyak G. Normalization of voltage quality as the way to ensure energy saving in power supply systems / G. Pivnyak, I. Zhezhelenko, Yu. Papaika // “Energy Efficiensy improvement of geotechnical systems”, Taylor&Francis Group (A Balkema Book). – 2013. – Р. 11-18.
Інтелектуальні електричні мережі і елементи та режими. За ред. акад. НАН України О.В. Кириленко. – Інститут електродинаміки НАН України, 2016, 400 стр.
Pivnyak G.G. Transients in Electric Power Supply Systems: textbook for students of higher educational institutions / G.G. Pivnyak, I.V. Zhezhelenko, Y.A. Papaika; under the editorship of Academician of National Academy of Sciences of Ukraine Professor G.G. Pivnyak. – Switzerland: TTP. – 2016 – 382 p.p.
Жежеленко И.В. Оценочные методы определения экономического эквивалента реактивной мощности / И.В. Жежеленко, Ю.А. Папаика, А.Г. Лысенко // Гірнича електромеханіка та автоматика: наук.-техн. зб. – 2017. – Вип. 98. – С. 3-6.
Электромагнитная совместимость потребителей: моногр / И.В. Жежеленко, А.К. Шидловский, Г.Г. Пивняк, Ю.С. Саенко, Н.А. Нойбергер. – М.: Машиностроение, 2012. – 351 с.
Огляд енергетичної галузі за 2017 рік. – Всеукраїнська енергетична асамблея (ВЕА), 2018 рік
