Authors: T.F. Malakhova, S.G. Zakharenko, S.A. Zakharov, Kudryashov , E.V. Skrebneva, A.O. Balaganskiy

Title of the article: Lightning storms and protection of power supply systems against atmospheric overvoltage

Year: 2017, Issue: 4, Pages: 110-116

Branch of knowledge: Electrical engineering

Index UDK: 621.316

DOI: 10.26730/1999-4125-2017-4-110-116

Abstract: Lightning overvoltage has the largest multiplicity, while being the shortest in time and most severe for electrical installations. Commutation overvoltage, on the contrary, has a small multiplicity, but it can exist for hours. Therefore, lightning overvoltage in power supply systems (hereinafter - SES) is most relevant. The analysis of technological disturbances by type of equipment and by causes of disturbances during atmospheric overvoltage is given in the article. The article reviews the influence of atmospheric overvoltage on the functioning of power supply systems, the nature of the source of lightning overvoltage, the propagation of waves in power supply systems, the protection by technical means from atmospheric overvoltage during breakthrough of lightning to live parts. The characteristic of thunderstorm overvoltage in comparison with other types of overvoltage is given. The evaluation of protection features as well as measures to protect against lightning overvoltage has been carried out. The problems of reducing the influence of lightning overvoltage on the operation of power supply systems are considered. The theme of the work is of great practical importance, since protection against lightning overvoltage is one of the most difficult technical and economic problems, which is impossible to solve completely at the present time due to a poorly studied theoretical part and imperfection of available technologies.

Key words: Electric power engineering overvoltage thunderstorm lightning equipment protection

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