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title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: The calculation of electro-thermal processes in surge arresters to protect the insulation of high voltage power transmission lines
Creators: name: Ð¡Ð¸ÑÐ°Ð½Ð¾Ð², ÐÐ»ÐµÐºÑÐµÐ¹
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2022
Subjects: Ð­Ð»ÐµÐºÑÑÐ¸ÑÐµÑÐºÐ¸Ðµ Ð»Ð¸Ð½Ð¸Ð¸ Ð¿ÐµÑÐµÐ´Ð°ÑÐ¸
ÐÐµÑÐµÐ½Ð°Ð¿ÑÑÐ¶ÐµÐ½Ð¸Ñ (ÑÐ»ÐµÐºÑÑ.)
ÐÐ°ÑÐµÐ¼Ð°ÑÐ¸ÑÐµÑÐºÐ¾Ðµ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ
ÐÐ°ÑÐ¸ÑÑÐ¾ÑÑ
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ÑÐ»ÐµÐºÑÑÐ¾ÑÐµÐ¿Ð»Ð¾Ð²ÑÐµ Ð¿ÑÐ¾ÑÐµÑÑÑ
ÐºÐ¾Ð½ÑÐ°ÐºÑÐ½Ð¾Ðµ ÑÐ¾Ð¿ÑÐ¾ÑÐ¸Ð²Ð»ÐµÐ½Ð¸Ðµ
ÐµÑÑÐµÑÑÐ²ÐµÐ½Ð½Ð°Ñ ÐºÐ¾Ð½Ð²ÐµÐºÑÐ¸Ñ
surge arrester
electro-thermal processes
contact resistance
natural convection

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description: The subject of the graduate qualification work is âThe calculation of electro-thermal processes in surge arresters to protect the insulation of high voltage power transmission linesâ. The work is devoted to the mathematical modeling of processes in a surge arrester in order to investigate the electro-thermal processes in the surge arrester when the lightning current passes through it. The object of the study is a non-linear overvoltage arrester of the support design for a voltage class of 110 kV. During the work, the following tasks were identified: 1. The study of various publications on the following topics: the operation principles of the arrester, the use of arresters in lightning protection of lines, the theory of electrical surges; with the aim to obtain knowledge sufficient to conduct the research. 2. The development of a mathematical model of surge arresters based on oxide-zinc varistors of the support design for the highest voltage classes (110 kV) with polymer insulation. 3. Conducting tests that meet the regulatory requirements and study the thermal conditions of the developed electrical apparatus. 4. Comparison of various models of contact resistance. The result of the development was a mathematical model of the surge arrester, which satisfies the requirements for structures of this type. This model was tested with three types of impulse currents and showed the ability to withstand the loads required for this design. A model that simulates natural convection from the surface of the surge arrester was also created.