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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: Effect of short-circuit currents on contact connections current lines in the switchgear 6-10 kV, 50 kA
Creators: name: ÐÐ°ÑÑÐºÐ¸Ð½, ÐÐ»Ð°Ð´Ð¸ÑÐ»Ð°Ð²
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: 2021
Subjects: ÐÐ¾Ð¼Ð¼ÑÑÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ Ð°Ð¿Ð¿Ð°ÑÐ°ÑÑÑÐ°
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description: The subject of the graduate qualification work is â"The effect of short-circuit currents on the contact connections of current lines in a 6-10 kV 50 kA switchgear" his work is devoted to the study of contact connections of 6-10 kV switchgear current lines on the electrodynamic and thermal resistance of short-circuit currents. Tasks that were solved in the course of the study: 1. Study of the design of the 6-10 kV switchgear. 2. Development of a geometric model of the current pipeline in the program COMPASS-3D. 3. Development of a mathematical model in the PC "COMSOL Multiphysics", selection of the necessary parameters, physical modules, their configuration. 3. Simulation of the current line test for thermal stability. 4. Test of the current line for the electrodynamic effect of the short-circuit current. In the course of this work, a geometric model of the contact connection of the 6 kV switchgear busbars was developed. On its basis, the simulation of the heating process of tires when passing the rated current and short-circuit current is performed. The results of the tire heating allowed us to compare the obtained temperature values with the permissible ones, following the regulatory documents. The electrodynamic effect of the short-circuit current was also calculated. Based on the obtained values, it was concluded that the busbars of the current pipeline meet the requirements of GOST.