title: ÐÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð¾ÑÐºÐ»ÑÑÐ°ÑÑÐµÐ¹ ÑÐ¿Ð¾ÑÐ¾Ð±Ð½Ð¾ÑÑÐ¸ Ð²Ð°ÐºÑÑÐ¼Ð½Ð¾Ð³Ð¾ Ð²ÑÐºÐ»ÑÑÐ°ÑÐµÐ»Ñ 10 ÐºÐ-20 ÐºÐ/2000 Ð Ñ Ð°ÐºÑÐ¸Ð°Ð»ÑÐ½ÑÐ¼ Ð¼Ð°Ð³Ð½Ð¸ÑÐ½ÑÐ¼ Ð¿Ð¾Ð»ÐµÐ¼
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Investigation of the Breaking Capacity of a 10 kV - 20 kA/2000A Vacuum Circuit Breaker with Axial Magnetic Field
Creators: name: ÐÐ¸Ð²ÑÐ°Ðº, ÐÐ»Ð°Ð´Ð¸Ð¼Ð¸Ñ
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: 2023
Subjects: Ð²Ð°ÐºÑÑÐ¼Ð½ÑÐ¹ Ð²ÑÐºÐ»ÑÑÐ°ÑÐµÐ»Ñ
Ð°ÐºÑÐ¸Ð°Ð»ÑÐ½Ð¾Ðµ Ð¼Ð°Ð³Ð½Ð¸ÑÐ½Ð¾Ðµ Ð¿Ð¾Ð»Ðµ
Ð¾ÑÐºÐ»ÑÑÐ°ÑÑÐ°Ñ ÑÐ¿Ð¾ÑÐ¾Ð±Ð½Ð¾ÑÑÑ
ÑÐ»ÐµÐºÑÑÐ¸ÑÐµÑÐºÐ°Ñ Ð´ÑÐ³Ð°
ÐºÐ¾Ð½ÑÐ°ÐºÑÐ½Ð°Ñ ÑÐ¸ÑÑÐµÐ¼Ð°
high-voltage vacuum circuit breaker
axial magnetic field
breaking capacity
electric arc
contact system

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description: This study is dedicated to the investigation of the breaking capacity of a vacuum circuit breaker and the determination of its magnitude for different geometric constructions of the contact system. The research was conducted using the COMSOL MULTIPHYSICS simulation environment. With the help of this software package, a model of the vacuum circuit breaker was constructed, including its arc quenching chamber and contacts designed to generate an axial magnetic field when current passes through. The specific axial component of the magnetic field induction in the contact gap was also calculated. To achieve this, an electromagnetic field in the contact gap space was simulated. Several studies were conducted on contacts with different inclinations of side grooves to determine the influence of contact geometry on the breaking capacity. The contact gap distance was kept constant for all the studies. The following tasks were addressed during the research: Study of the peculiarities of vacuum circuit breaker constructions with an axial magnetic field. Investigation of the characteristics of materials used for manufacturing contacts in the arc quenching device to select the appropriate material for the contacts of the 10 kV - 20 kA/2000A vacuum circuit breaker with an axial magnetic field. Analysis of the interaction between the vacuum circuit breaker and the power system: analysis of the transient recovery voltage during the passage of short-circuit current between the contacts. Creation of a mathematical model of the electromagnetic processes occurring in the vacuum circuit breaker. Conducting a series of calculations with different inclinations of side grooves on the contacts. It was found that a metal-ceramic composite of copper and chromium, with a ratio of 30% and 70% respectively, significantly improves the breaking capacity. A mathematical model of the electromagnetic processes during the extinction of the diffuse arc in the axial magnetic field was developed. As a result, five calculations of the breaking capacity of the vacuum circuit breaker with an axial magnetic field were performed using the COMSOL MULTIPHYSICS software package, which is suitable for finite element analysis. The findings of this research can be applied in the design of vacuum arc quenching chambers and/or comparing the breaking capacity of vacuum circuit breakers with other types of circuit breakers designed for 10 kV voltage and 20 kA breaking current.