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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Применить Всего найдено 2. Отображено 2.
22-08-2023 дата публикации

Moving contact spring type selection method of vacuum circuit breaker and vacuum circuit breaker

Номер: CN116631809A
Автор: LI YISHENG, JIA SHENLI, MO YONGPENG
Принадлежит:

The invention discloses a moving contact spring model selection method of a vacuum circuit breaker and the vacuum circuit breaker, and aims at a moving contact spring without limitation and pre-pressure, according to the closing time of the vacuum circuit breaker, the closing electromagnetic repulsive force action time of an operating mechanism of the vacuum circuit breaker and the load mass of the moving contact spring. The rigidity coefficient of the moving contact spring is obtained by combining a moving contact spring model selection model without limitation and pre-pressure; and selecting the moving contact spring meeting the rigidity coefficient. For a limiting moving contact spring with pre-pressure, according to the closing time of the vacuum circuit breaker, the closing electromagnetic repulsive force acting time of an operating mechanism of the vacuum circuit breaker, the load mass of the moving contact spring and the time for deceleration after a moving contact collides with ...

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Номер записи: 1
07-04-2023 дата публикации

Vacuum circuit breaker closing speed optimization method

Номер: CN115935792A
Автор: JIA SHENLI, FAN RONG, MO YONGPENG, SHI ZONGQIAN
Принадлежит:

The invention discloses a vacuum circuit breaker closing speed optimization method, which comprises the following steps of: selecting a plurality of closing speeds in a closing speed range, calculating a pre-breakdown arc time interval of a vacuum circuit breaker under all closing phase angles corresponding to each selected closing speed according to a relationship between a pre-breakdown gap distance and a pre-breakdown voltage, according to the contact bounce recovery coefficient, calculating a bounce arc time interval of the vacuum circuit breaker under all the switching-on phase angles corresponding to each selected switching-on speed; according to the pre-breakdown arc time interval and the bounce arc time interval, calculating the total closing arc energy of the vacuum circuit breaker under all closing phase angles corresponding to each closing speed; accumulating the total energy of the closing arc to obtain an expected value of the total energy of the closing arc of the vacuum circuit ...

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Номер записи: 2