A switching device for realizing switching control of multiple power supply systems

Abstract

The invention discloses a switch device for realizing switching control of multiple power supply systems. The switch device includes a connected cabinet body and a cabinet door. The cabinet body is provided with a drive board, a current sensor for detecting output current, and a cabinet door. A plurality of bidirectional thyristor static switches, and each bidirectional thyristor static switch is connected in series in the power supply line of the corresponding power supply; said cabinet door is provided with a main controller, and said main controller The voltage signal and the output current signal drive the corresponding bidirectional thyristor static switch to perform corresponding actions through the drive board. The implementation of the technical scheme of the present invention overcomes the circulating current caused by instantaneous power failure and arcing when the mechanical switch or relay is switched, thereby ensuring that the switching interruption time is at the millisecond level.

Description

technical field [0001] The invention relates to the technical field of power control, in particular to a switch device for realizing switching control of multiple power supply systems. Background technique [0002] In the current power grid power supply system, due to the switching of large power supply equipment, lightning weather, load failure and other reasons, the power supply voltage drops or is cut off instantaneously, resulting in sensitive load systems (computer terminal equipment, data processor equipment, non Allow power-off load) power outage, which will cause equipment damage, data loss and even personal injury or death. Therefore, industries with special requirements for power supply are often equipped with dual power supply systems. When the main power supply fails or is abnormal, it needs to be switched to another power supply system directly, safely and reliably within microseconds. The currently known two-way automatic switch for power supply uses a mechani...

AI Technical Summary

Problems solved by technology

For loads that are not allowed to be powered off, power switching needs to be completed within 20 milliseconds or even 4 milliseconds. Therefore, traditional mechanical switches or relays cannot meet the requirements of sensitive load systems for power switching speed

Moreover, the traditional mechanical type will generate arcing during the switching process, and the circulation caused by the arcing will easily cause secondary short circuit

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