Intelligent dual-power automatic transfer switch and running method

Abstract

The invention discloses an intelligent dual-power automatic transfer switch, which relates to a loop device with an automatic conversion function for disconnecting a distribution system from a normal power supply and connecting the distribution system with a standby power supply. The switch comprises a control part and an execution part. The control part mainly comprises a singlechip, a voltage transformer, a booster circuit, a photoelectric coupler, a key, a liquid crystal display (LCD) and a chip 74LS164. The execution part mainly comprises a motor, a mechanical interlocking structure and a circuit breaker. In the switch, the control part is formed by taking the singlechip as a core, variations of corresponding voltage and frequency parameters of two paths of input power can be automatically detected, logic judgments are made, and when a power supply system has abnormal voltage or frequency, the motor rotates and the mechanical interlocking structure drives the circuit breaker to act to realize the automatic transfer of the power supplies, thereby overcoming the shortcoming that a load circuit cannot be automatically transferred from an abnormal power supply to another normal power supply when the power supply system has the abnormal voltage or frequency in the prior art.

Description

technical field [0001] The technical solution of the present invention relates to a circuit device with automatic conversion used for power distribution system disconnecting from normal power supply and connecting to backup power supply, in particular, an intelligent dual power supply automatic transfer switch and its operation method. Background technique [0002] With the rapid development of my country's national economy, all walks of life have higher and higher requirements for the power supply quality and reliability of the power system, requiring continuous power supply, even in the event of a failure, the power supply can be restored in the shortest possible time . The automatic switching switch came into being. It is composed of one or several switching appliances and switching control parts. It can directly detect the changes of the corresponding parameters such as the voltage and frequency of the two access power sources and make logical judgments, so as to realize ...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: to provide an intelligent dual-power automatic switching switch and its operating method, the control part is composed of a single-chip microcomputer, which can directly and automatically detect the changes of the corresponding parameters of the voltage and frequency of the two-way access power supply and perform logic Judgment, when there is a problem in the power supply system, that is, when the voltage or frequency is abnormal, the motor rotates, and the circuit breaker is driven to operate through the mechanical interlocking structure to realize the automatic switching of the power supply, thereby overcoming the dual power supply automatic switching switch in the prior art. When the system has abnormal voltage or frequency problems, it cannot automatically switch the load circuit from one problematic power supply to another normal power supply.

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