Dual-power-supply switching auxiliary device and dual-power-supply switching control method

Abstract

The invention relates to the technical field of power distribution switching, in particular to a dual-power-supply switching auxiliary device and a dual-power-supply switching control method. The device comprises a main power supply detection unit, an auxiliary power supply detection unit, a judgment control unit and an electric energy output unit. Charging and discharging of the auxiliary power supply are judged through the charging and discharging judgment module, after the main power supply breaks down, electric energy switching of the electric energy switching module is controlled through the charging and discharging judgment module, the auxiliary power supply is made to rapidly enter a discharging state, and a power supply circuit is made to be normally switched; meanwhile, the electric energy is temporarily stored through the arranged electric energy buffer module, and when the main power supply and the auxiliary power supply are switched, the electric energy temporarily stored in the electric energy buffer module is released, so an electric energy gap in the switching process of the main power supply and the auxiliary power supply is filled, the circuit break condition in a period of time during the switching of the main power supply and the auxiliary power supply is avoided, and the normal power utilization of the power utilization circuit is ensured.

Description

technical field [0001] The invention relates to the technical field of power distribution switching, in particular to a dual power switching auxiliary device and a dual power switching control method. Background technique [0002] In order to ensure the uninterrupted operation of the operating equipment, two power supply inputs are usually set up, and the two power supplies are mutually backup. When one power supply fails, the other should be put into use immediately. At present, dual power supply switching devices are usually used in the industry. Dual power supply Switching devices include ATS, contactors, etc. Among them, using two contactors plus intermediate relay interlock is a low-cost method, but this method has defects: when a phase of the common power supply is missing or has other faults, the contactor The switch may not be able to switch to the backup power supply, and then the circuit that uses electricity will be temporarily disconnected, resulting in an impact...

AI Technical Summary

Problems solved by technology

[0002] In order to ensure the uninterrupted operation of the operating equipment, two power supply inputs are usually set up, and the two power supplies are mutually backup. When one power supply fails, the other should be put into use immediately. At present, dual power supply switching devices are usually used in the industry. Dual power supply Switching devices include ATS, contactors, etc. Among them, using two contactors plus intermediate relay interlock is a low-cost method, but this method has defects: when a phase of the common power supply is missing or has other faults, the contactor The switch may not be able to switch to the backup power supply, and then the circuit using electricity will be temporarily disconnected, resulting in an impact on the power consumption of the circuit

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