Super-capacitor self-adaptive charging and discharging control system and control method

Abstract

The invention relates to a super-capacitor self-adaptive charging and discharging control system, which comprises a single-chip microcomputer, a charging and discharging circuit, and the super capacitor which are electrically connected in sequence, wherein a control module is arranged in the single-chip microcomputer, the control module is used for controlling the charging and discharging circuit to charge the super capacitor according to the change of the voltage, or controlling the charging and discharging circuit to enable the super capacitor to discharge to the load; when the voltage of the super capacitor is lower than a set value, the control module controls the charging and discharging circuit to charge the super capacitor; or, when the input voltage is lower than the set value, the control module controls the charging and discharging circuit to enable the super capacitor to discharge to the load. The invention further relates to a super-capacitor self-adaptive charging and discharging control method. According to the super-capacitor self-adaptive charging and discharging control system and the super-capacitor self-adaptive charging and discharging control method, intelligent control of different charging speeds is realized, and multistage conversion of the charging speeds can be realized; the single-chip microcomputer is connected into the circuit to monitor the voltage in real time; the current of each branch circuit can be controlled; and a super-capacitor charging mode, a maintaining mode and a discharging mode are freely switched.

Description

technical field [0001] The invention belongs to the technical field of DTU emergency power supply design, and in particular relates to a supercapacitor self-adaptive high-speed intelligent charging control circuit and a control method for DTU backup power supply. Background technique: [0002] In the field of power system distribution network automation, DTU devices (Data Transfer Unit, data transmission unit) are mainly used in urban, rural, and enterprise distribution network power supply systems. The functions of remote monitoring and fault identification, isolation and restoration of power supply in non-faulty areas play an important role in the reliability of distribution network power supply. [0003] Since DTU devices are generally installed in outdoor small switching stations, box-type substations and ring network cabinets, the working environment is relatively harsh, and its power supply reliability is an important factor restricting its working reliability. At pre...

AI Technical Summary

Problems solved by technology

At present, the backup power supply of DTU devices generally adopts the battery solution, but due to the poor high and low temperature resistance of the battery, the short service life, and the heavy maintenance workload, there are still major disadvantages as a backup power supply.

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