Supercapacitor based inductive energy-extracting power supply device of high-voltage measurement system

Abstract

The invention relates to a supercapacitor based inductive energy-extracting power supply device of a high-voltage measurement system. The inductive energy-extracting power supply device comprises a current transformer, a rectifying and filtering circuit, a DC / DC (direct current) module, a lithium battery, a power management module and supercapacitors. The current transformer extracts energy from a high-voltage cable inductively, and outputs stable voltage via the rectifying and filtering circuit and then via the DC / DC module. The power management unit comprises a supercapacitor charging control circuit and a lithium battery charging control circuit, the DC / DC module charges the supercapacitors through the supercapacitor charging control circuit, the supercapacitor supplies power to a load, meanwhile the DC / DC module charges the lithium battery through the lithium battery charging circuit, and the lithium battery supplies power to the load. The supercapacitor is adopted as an energy storing device, and the problem that a power supply device used for an existing on-line ring main unit monitoring system is few in recycling times, large in maintenance amount and large in volume, power cut is needed for modification of an existing ring main unit and the like are solved.

Description

technical field [0001] The invention relates to a power supply technology, in particular to a power supply device based on high-voltage measurement system induction energy harvesting. Background technique [0002] The power supply problem of high-voltage measurement system is a difficult point in engineering application at present, and the research on stable, reliable and low-power power supply has important engineering use value. [0003] At present, the commonly used power supply methods include solar energy, storage battery, laser function, bus induction energy acquisition, etc. Due to the large size of solar panels, it is not conducive to installation and is easily affected by the climate. It is not suitable for online equipment in the rainy and foggy climate conditions in the south; the voltage transformer has high insulation requirements and is susceptible to temperature, stray capacitance and Electromagnetic interference and other factors. Although the power output...

AI Technical Summary

Problems solved by technology

The experiment is complete with two-way energy harvesting, which solves the problems of the power supply device used in the existing ring network cabinet on-line monitoring system, such as less cycle times, large maintenance, large volume, and the need for power failure to transform the existing ring network cabinet.

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