High voltage induction energy fetching power supply and method for obtaining power from high voltage line

Abstract

The invention provides a high-voltage inductive energy acquiring power supply and a method for acquiring the power supply from a high-voltage wire. The high-voltage inductive energy acquiring power supply comprises an energy acquiring unit for inducing a first electromotive force from the high-voltage wire, a compensating unit for inducing a second electromotive force different from the first electromotive force from the high-voltage wire and reversely compensating a part of the first electromotive force through the second electromotive force to finally balance output voltage, a surge protection unit connected to the energy acquiring unit and the compensating unit respectively, a rectifying filter unit connected to the surge protection unit and used for converting alternating current acquired by the energy acquiring unit and the compensating unit together into direct current and filtering the direct current, and a voltage reducing and stabilizing unit for stabilizing output voltage of the rectifying filter unit and reducing the stabilized voltage to be proper constant pressure output. Through introducing a compensating coil, the method uses difference of initial permeability of different magnetic materials to generate different electromotive forces to be reversely counteracted, so as to achieve wide-range compensation, output steady power, simplify circuits and reduce heat consumption.

Description

technical field [0001] The invention relates to the field of high-voltage power supply, in particular to a high-voltage induction energy harvesting power supply and a method for obtaining power from a high-voltage line for power supply. Background technique [0002] When conducting online monitoring of the status of power plants, substations and transmission and distribution lines, the power supply problem of high-voltage side electronic equipment has become a major obstacle hindering the development of this technology. Because the electronic equipment used for signal sensing and information transmission is located on the high-voltage side, it cannot be powered by a conventional power supply. [0003] At present, the power supply methods on the high-voltage side that are widely used include: battery power supply, line current induction power supply, capacitor voltage division energy power supply, laser power supply, and solar power supply. [0004] (1) Battery powered [0...

AI Technical Summary

Problems solved by technology

This method is environmentally friendly and energy-saving, but the disadvantage lies in the instability of the power supply, which is affected by factors such as light intensity, external environment temperature changes, and seasonal changes.

In addition, the conversion efficiency of solar cells is not high, which makes the energy provided by this method limited, thus restricting its application.

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