Wireless power supply system for power equipment of high-voltage transmission line

Abstract

The invention provides a wireless power supply system for power equipment of a high-voltage transmission line, and the system comprises an energy obtaining current transformer CT which is used for obtaining the electric energy from a high-voltage side; a transmitting end electric energy conversion device which is used for converting the obtained electric energy into a single-frequency high-frequency alternating current; an electric energy transmitting coil which is used for receiving the single-frequency high-frequency alternating current, and transmitting the electric energy to an electric energy receiving coil through resonance magnetic coupling; an electric energy receiving coil which is used for transmitting the received alternating current to a receiving end electric energy conversiondevice; the receiving end electric energy conversion device which is used for converting the received AC electric energy into DC electric energy, and outputting the DC electric energy to the power equipment of the high-voltage transmission line. The receiving end electric energy conversion device comprises a rectification module, an energy storage module, an overvoltage protection module, a DC/DCvoltage-stabilizing module and a power management module. The system also comprises an energy storage module which comprises a supercapacitor and a lithium battery. The system employs the supercapacitor, thereby enabling the energy density to be high, and enabling the conversion efficiency to be high. The system can provide reliable power in any environment.

Description

technical field [0001] The invention relates to a power supply system, in particular to a wireless power supply system for electrical equipment of high-voltage transmission lines. Background technique [0002] Wireless power supply refers to the power transmission method through non-physical contact. It is the third wireless revolution after wireless communication and wireless network. It is a cutting-edge technology with basic application significance. It has a wide range of cross-product applications and is expected to promote Even breakthroughs and innovations in the world's communications, electronics, Internet of Things, new energy and other industries. There are roughly two ways to realize wireless power transmission, one is the electromagnetic induction method of two coils, and the other is to transmit electric energy to the remote receiving antenna in the form of laser or microwave, and then process it through rectification, modulation, etc. , acting on the load. ...

AI Technical Summary

Problems solved by technology

However, the existing current transformer energy harvesting power supply has defects such as low efficiency, easy saturation of the iron core, unstable output voltage, and dead zone of power supply.

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