Electricity picking device for high-voltage power transmission line

Abstract

The invention discloses an electricity picking device for a high-voltage power transmission line. The electricity picking device comprises a voltage transformator, electricity consumption equipment and a wireless electric energy transmission module, wherein the voltage transformator and the electricity consumption equipment are connected onto the voltage power transmission line, the wireless electric energy transmission module is connected between the e voltage transformator and the electricity consumption equipment, and comprises an AC-DC (alternating current to direct current) converter, and the AC-DC converter is connected with the voltage transformator and is sequentially connected with a high-frequency inverter, an emitting coil, a receiving coil, a rectifying circuit and a DC-DC (direct current to direct current) converter. The electricity picking device has the advantages that electricity is directly picked from the high-voltage power transmission line, and in addition, the electricity is converted into stable direct current electricity to be supplied to the electricity consumption equipment arranged on the voltage power transmission line to be used, wherein the distance between the emitting coil and the receiving coil in the wireless electric energy transmission module is at least 30cm, so that electric isolation being at least 30cm exists between the high-voltage end of the electricity network and the low-voltage end of the electricity consumption equipment, and the safety of the electricity consumption equipment and the reliable operation of the high-voltage power transmission line are ensured.

Description

technical field [0001] The invention relates to the application field of wireless power transmission and the field of high-voltage power grid, in particular to a power-taking device for a high-voltage transmission line. Background technique [0002] It is often necessary to install some auxiliary equipment for monitoring and monitoring the condition of the line on the high-voltage transmission line, and these equipment need to use a lower voltage regulated DC power supply. At present, the power supply methods for auxiliary equipment on high-voltage transmission lines mainly include the following: [0003] (1) Solar panels are used for power supply, but solar panels need to be maintained or replaced after a period of long-term operation, which requires power outages on important transmission lines, so this method is unreliable, and maintenance is difficult and costly ; [0004] (2) Laser power supply through optical fiber, but it has the disadvantage of small power supply, ...

AI Technical Summary

Problems solved by technology

[0003] (1) Solar panels are used for power supply, but solar panels need to be maintained or replaced after a period of long-term operation, which requires power outages on important transmission lines, so this method is unreliable, and maintenance is difficult and costly ;

[0004] (2) Laser power supply through optical fiber, but it has the disadvantage of small power supply, and because laser transmitters, optical fibers, photoelectric converters and other equipment are prone to aging, it is easy to affect the quality of power supply;

Since the primary side current of the current transformer varies greatly, from a few amperes to thousands of amperes, this power supply method is very unstable

Images