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Non-contact self-powered power supply for overhead high voltage line

A non-contact, self-powered technology, applied in the direction of electrical components, circuit devices, electromagnetic wave systems, etc., can solve the problem of easily burning power supply devices and electrical equipment, power-taking circuits that cannot work safely, and power-taking power that cannot provide sufficient power and other issues to achieve the effect of ensuring stable supply and long working hours

Inactive Publication Date: 2013-07-31
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

In the prior art, the power supply using the current transformer power supply scheme cannot guarantee that the power supply can always work safely and provide stable power output under the condition of large-scale changes in the current of the high-voltage transmission line. When the high-voltage bus is in a low current state, The power supply cannot provide enough power, and the power supply circuit cannot work safely when the high-voltage bus is in a state of high current. Burning of power supply units and electrical equipment

Method used

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  • Non-contact self-powered power supply for overhead high voltage line
  • Non-contact self-powered power supply for overhead high voltage line

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Embodiment Construction

[0012] The working principle of the high-voltage line non-contact self-feeding power supply is as follows: firstly, the alternating voltage of a certain size is directly induced from the primary side of the high-voltage line by using a special current transformer, and then processed by the corresponding rectification circuit and power conversion circuit, and finally Output stable DC voltage for load use.

[0013] Considering the safe and stable operation of the power supply under high-voltage bus and high current and extreme conditions, the following measures are specially taken:

[0014] 1. A method of shunting current through a double-coil winding current transformer is designed. The power circuit module provides the energy required for power supply work, while the control circuit module plays the role of consuming power and absorbing excess energy. The current offsets part of the magnetic flux generated on the transformer core, and finally achieves the effect of reducing t...

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Abstract

The invention discloses a non-contact self-powered power supply for an overhead high voltage line, belongs to the technical field of electrochemical engineering, and relates to an induced electricity taking device for an overhead high voltage power transmission line. The non-contact self-powered power supply comprises an opening and closing annular iron core mounted on the high voltage power transmission line, a power coil and a control coil wound on the annular iron core, a power circuit module, a leakage circuit module and a control circuit module. The power coil and the power circuit module induce to obtain electric energy from the high voltage line, and the control coil, the control circuit module and the leakage circuit module have shunt and current limiting effects. The self-powered power supply can work safely and provide stable power output all the time when the current of the high voltage power transmission line is changed in a wide range.

Description

technical field [0001] The invention relates to the field of electrical technology, and is an induction power-taking device used on an overhead high-voltage transmission line, which can provide continuous and stable power supply for monitoring equipment working on the high-voltage line. Background technique [0002] In order to realize real-time monitoring of the operating status of high-voltage transmission lines, some monitoring equipment needs to be installed. These devices require a lower-voltage regulated power supply. Since these monitoring devices are usually suspended on outdoor overhead high-voltage transmission lines and work in the air, it is difficult to directly supply power from the ground. Using battery power supply requires relatively high energy consumption for equipment, especially if the module needs wireless communication, the life time of battery power supply will be greatly shortened. Some monitoring equipment adopts the power supply method of solar ba...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J17/00H02J5/00H02J50/10
Inventor 王玉峰赵敏
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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