Power supply device and power supply method utilizing induced current in overhead ground wire

An overhead ground wire, induced current technology, applied in battery circuit devices, circuit devices, current collectors, etc., can solve the problems of large equipment, large current transformer ratio, inability to apply power supply, etc., to facilitate on-site installation and maintenance. , the effect of reducing installation weight and volume

Active Publication Date: 2021-02-12
CHINA ELECTRIC POWER RES INST
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under the rated current of 5%-120% (the rated current of the transmission line is between 2000A-5000A), the required power can be obtained by using one current transformer, but the current transformer involved in this method is relatively large and the equipment is huge , cannot be applied to the power supply of overhead ground wire induction current

Method used

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  • Power supply device and power supply method utilizing induced current in overhead ground wire
  • Power supply device and power supply method utilizing induced current in overhead ground wire
  • Power supply device and power supply method utilizing induced current in overhead ground wire

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Embodiment Construction

[0038] Exemplary embodiments of the present invention will now be described with reference to the drawings; however, the present invention may be embodied in many different forms and are not limited to the embodiments described herein, which are provided for the purpose of exhaustively and completely disclosing the present invention. invention and fully convey the scope of the invention to those skilled in the art. The terms used in the exemplary embodiments shown in the drawings do not limit the present invention. In the figures, the same units / elements are given the same reference numerals.

[0039] Unless otherwise specified, the terms (including scientific and technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it can be understood that terms defined by commonly used dictionaries should be understood to have consistent meanings in the context of their related fields, and should not be understood as idealized or over...

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Abstract

The invention provides a power supply device and power supply method using induced current in overhead ground wire. According to the device and the method, small current transformers and transformersare connected in series and in parallel to form a current source to provide charging current input for an energy storage unit, and whether a current input unit transfers input current in a bypass manner or not is controlled according to a signal of a current control unit, so that output power is adjusted. Compared with a traditional current transformer power supply mode, the power supply device and method adopt a series-parallel connection method of the plurality of small current transformers and transformers, and therefore, it is guaranteed that a power supply has sufficient output power whenthe induced current is small; meanwhile, the modular and miniaturized structure of an energy-taking power supply device is realized by means of the plurality of current transformers and transformers,so that the installation weight and size during field use are reduced, and the field installation and maintenance of a power tower are facilitated.

Description

technical field [0001] The invention relates to the field of power supply for a monitoring device on a tower of a power transmission line, and more particularly, relates to a power supply device and a power supply method using an overhead ground wire induced current. Background technique [0002] In order to speed up the construction of the power Internet of Things and smart grids, it is necessary to deal with the losses caused by natural disasters for transmission lines and towers. A large number of online monitoring equipment has been put into the power system. At present, common energy harvesting methods include: current transformer energy harvesting method based on transmission wire current, photovoltaic panel energy harvesting method, and special low-voltage mains power supply channel method. The energy harvesting power of the photovoltaic panel energy harvesting method is greatly affected by the environment. The current transformer energy harvesting method based on t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J50/00H02J50/10H02J7/34
CPCH02J50/00H02J50/10H02J7/345H02J2207/50
Inventor 李志远刘赫王浩哲方泳皓殷禹董勤晓李国富余辉周玮陈没雷雨秋叶天华
Owner CHINA ELECTRIC POWER RES INST
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