Lightning protection method for overhead transmission line

An overhead transmission line, lightning protection technology, applied in the installation of circuits, electrical components, cables, etc., can solve problems such as lightning strikes on overhead lines, and achieve the effect of solving lightning protection.

Active Publication Date: 2020-03-27
GUIZHOU POWER GRID CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In summary, how to solve the problem that there is still a certain probability of lightning strikes on overhead lines in the prior art has become an urgent problem to be solved by those skilled in the art

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  • Lightning protection method for overhead transmission line
  • Lightning protection method for overhead transmission line

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Embodiment Construction

[0022] Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but should not be used to limit the scope of the present invention.

[0023] In the description of the present invention, unless otherwise stated, the meaning of "plurality" is two or more; the terms "upper", "lower", "left", "right", "inner", "outer" , "front end", "rear end", "head", "tail", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than Nothing indicating or implying that a referenced device or element must have a particular orientation, be constructed, and operate in a particular orientation should therefore not be construed as limiting the invention. In addition, t...

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Abstract

The invention discloses a lightning protection method for an overhead transmission line, and the method comprises the steps: setting a main needle with an active discharge function on the overhead transmission line, and attracting thunder and lightning through the main needle during thunder and lightning; through the design of the method, the main needle capable of pre-discharging is installed onthe overhead line to actively attract thunder and lightning, and the problem of lightning shielding failure can be solved. According to the invention, the induction electrode of the main needle induces the change of a surrounding electric field to generate an electric potential, triggers the main pin of the main needle to discharge and attract thunder and lightning, enables the thunder and lightning to strike the main pin of the main needle, and then enables the lightning electric energy to be released to the ground soil through the discharge needle. The lightning arrester main needle discharges to attract lightning, so that the lightning strikes the main pin of the main needle, and the induction range of the main needle can be expanded to prevent a power transmission line from being struck by the lightning in a larger range.

Description

technical field [0001] The invention relates to the technical field of power system operation and maintenance protection, and more specifically relates to a lightning protection method for overhead transmission lines. Background technique [0002] Overhead lines mainly refer to the transmission lines in which overhead open wires are erected above the ground, and insulators are used to fix the transmission wires on the towers standing on the ground to transmit electric energy. [0003] As the climate worsens, power grid lightning accidents are becoming more and more serious, especially in our country, because of the special geological structure and complex meteorological environment, transmission lines are often laid in winding mountains, or along roads, railways, rice fields, and mountain tops. The particularity of the lightning environment faced by transmission line towers is even more severe. Moreover, overhead wires are generally bare metal wires, and under normal operat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G13/00H01T19/04
CPCH02G13/20H02G13/80H01T19/04
Inventor 李克明侯永洪陈友坤庄红军彭进聂刚刘峰海张坤钟以平莫刚聂晶何阳健陈杰李义吴瑀
Owner GUIZHOU POWER GRID CO LTD
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