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Overvoltage protection device based on laser breakover transformer substation

A protection device and overvoltage technology, which is applied in the direction of emergency protection circuit device, emergency protection circuit device, circuit device, etc. for limiting overcurrent/overvoltage, and can solve the problem that the overvoltage protection device can only be used in this section of the line. Achieve the effects of extended protection range, fast response speed, and strong anti-interference ability

Inactive Publication Date: 2018-01-05
ZHANJIANG POWER SUPPLY BUREAU OF GUANGDONG POWER GRID CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention overcomes the defects of the existing overvoltage protection device and provides a new overvoltage protection device based on laser conduction substation
The invention adopts a segmented protection method, and solves the problem that the traditional overvoltage protection device can only be used for this section of the line by means of laser reflection, and the protection range is expanded.

Method used

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  • Overvoltage protection device based on laser breakover transformer substation
  • Overvoltage protection device based on laser breakover transformer substation

Examples

Experimental program
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Effect test

Embodiment 1

[0037] Embodiment 1 is that the present invention is applied to one of the conductors of the utility pole.

[0038] Such as figure 1 As shown, an overvoltage protection device based on a laser conduction substation includes a voltage detection module, a control module, a pair of metal electrodes 7, an excitation electrode 6, a laser generator 9, two mirrors 4, a protective cover 3, and a control Motor 8, wire clamp 1 and metal rod 10, wherein,

[0039] The clamp 1 is electrically connected to the insulator 11 , and the clamp 1 is sleeved on the wire 2 .

[0040] A pair of metal electrodes 7 are electrically connected to the upper and lower ends of the insulator 11;

[0041] A voltage detection module is arranged on the wire 2, and the output terminal of the voltage detection module is connected to the input terminal signal of the control module;

[0042] The excitation electrode 6 is arranged on the metal electrode 7 at the lower end of the insulator 11;

[0043] The contr...

Embodiment

[0050] Embodiment specific implementation process:

[0051] Embodiment 1 is that the present invention is applied to one of the conductors of the utility pole.

[0052] When the voltage detection module detects an overvoltage, it sends a detection signal to the control module. The control module controls the laser generator 9 to generate laser light. The control module adjusts the angle of the mirror 4 by controlling the motor 8 . The laser light reaches the excitation electrode 6 through the reflection of the mirror 4 , thereby forming an electric field between the metal electrodes 7 . The overvoltage passes through the metal electrode 7 to the metal rod 10 through the electric field, and is discharged from the metal rod 10 to the ground, so as to protect insulators and insulated wires.

Embodiment 2

[0054] Taking Embodiment 1 as a unit, Embodiment 2 can be obtained by extending. By installing the part of embodiment 1 except the laser generator 9 on the ABC three-phase wire 2 on the utility pole, through an angle-adjustable reflector 4, only one laser generator 9 is needed to make the laser light reach any one on the utility pole. On the excitation electrodes 6 of the ABC three-phase, so that the corresponding metal electrodes 7 are turned on. The lightning passes through the metal electrode 7 to reach the metal pole 10 through the electric field, and discharges from the metal pole 10 to the ground, so as to protect the corresponding insulators and insulated wires. Embodiment 2 adopts a section-type protection method, which can protect the entire utility pole or even several utility poles, which solves the problem of only this segment of the line in Embodiment 1, and the protection scope is expanded.

[0055] The same or similar reference numerals correspond to the same o...

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PUM

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Abstract

The invention discloses an overvoltage protection device based on a laser breakover transformer substation. The overvoltage protection device comprises M voltage detecting modules, a control module, Mpairs of metal electrodes, a laser module and M metal rods, wherein M is a positive integer not greater than 3, each pair of metal electrodes is electrically connected with the upper end and the lower end of an insulator, the voltage detecting modules are arranged on a telegraph pole, the output ends of the voltage detecting modules are in signal connection with the input end of the control module, the laser module forms an electric field between two metal electrodes through laser and makes voltage discharged into the ground through the electric field, the control end of the laser module is in signal connection with the output end of the control module, one end of a metal rod is electrically connected with the metal electrode at the lower end of the insulator, and the other end of the metal rod is grounded. The overvoltage protection device adopts a laser breakover gap, is high in reaction speed and good in antijamming capability and is basically not affected by factors such as humidity and surrounding tree buildings. In addition, a protection ragen is widened by adopting a sectional protection mode.

Description

technical field [0001] The invention relates to the field of parallel protection gaps, in particular to an overvoltage protection device based on laser conduction substations. Background technique [0002] Substation overvoltage has always been an important problem to be solved urgently in substations, because overvoltage can occur at any time, and there are many inducing factors. Substation overvoltages come from internal overvoltages, including operating overvoltages and ferromagnetic resonance overvoltages; at the same time, external overvoltages are always threatening the safe operation of substations. In order to solve these problems, people adopt the method of installing lightning rods and lightning arresters to eliminate the influence of overvoltage. However, the lightning rod can only protect against direct lightning overvoltage, and the lightning arrester can only be effective within a short distance. With the continuous improvement of substation intelligence, con...

Claims

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Application Information

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IPC IPC(8): H02H9/04
Inventor 黄观荣黄国栋王平波刘建明李知城欧英龙黄锐杰戴宇龙雄峰
Owner ZHANJIANG POWER SUPPLY BUREAU OF GUANGDONG POWER GRID CO LTD