An advance discharge device and method for realizing dynamic insulation coordination

A technology of early discharge and dynamic insulation, applied in the direction of insulators, circuits, electrical components, etc., can solve the problems of ineffective areas of insulation coordination, and achieve the effects of ensuring the safety of lightning strike protection, smooth volt-second characteristics, and reduced amplitude and steepness

Active Publication Date: 2021-11-23
GUANGXI UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This solves the problem that there is an invalid area in the insulation coordination caused by the protrusion of the volt-second characteristic

Method used

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  • An advance discharge device and method for realizing dynamic insulation coordination
  • An advance discharge device and method for realizing dynamic insulation coordination
  • An advance discharge device and method for realizing dynamic insulation coordination

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Embodiment Construction

[0040] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many of the details listed in the specification are only for readers to have a thorough understanding of one or more aspects of the present invention, and these aspects of the present invention can be implemented even without these specific details.

[0041] According to the above principle description and reference figure 1 The embodiment of the present invention is further described:

[0042] Such as Figure 1-2 As shown, an early discharge device for dynamic insulation coordination includes an insulator string 1 and a cross arm 2. Sensing device, high voltage pulse generator 3, insulating tube 4, arc extinguishing device 5, upper electrode 6 and lower electrode 7, the thunder cloud sensing device is conne...

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Abstract

The invention discloses an early discharge device and method for realizing dynamic insulation coordination, which belongs to the technical field of early discharge. The device includes an insulator string and a cross arm, the cross arm is arranged on a tower pole, and the insulator string is arranged on the cross arm , also includes a thundercloud induction device, a high-voltage pulse generator, an insulating tube, an arc extinguishing device, an upper electrode and a lower electrode, and the thundercloud induction device is connected with the high-voltage pulse generator to sense a thundercloud signal and trigger the high-voltage pulse generator, so The output end of the high-voltage pulse generator is connected to the upper electrode through an insulating tube through a wire, and the upper electrode is arranged in the arc extinguishing cylinder of the arc extinguishing device. The present invention generates free electrons through the early discharge of the high-voltage pulse generator, so that the gap breakdown does not depend on the influence of the steepness and amplitude of the lightning current, and the volt-second characteristics are more gentle, so that the amplitude and amplitude of the intruding lightning wave in the line after the gap action The steepness is reduced to ensure safety against lightning strikes such as power plants and substations.

Description

technical field [0001] The invention relates to the technical field of early discharge, in particular to an early discharge device and method for realizing dynamic insulation coordination. Background technique [0002] Lightning strikes can cause different forms of damage and destruction to power facilities. Thundercloud discharge can cause lightning strike overvoltage in the power system, which can be divided into direct lightning strike overvoltage and induced lightning strike overvoltage. Lightning overvoltage may cause damage to insulators and transmission lines; the impact flashover caused by lightning strikes on transmission lines will cause flashover of line insulators, and then generate a large power frequency continuous current, damage insulator strings and fittings, and cause line accidents; Electric shock on the transmission line or lightning protection line may cause broken strands or even rupture, making the power transmission work impossible. [0003] The exis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01T1/02H01T4/08H01B17/46H01B17/48
CPCH01B17/46H01B17/48H01T1/02H01T4/08
Inventor 徐宇恒庞智毅唐佳雄黄上师杨倩颖王嬿蕾王巨丰李籽剑王锟
Owner GUANGXI UNIV
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