Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method and device for reducing impact grounding resistance of transmission line grounding body

A technology of impact grounding resistance and transmission lines, which is applied in the direction of line/collector components, circuits, connections, etc., can solve the problems of inability to reduce the influence of inductance, achieve enhanced spark effect, improve lightning resistance level, and reduce impact grounding resistance Effect

Active Publication Date: 2021-01-26
CHINA THREE GORGES UNIV
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This structure can effectively improve the impact characteristics of the grounding body and reduce the impact grounding resistance; but this method cannot reduce the influence of inductance

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and device for reducing impact grounding resistance of transmission line grounding body
  • Method and device for reducing impact grounding resistance of transmission line grounding body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] like figure 1 As shown, the method for reducing the impact grounding resistance of the grounding body of the transmission line includes the following steps,

[0023] Step 1: Set horizontal electrodes around the grounding body;

[0024] Step 2: Increase the inhomogeneity of the electric field near the horizontal electrode to enhance the spark effect;

[0025] Step 3: Set up the horizontal return electrode, and connect the horizontal return electrode to the horizontal electrode to reduce the overall inductance of the grounding body.

[0026] like figure 2 As shown, the grounding device adopting the above-mentioned method of reducing the impact grounding resistance of the grounding body of the transmission line includes a square grounding body 1, a horizontal ray electrode 2, a horizontal return electrode 3, and a needle-shaped conductor 6. The horizontal return electrode 3 is arranged on the horizontal ray Directly below the electrode 2 , the horizontal return electro...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for reducing impulse grounding resistance of a grounding body of a power transmission line. The method comprises the steps that horizontal electrodes are arranged around the grounding body; the nonuniformity of an electric field near the horizontal electrodes is increased, and the spark effect is enhanced; and horizontal backflow electrodes are arranged and connected with the horizontal electrodes, so that the total inductance of the grounding body is reduced. The invention further discloses a grounding device for reducing the impulse grounding resistance of the grounding body of the power transmission line. The grounding device comprises the grounding body, horizontal electrodes, horizontal backflow electrodes and needle-shaped conductors; the starting ends of the horizontal electrodes are connected with the grounding body; the horizontal backflow electrodes are connected with the tail ends of the horizontal electrodes through conductor blocks; and theneedle-shaped conductors are arranged around the horizontal backflow electrodes. Impulse grounding resistance is reduced by enhancing the spark effect and weakening inductance influence at the same time, the lightning resistance level of a power transmission line is improved, and safe and stable operation of the power transmission line is guaranteed. The needle-shaped conductors are not directlyconnected with the horizontal backflow electrodes, so that the electric field intensity near the grounding device is distorted on the premise of not increasing the inductance of the grounding device,and the spark effect is enhanced.

Description

technical field [0001] The invention belongs to the field of grounding of transmission lines, and in particular relates to a method and a device for reducing the impact grounding resistance of a grounding body of a transmission line. Background technique [0002] The grounding device of the transmission line is an important part of the lightning protection measures for the transmission line. Whether the line lightning protection can play a role mainly depends on the impact grounding resistance of the grounding device of the transmission line. Impulse grounding resistance refers to the resistance value shown when the grounding device flows through the lightning impulse current. In addition to the structure of the transmission line grounding device body affecting the impact contact resistance, the spark effect and the inductance influence also have a certain impact on the impact ground resistance; among them, the spark effect will reduce the impact ground resistance, and the i...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H01R4/66H01R43/00
CPCH01R4/66H01R43/00
Inventor 曹成张望邱立苏攀常鹏江进波熊奇陈龙
Owner CHINA THREE GORGES UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com