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

Lightning arrester

A lightning arrester and arc extinguishing technology, applied in the field of lightning arresters, can solve the problems of failure of lightning arrester, decrease of resistance value of resistors, and reduction of line insulation level, etc., to ensure normal operation, reduce influence, and improve the effect of stability and reliability.

Active Publication Date: 2017-11-21
STATE GRID HUNAN ELECTRIC POWER +3
View PDF6 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Existing metal oxide arresters are prone to problems such as resistance drop and arrester failure due to the aging and damage of resistors, while single multiple short-gap arresters are prone to high-amplitude power-frequency freewheeling after the action of lightning waves, which is harmful to the power grid. It produces a large impact, so it must be used in conjunction with the automatic reclosing system, which reduces the insulation level of the line to a certain extent

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
  • Lightning arrester
  • Lightning arrester
  • Lightning arrester

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0034] see figure 1 As shown, the present invention proposes a lightning arrester, which includes an arc extinguishing section and a resistance section arranged coaxially, and both the arc extinguishing section and the resistance section are arranged vertically. The upper end of the arc extinguishing section is connected with the lower end of the resistance section, and the upper end of the resistance section is connected with the external earth.

[0035] The arc extinguishing section includes an epoxy mandrel 6 and an insulating spiral umbrella disk 5 spirally wound outside the epoxy mandrel 6 , and a plurality of arc extinguishing units are arranged at intervals along t...

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 relates to the field of a power system, and discloses a lightning arrester. The lightning arrester comprises an arc extinguishing segment and a resistance segment, wherein the arc extinguishing segment and the resistance segment are coaxially and vertically arranged, an upper end of the arc extinguishing segment is connected with a lower end of the resistance segment, an upper end of the resistance segment is connected with external ground, the arc extinguishing segment comprises an epoxy core rod and a spiral umbrella disc, the spiral umbrella disc is spirally wound around an outer side of the epoxy core rod, a plurality of arc extinguishing units are arranged at an outer edge of the spiral umbrella disc at intervals, the resistance segment comprises a cylindrical resistance body and a plurality of annular umbrella discs, the annular umbrella discs are sleeved at an outer side of the resistance body at intervals. By the lightning arrester, a lightning current is effectively released during lightning of a power transmission line, the current amplitude of a power frequency follow current after action of a lightning wave also can be limited, a circuit is prevented from being stricken, the power frequency follow current also can be effectively cut off even the resistance segment is damaged or failure, and the normal and stable running of the power transmission line is ensured.

Description

technical field [0001] The invention relates to the technical field of power systems, in particular to a lightning arrester. Background technique [0002] The phenomenon of lightning strikes widely exists in the power system. The tripping and blackout accidents of transmission lines caused by lightning strikes bring huge economic losses to the power system and also threaten the safe and stable operation of the power grid. The installation of line arresters is currently the main lightning protection method for transmission lines measure. [0003] In the existing metal oxide lightning arrester, when the resistor sheet is damaged, the resistance value of the resistor sheet will decrease, so that the arrester cannot cut off the power-frequency freewheeling current after the lightning wave acts, thereby making the arrester invalid. Although the existing multiple short-gap arresters can cut off large freewheeling currents, single multiple short-gap arresters are prone to high-amp...

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 Applications(China)
IPC IPC(8): H01C1/02H01C7/12
CPCH01C1/02H01C7/126Y02E10/72
Inventor 陆佳政谢鹏康蒋正龙李波方针胡建平
Owner STATE GRID HUNAN ELECTRIC POWER
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