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

Method and system for determining serial and parallel connection gaps of overhead power transmission line insulators

A technology for overhead transmission lines and insulator strings, which is applied in the direction of overhead installation, cable installation, suspension/strain insulators, etc. It can solve problems such as difficulties in operation and maintenance of transmission lines, zero-value insulators, insulators falling off strings, power outages, and damage to insulators. Psychological hidden dangers and the effect of reducing the accident rate

Active Publication Date: 2010-05-26
CHINA ELECTRIC POWER RES INST +1
View PDF0 Cites 28 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Power frequency continuous current after lightning flashover damages insulators and their fittings, resulting in zero-value insulators and even insulator drop-off and power outage accidents, which brings great difficulties to the operation and maintenance of transmission lines

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 system for determining serial and parallel connection gaps of overhead power transmission line insulators
  • Method and system for determining serial and parallel connection gaps of overhead power transmission line insulators
  • Method and system for determining serial and parallel connection gaps of overhead power transmission line insulators

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] The present invention will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are illustrated. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention.

[0034] The starting point of the present invention is to rationally design the lightning protection device for the parallel gap between the insulators of the transmission line on the basis of the configuration of the existing transmission line insulators in my country and under the insulation coordination regulations.

[0035] Under the guidance of the "drainage type" lightning protection idea, the applicant proposed a lightning protection scheme for installing parallel gaps in insulator strings of transmission lines that are often struck by lightning. The lightning protection principle of the parallel gap is as f...

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 and a system for determining serial and parallel connection gaps of overhead power transmission line insulators, wherein the method comprises the following steps of: determining the structures and the shapes of parallel connection gaps according to thunder impulse discharge characteristics; determining the structures and the shapes of the parallel connection gaps according to electric-field intensity distribution; determining the structures and the shapes of the parallel connection gaps according to power frequency arc motion characteristics; determining the space magnetic-field distribution of the parallel connection gaps according to the structures and the shapes of the parallel connection gaps; building an arc motion model of the parallel connection gaps by adopting an arc segmented model to simulate the motion processes of arc roots and arc columns of power frequency arcs under the actions of a space magnetic field and wind force; emulating the arc motion characteristics generated by various different structures and shapes of the connection parallel gaps by utilizing the arc motion model; and determining the structures and the shapes of the parallel connection gaps according to the influences of various different structures and shapes of the parallel connection gaps on the arc motion processes. The parallel connection gaps take account of both the advantages and the defects between the lightning outage rate of a line and the failure rate of the line.

Description

technical field [0001] The invention relates to the field of lightning protection for transmission lines, and more particularly, to a method and system for determining the series-parallel gap of insulators on overhead transmission lines. Background technique [0002] Lightning protection of overhead transmission lines has always been a subject of great concern to electric power workers. In recent years, lightning faults are still one of the main factors affecting the safe operation of lines. Power frequency continuous current after lightning flashover damages insulators and their fittings, resulting in zero-value insulators and even insulator string outage accidents, which brings great difficulties to the operation and maintenance of transmission lines. [0003] Due to the weak grid structure, poor switching performance, and the large impact of breaking fault current on the grid and equipment in the early days, the operators one-sidedly pursued to reduce the lightning tripp...

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
IPC IPC(8): H02G7/00H02G13/00H01B17/04
Inventor 陈维江孙昭英王献丽李红李庆余张翠霞叶宽颜湘莲谷山强葛栋
Owner CHINA ELECTRIC POWER RES INST
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