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

A method for optimizing the potential distribution of arresters by changing the arrangement of voltage-equalizing capacitors

A voltage-equalizing capacitor and potential distribution technology, which is applied to overvoltage arresters, circuits, and electrical components using spark gaps. The effect of unevenness, optimized structure design, and improved operating life

Active Publication Date: 2022-03-25
WUHAN NARI LIABILITY OF STATE GRID ELECTRIC POWER RES INST +1
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a method for optimizing the potential distribution of the arrester by changing the arrangement of the voltage equalizing capacitors, which solves the problem of extremely uneven local potential distribution of the arrester unit and rapid deterioration of the local resistance sheet, and has The advantages of improving the operating reliability of the arrester and ensuring the safe operation of the power system

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
  • A method for optimizing the potential distribution of arresters by changing the arrangement of voltage-equalizing capacitors
  • A method for optimizing the potential distribution of arresters by changing the arrangement of voltage-equalizing capacitors
  • A method for optimizing the potential distribution of arresters by changing the arrangement of voltage-equalizing capacitors

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] see Figure 1-Figure 6 , a method for optimizing the potential distribution of the arrester by changing the arrangement of the equalizing capacitors, comprising the following steps:

[0050] Step 1: Establish the three-dimensional electrostatic field calculation model of the arrester. The arrester is an AC gapless oxide arrester with parallel voltage equalizing capacitors, which is composed of multiple units in series. The high voltage end of the arrester is equipped with a voltage equalizing ring. The material of the voltage equalizing ring is Made of aluminum, the low-voltage end is equipped with an insulating base and a metal bracket. Some units of the arrester have parallel voltage equalizing capacitors. The outer casing of the arrester is made of porcelain or organic composite materials. The numbers are, 1# unit, 2# unit, 3# unit....

[0051] Step 2: Carry out potential simulation calculation on the arrester. The electrostatic field analysis method is used in the ...

Embodiment 2

[0072] A method for optimizing the potential distribution of a lightning arrester by changing the arrangement of voltage equalizing capacitors, characterized in that it includes the following steps:

[0073] Step 1: See Figure 4 , to build a 750kV porcelain jacket AC gapless metal oxide surge arrester simulation model, the surge arrester is an AC gapless oxide surge arrester with parallel voltage equalizing capacitors, which is composed of multiple units connected in series, and the high voltage end of the arrester is equipped with a voltage equalizing ring. The ring is made of aluminum, and the low-voltage end is equipped with an insulating base and a metal bracket. There are parallel voltage equalizing capacitors in some units of the arrester, and the jacket of the arrester is made of porcelain or organic composite materials. The serial numbers of the low-voltage side are, 1# unit, 2# unit, 3# unit....

[0074] Step 2: See Figure 5 , considering the actual structure of 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 discloses a method for optimizing the potential distribution of a lightning arrester by changing the arrangement mode of voltage equalizing capacitors, comprising the following steps: step 1: building a three-dimensional electrostatic field simulation calculation model of the lightning arrester; step 2: using the finite element method to calculate the continuous operation of the lightning arrester Various data under voltage; Step 3: According to the potential distribution curve under the original design structure of the arrester, adjust the arrangement of parallel voltage equalizing capacitors inside the arrester. The invention has the advantages of improving the operation reliability of the arrester and ensuring the safe operation of the power system, and solves the problems of extremely uneven local potential distribution of the arrester unit and rapid deterioration of local resistance sheets, and is suitable for the power system.

Description

technical field [0001] The invention relates to the technical field of lightning protection, in particular to a method for optimizing the potential distribution of a lightning arrester by changing the arrangement mode of voltage equalizing capacitors. Background technique [0002] In the power system, the arrester is an indispensable overvoltage protection device. However, due to the large size and complex structure of ultra-high voltage and ultra-high voltage arresters, under high continuous operating voltage, the earth and the stray capacitance of the grounding body around the installation point and the charged body will seriously distort the axial potential distribution of the resistor. The resistor near the high-voltage end bears excessively high continuous operating voltage and thus bears a greater electrical stress load. In addition, the ultra-high voltage and ultra-high voltage surge arresters are designed with a high charge rate, and the deterioration of the local re...

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): H01T4/20
CPCH01T4/20
Inventor 谷山强曹伟吴钰颖万帅郭洁谭进刘新刘子皓杜雪松王智凯
Owner WUHAN NARI LIABILITY OF STATE GRID 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