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

Metal-fitting corona onset voltage determination method based on finite-element electric-field simulation

A technology of corona inception voltage and electric field simulation, applied in design optimization/simulation, electrical digital data processing, special data processing applications, etc., to achieve the effect of high test cost

Inactive Publication Date: 2018-04-20
STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST +1
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to seek a theoretical calculation method that can consider the actual electromagnetic environment in which the metal fittings operate, and solve the problem of determining the corona inception voltage. The present invention proposes a method for determining the corona inception voltage of metal fittings based on finite element electric field simulation.

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
  • Metal-fitting corona onset voltage determination method based on finite-element electric-field simulation
  • Metal-fitting corona onset voltage determination method based on finite-element electric-field simulation
  • Metal-fitting corona onset voltage determination method based on finite-element electric-field simulation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] The specific embodiment of the present invention is as figure 1 shown.

[0027] The steps of the method for determining the corona inception voltage of fittings based on finite element electric field simulation in this embodiment are as follows:

[0028] 1. Start ANSYS software to establish the finite element model of hardware and equipment.

[0029] 2. Calculate the voltage as U 0 electric field distribution at .

[0030] 3. Intercept the normal path of the highest field strength part of the fittings, and derive the field strength distribution E of the path 0 to xls file; E 0 is the field strength in the normal direction, (E 0 / Ec=U 0 / Uc).

[0031] 4. Calculate U C Electric field distribution under voltage E C , ionization coefficient α, adhesion coefficient η and other parameters.

[0032] 5. Calculate

[0033] 6. Judgment N eph Is it greater than or equal to 1, if N eph If less than 1, the corona onset voltage U of the metal fittings can be obtained ...

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 metal-fitting corona onset voltage determination method based on finite-element electric-field simulation. According to the method, a finite-element electric-field simulationcalculation model under an actual working condition of a metal fitting is established, and electric-field distribution thereof under rated voltage U<0> is calculated; and a corona discharging calculation physical-model is established, and a field strength value of a normal direction of highest field strength is imported into a corona onset voltage calculation program through software to obtain corona onset voltage of the metal fitting. According to the method, corona onset voltage of complex-structure metal-fittings under actual running environments can be estimated, and an important reference basis can be provided for super / ultra-high-voltage metal-fitting design.

Description

technical field [0001] The invention relates to a method for determining the corona inception voltage of metal fittings based on finite element electric field simulation, and belongs to the technical field of ultra-high voltage engineering. Background technique [0002] EHV / UHV power transmission and transformation projects require a large number of connection and voltage equalization fittings. The fittings are generally located in a complex electromagnetic environment, with high voltage and numerous equipment, and the electric field distribution is complicated, which has a great influence on the corona inception voltage characteristics of the fittings. At present, the common methods for determining the corona inception voltage of fittings are generally determined through experiments and theoretical calculations. The test method has high requirements for test equipment and personnel, and is generally different from the electromagnetic environment where the fittings are in du...

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): G06F17/50
CPCG06F30/23Y02E60/00
Inventor 邓志祥蔡木良范瑞祥王华云李升健郑蜀江陈霖邓杰李博江
Owner STATE GRID JIANGXI ELECTRIC POWER CO LTD 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