Multi-physics field coupling analogue simulation method and system for GIS disconnecting switch in different contact states

A contact state and isolation switch technology, applied in the field of multi-physics field coupling simulation, can solve the problems of high cost, difficult measurement of physical quantities, incomplete simulation results, etc., and achieve the effect of high accuracy and reliability

Active Publication Date: 2021-05-14
国网山西省电力公司超高压变电分公司
View PDF9 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The test method itself is expensive, and the physical quantities inside GIS are difficult to measure, so it is mainly used to assist verification
However, the existing simulation methods often ignore the influence of the air domain around the GIS, and use the equivalent convective heat transfer coefficient for equivalent, which is different from the actual situation.
And for the different contact states of the isolating switch, the existing simulation has not made a clear explanation, resulting in incomplete simulation results

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
  • Multi-physics field coupling analogue simulation method and system for GIS disconnecting switch in different contact states
  • Multi-physics field coupling analogue simulation method and system for GIS disconnecting switch in different contact states
  • Multi-physics field coupling analogue simulation method and system for GIS disconnecting switch in different contact states

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0137] In this embodiment, the multi-physics field coupling simulation method of the GIS isolating switch under different contact states includes the following steps:

[0138] (1) Set three typical contact states of the single-phase 220kV GIS isolating switch, and measure the loop resistance under different contact states on the test platform of the single-phase 220kV GIS isolating switch; the three typical contact states are respectively good contact , half-part half-combine and critical separation.

[0139] In described step (1), comprise the following steps:

[0140] S1-1, set the single-phase 220kV GIS isolation switch to be studied to have three contact states, which are good contact, half-open half-closed and critical separation.

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 multi-physics field coupling simulation method and system for a GIS disconnecting switch in different contact states, and the method comprises the steps: setting three typical contact states of the GIS disconnecting switch, and carrying out the measurement on a GIS disconnecting switch test platform, and obtaining the loop resistance in different contact states; secondly, establishing geometric models of the GIS disconnecting switch in different contact states, and setting material attributes of corresponding areas; comparing the simulation loop resistance with the test loop resistance to adjust the contact condition of the moving and static contacts; setting a physical field control equation, a boundary condition, an initial condition and a coupling variable; and finally, carrying out mesh generation on the solution domain by utilizing a finite element method, and solving the multi-physics field coupling mathematical model. The simulation method is closer to the actual working condition of the disconnecting switch, so that the accuracy and reliability of the simulation result are high. The method and system are beneficial to research of multiple physical fields and characteristics of the GIS disconnecting switch in different contact states, and are of great significance to safe and reliable operation of the GIS.

Description

technical field [0001] The invention relates to the field of power equipment state simulation analysis, in particular to a multi-physics field coupling simulation method and system under different contact states of a GIS isolating switch. Background technique [0002] With the development and evolution of power systems, gas insulated switchgear (GIS) has been widely used in high-voltage substations based on its advantages such as high operational reliability, long maintenance cycle, stable performance, and small footprint. Applications. As a key device in GIS, the disconnector can create an obvious break point, but it does not have the function of arc extinguishing. At the same time, the isolating switch is also a typical mechanical and electrical hybrid device, which is prone to failure during on-site operation. Among them, the deterioration of the mechanical state of the GIS isolating switch and the poor contact of the moving and static contacts caused by long-term frequ...

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): G06F30/23
CPCG06F30/23Y02E60/00
Inventor 李征宇高宝明王克胜许辉郭靖高晋文李琦严智牌永锋韩国文
Owner 国网山西省电力公司超高压变电分公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products