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Method and device for simulating moving track of free particles in GIS

A technology of running trajectory and simulation method, which is applied in the direction of instrumentation, design optimization/simulation, electrical digital data processing, etc., can solve the problem of inaccurate judgment of particles, and achieve the effect of improving calculation efficiency and accuracy

Pending Publication Date: 2020-12-08
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD +1
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  • Description
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  • Application Information

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Problems solved by technology

At present, in the study of free particles, there are many studies on macroscopic electrical parameters, but it is impossible to accurately judge the trajectory of particles in GIS. Knowing the trajectory of particles in GIS is of great significance for analyzing the stability and control methods of GIS systems with particle defects. important meaning

Method used

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  • Method and device for simulating moving track of free particles in GIS
  • Method and device for simulating moving track of free particles in GIS
  • Method and device for simulating moving track of free particles in GIS

Examples

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Embodiment 1

[0054] see figure 1 , is a schematic flowchart of a method for simulating the trajectory of free particles in a GIS provided by Embodiment 1 of the present invention, and the method includes steps S101 to S103.

[0055] S101. Calculate the first force data of the particle before take-off; wherein, the first force data includes first Coulomb force and gravity.

[0056]Preferably, spherical particles are used as research objects in this embodiment, which is closer to the actual situation, and can effectively improve the accuracy and suitability of simulating the actual situation. Exemplarily, the particles are set as spherical particles, the material is Al, and ρ=2700kg / m 3 , the spherical particle radius a = 1mm. Secondly, the GIS unit segment mainly composed of long straight pipes is used as the research object in most areas of the cavity away from the insulator and the pipe interface, and the axial uneven electric field can be ignored. Exemplarily, the diameter of the busb...

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Abstract

The invention discloses a method for simulating the moving track of free particles in a GIS. The method comprises the steps that first stress data of the particles before take-off are calculated; wherein the first stress data comprises first coulomb force and gravity; when the particles meet a preset take-off condition, calculating second stress data of the particles after take-off according to GIS equipment parameters; wherein the second stress data comprises a second Coulomb force, an electric field gradient force and a gas viscous force; and constructing a particle moving track model according to the first stress data and the second stress data of the particles, and drawing a particle moving track according to the particle moving track model. The invention further discloses a device forsimulating the moving track of the free particles in the GIS, the moving track of the particles in the GIS can be effectively and accurately judged, and the calculation efficiency and accuracy of themoving simulation of the particles in the GIS can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of high-voltage electric tests, in particular to a method and device for simulating the trajectory of free particles in a GIS. Background technique [0002] The gas-insulated closed combination device (GIS) is filled with a certain pressure of sulfur hexafluoride (SF6) gas as the insulating medium. In GIS, the pot insulator is the main insulating part, which plays the role of insulating support and air chamber isolation. Under working conditions, defects such as cracks on the surface of pot insulators are likely to cause insulation failure due to expansion after a period of operation, which will cause flashover discharge problems along the surface in GIS. Therefore, research on crack growth in the strength test of pot insulators is carried out is of great significance. [0003] The trajectory of free conductive particles under power frequency voltage is significantly different from that under DC voltage. ...

Claims

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Application Information

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IPC IPC(8): G06F30/25G06F119/14
CPCG06F30/25G06F2119/14
Inventor 周福升高超黄若栋杨芸王国利黎卫国楚金伟刘婉莹
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
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