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Electricity-heat-gas multi-stress combined aging experiment platform and experiment method for insulating material

A technology of insulating materials and aging experiments, applied in the field of high-voltage insulation, to achieve the effect of convenient experimental operation

Inactive Publication Date: 2021-07-09
XI AN JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the existing experimental platforms generally can only conduct thermal aging or thermoelectric aging experiments on epoxy insulating materials before carrying out flashover experiments along the surface. Related reports on flashover stability test

Method used

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  • Electricity-heat-gas multi-stress combined aging experiment platform and experiment method for insulating material
  • Electricity-heat-gas multi-stress combined aging experiment platform and experiment method for insulating material
  • Electricity-heat-gas multi-stress combined aging experiment platform and experiment method for insulating material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0070] The surface flashover performance test of epoxy micro-composite insulating materials after electric-thermal-gas multi-stress combined aging is as follows:

[0071] 1) Take the epoxy micro-composite insulating material and pretreat it. The specific operation of pretreatment is: use absolute ethanol and deionized water, clean it with an ultrasonic cleaner for 30 minutes, remove dust and stains on the surface, and place it in a vacuum oven at 60°C , drying for 12 hours, so that the drying degree of the epoxy micro-composite insulating material meets the specified experimental requirements;

[0072] 2) Put the epoxy micro-composite insulating material in the finger electrodes, the electrode spacing is 5mm, connect the two tail ends of the finger electrodes with the high voltage electrode 1 on the cavity wall with high voltage resistant wires.

[0073] 3) After the experimental cavity 8 is evacuated by the vacuum pump 15, the gas injection port 11 and the SF 6 The gas cylin...

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Abstract

The invention discloses an electric-thermal-gas multi-stress combined aging experiment platform and an experiment method for an insulating material. The platform comprises a plurality of experiment cavities, wherein tops of the experiment cavities are connected with sealing covers, and the sealing covers are connected with heating rings and temperature sensor probes which are inserted into the experiment cavities; the heating ring and the temperature sensor probe are jointly connected to a temperature controller, an insulating plate is arranged on the inner side of the bottom of the experiment cavity, two high-voltage electrodes are symmetrically arranged on a cavity wall of the experiment cavity, one high-voltage electrode is connected to a high-voltage end of an aging voltage source, and the other high-voltage electrode is grounded; a plurality of experiment cavities are connected in parallel to an aging voltage source, and the insulating plate is used for placing a group of discharge electrodes for applying voltage to the insulating material. The experimental platform is reasonable in structural design, small in occupied area, convenient to operate and capable of achieving long-term heating and pressurizing experiments in different atmospheres.

Description

technical field [0001] The invention belongs to the technical field of high-voltage insulation, and in particular relates to an electric-thermal-gas multi-stress combined aging experiment platform and an experimental method for insulating materials. Background technique [0002] As an excellent insulating material, epoxy resin and its composite materials have been used as the main insulating material for basin insulators in high-voltage gas insulated switches (GAS INSULATED SWITCHGEAR, GIS) because of their good insulating and mechanical properties, low cost and easy access. . The flashover along the gas-solid interface restricts the development of high-voltage equipment in the direction of UHV and miniaturization. Improving the flashover performance of the gas-solid insulation system along the surface is of great significance to ensure the safe and reliable operation of power equipment. At present, there are many methods for surface treatment of insulating materials to im...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12G01R31/20G01N17/00
CPCG01N17/00G01R31/1263G01R31/20
Inventor 李盛涛牛欢李明儒唐樊范伟博毛航银刘晔
Owner XI AN JIAOTONG UNIV
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