A method of suppressing the accumulation of electric charge on the surface of electric equipment

A technology of electric equipment and surface charge, applied in the direction of connecting contact materials, etc., can solve problems such as flashover, distortion of electric field distribution along the surface, and charge accumulation on the surface of supporting insulators, so as to prevent electrostatic shock, avoid electric field distortion, and reduce surface flashover network effect

Active Publication Date: 2019-07-05
YUNNAN KEWEI LIQUID METAL VALLEY R & D CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far, most GILs are only used in the field of AC power transmission. For DC GILs, due to the serious accumulation of charges on the surface of the supporting insulators, the distribution of the electric field along the surface is distorted, resulting in flashover in some cases, which limits the use of GILs in DC power transmission. Apply on a large scale

Method used

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  • A method of suppressing the accumulation of electric charge on the surface of electric equipment
  • A method of suppressing the accumulation of electric charge on the surface of electric equipment
  • A method of suppressing the accumulation of electric charge on the surface of electric equipment

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Embodiment 1

[0027] The present invention will be further described below in conjunction with accompanying drawing:

[0028] 1) When preparing liquid metal, according to the chemical composition of gallium-indium alloy in different proportions, weigh gallium metal and indium metal with a purity of 99.99% according to the mass ratio, and put the weighed two metals into the same beaker, Heat at 100°C until it melts evenly into a liquid state. Stir the mixture for 5 min with a magnetic stirrer or ultrasonically for 1 h in a water bath at 40° C. to ensure uniform mixing of the two to obtain a crude liquid metal gallium indium alloy.

[0029] 2) After that, put the gallium-indium alloy in the beaker, and then slowly add a 30% NaOH solution. Put the beaker on a magnetic stirrer and stir for 2h to remove the oxides generated by the alloy during the preparation process. After the reaction was complete, the gallium-indium alloy material in the beaker sank to the bottom of the beaker, while the so...

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Abstract

The invention relates to a method for suppressing electric equipment surface charge accumulation. A conductive coating is formed on the surface of an insulating medium of electric equipment, and a grounding lead is arranged on the surface of the conductive coating; and the conductive coating is obtained by two or more liquid metals. The method avoids electric field deformity, improves the withstanding voltage of the insulating medium, and lowers the possibility of problems of partial discharge and surface flashover of electric equipment.

Description

technical field [0001] The invention belongs to the field of electrical insulation of power equipment, and in particular relates to a method for successfully suppressing the accumulation of electric charges on the surface of power equipment based on liquid metal spraying technology. Background technique [0002] With the development of power grid construction, the voltage level is getting higher and higher, and the safety and stability of electrical insulation equipment are facing higher challenges. During the long-term operation of power equipment, due to the special shape of the insulating medium or the damage of the surface structure of some equipment due to long-term exposure to the air, the surface charge accumulation is relatively serious. The accumulation of charges can distort the distribution of the electric field, reduce the withstand voltage of the insulating medium, and increase the possibility of problems such as partial discharge and flashover along the surface...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01R4/64H01R4/66
CPCH01R4/64H01R4/66
Inventor 田汇冬邓中山王浩然王闯刘静
Owner YUNNAN KEWEI LIQUID METAL VALLEY R & D CO LTD
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