Anti-icing coating for insulator

A technology for insulators and coatings, applied in the field of materials, can solve the problems of safe and reliable operation loss of power systems, affecting the safe and effective operation of power grids, and icing of transmission lines, so as to ensure safe and reliable power transmission, increase pollution flashover voltage, and reduce power loss. Effect

Inactive Publication Date: 2011-08-03
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ice flashover of insulators has seriously affected the safe and effective operation of the power grid
In recent years, with the aggravation and change of the global climate, when the cold winter comes, it is very easy to encounter severe rain and snow, which makes the transmission line seriously icy. Further expansion has caused huge losses to the safe and reliable operation of my country's power system

Method used

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  • Anti-icing coating for insulator

Examples

Experimental program
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Effect test

Embodiment 1

[0023] Embodiment 1 A kind of anti-icing coating for insulators

[0024] An anti-icing paint for insulators, the paint is composed of a high resistivity paint and a low resistivity paint, the high resistivity paint includes silicone rubber, and a semiconductor filler with a mass percentage of 0.1% is added to the silicone rubber Carbon black, high resistivity coatings with resistivity in the range of 10 14 More than Ω·cm; the low-resistivity coating includes silicone rubber, and in the silicone rubber, a semiconductor filler carbon black of 15% by mass percentage is also added, and the low-resistivity coating resistivity is at 10 5 ~10 9 within the range of Ω·cm.

[0025] The type of the carbon black is a special conductive carbon black with a chain-like conductive structure. The specific specifications of special conductive carbon black are shown in the table below.

[0026] BET specific surface area (m 2 / g)

[0027] see figure 1 , is a schematic diagram of ...

Embodiment 2 application Embodiment 1

[0028] Example 2 The effect of applying the 110kV insulator string anti-icing coating of Example 1

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Abstract

The invention discloses an anti-icing coating for an insulator. The anti-icing coating consists of a high-resistivity coating and a low-resistivity coating. The high-resistivity coating consists of silicon rubber and carbon black, wherein the weight percentage content of the carbon black is lower than 1 percent; and the high-resistivity coating is coated at the outermost edge of the skirt of the insulator. The low-resistivity coating consists of silicon rubber and carbon black, wherein the weight percentage content of the carbon black is between 10 percent and 30 percent; and the low-resistivity coating is coated on the surface of the insulator except the outermost edge. Two coatings with high resistivity and low resistivity are prepared respectively by adding carbon black into the silicon rubber according to different proportions; the upper surface and the lower surface of the skirt of the insulator are coated with the low-resistivity coating; and the outermost edge of the skirt of the insulator is coated with the high-resistivity coating. By adopting the high-resistivity coating, ice is prevented from growing at the skirt edge by adopting the high-resistivity coating, the flashover voltage is prevented from being lowered by ice bridging, the working stability of the insulator is enhanced, and safe and reliable power transmission is ensured.

Description

technical field [0001] The invention belongs to the field of materials, in particular, the invention relates to a coating for preventing ice formation on the edge of an insulator. Background technique [0002] The power system is exposed to the natural environment for a long time and is vulnerable to damage caused by various natural disasters. Ice disaster is one of the most serious threats to the power system. Statistics show that Henan, Shandong, Shaanxi, Shanxi, Hubei, Hunan, Jiangxi, Sichuan, Yunnan, Guizhou and other provinces have experienced severe ice damage in recent winters, including Liaoning in Northeast China, Shanxi in North China, Beijing and Tianjin, Inner Mongolia and Insulator ice flashovers have occurred in provinces (regions) such as Shandong, Shaanxi in the northwest, Henan, Hubei, Hunan and Jiangxi in central China, and Yunnan, Guizhou and Sichuan in the southwest. The problem of ice flashover on insulators has seriously affected the safe and effective...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/04C09D7/12C09D5/00H01B17/02
Inventor 彭向阳贾志东姚森敬许志海王红斌苏华锋韦晓星关志成毛先胤邓禹
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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