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Insulation materials for near-human parts of ultra-high voltage substations

A technology of insulating materials and substations, applied in the field of power equipment, can solve the problems of not meeting the application requirements of light weight, and achieve the effects of suppressing space charge accumulation, reducing surface charge accumulation, and optimizing electric field distribution

Active Publication Date: 2017-09-15
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditionally, micron particles are used to improve the dielectric breakdown performance of epoxy-based composite materials. Barium titanate is often used to increase the dielectric properties, and micron particles such as mica and clay are used to improve the breakdown performance. However, micron-sized inorganic oxides are used to There are some shortcomings in improving the dielectric and breakdown properties. It is necessary to increase the particle content to improve the dielectric and breakdown properties of the composite material, which cannot meet the requirements of lightweight applications.

Method used

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  • Insulation materials for near-human parts of ultra-high voltage substations

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preparation example Construction

[0036] The present invention also provides a preparation method for the above-mentioned insulating material of the near-human part of the ultra-high voltage substation, comprising the following steps:

[0037] 1) Add 0.1~1 parts by weight of sodium stearate to 15~45 parts by weight of distilled water, place in a magnetic stirrer, stir for 30~60 minutes at 25~35°C, and then add 3~8 parts by weight of nano-nitrided Boron, ultrasonically treated, filtered, and then dried at 50-60°C to obtain surface-modified nano-boron nitride;

[0038] 2) Add the surface-modified nano-boron nitride obtained in step 1) and 100 parts by weight of epoxy resin to the torque rheometer in sequence, and mix them at 160-200°C for 15-30 minutes to obtain nano-boron nitride-modified permanent epoxy resin, spare;

[0039] 3) Add 20-30 parts by weight of methyl vinyl silicone rubber and 0.5-2 parts by weight of nano-aluminum hydroxide to the torque rheometer, and mix at 140-170°C for 10-20 minutes to obtai...

Embodiment 1

[0050] Insulation material for near-person parts of ultra-high-voltage substations. The components and their contents are: 100 parts by weight of epoxy resin, 20 parts by weight of methyl vinyl silicone rubber, 3 parts by weight of nano-boron nitride, and 0.5 parts by weight of nano-aluminum hydroxide , 0.1 parts by weight of sodium stearate, 15 parts by weight of distilled water, 0.5 parts by weight of potassium hexatitanate whiskers, a mixture of silicon dioxide, silicon carbide, titanium dioxide and zinc oxide with a particle size of 20-50 nm (silicon dioxide: silicon carbide : The weight ratio of titanium dioxide: zinc oxide is 1:0.8:1.2:1.5) 5 parts by weight, 5 parts by weight of acetone, 0.5 parts by weight of maleic anhydride grafted polyethylene, 1 part by weight of magnesium hydroxide, and 0.5 parts by weight of antioxidant 300 parts by weight, 3 parts by weight of dibenzoyl peroxide.

[0051] A method for preparing an insulating material near a human part of an ultr...

Embodiment 2

[0059] Insulation material for near-human parts of ultra-high-voltage substations. The components and their contents are: 100 parts by weight of epoxy resin, 22 parts by weight of methyl vinyl silicone rubber, 4 parts by weight of nano-boron nitride, and 0.8 parts by weight of nano-aluminum hydroxide , 0.3 parts by weight of sodium stearate, 20 parts by weight of distilled water, 0.6 parts by weight of potassium hexatitanate whiskers, a mixture of silicon dioxide, silicon carbide, titanium dioxide and zinc oxide with a particle size of 20-50 nm (silicon dioxide: silicon carbide : The weight ratio of titanium dioxide: zinc oxide is 1:0.8:1.2:1.5) 8 parts by weight, 6 parts by weight of formaldehyde, 15 parts by weight of maleic anhydride grafted polypropylene, 2 parts by weight of magnesium hydroxide, and the antioxidant BBM is 0.6 Parts by weight, 3.5 parts by weight of triallyl isocyanurate.

[0060] A method for preparing an insulating material near a human part of an ultra-...

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Abstract

The invention belongs to the technical field of electric power equipment, and in particular relates to an insulating material near human parts of an ultra-high voltage substation. 3-8 parts by weight of boron, 0.5-2 parts by weight of nano-aluminum hydroxide, 0.1-1 part by weight of sodium stearate, 15-45 parts by weight of distilled water, 0.5-2 parts by weight of potassium hexatitanate whisker, 5 parts by weight of nano-inorganic powder ~20 parts by weight, 5~10 parts by weight of diluent, 0.5~5 parts by weight of compatibilizer, 1~5 parts by weight of flame retardant, 0.5~1 part by weight of antioxidant, and 3~5 parts by weight of crosslinking agent. The insulating material for the near-human part of the ultra-high voltage substation prepared by the invention can effectively inhibit the accumulation of space charges in the cable insulating material, improve the anti-aging performance of the material, have good mechanical properties, electrical properties and thermal properties, and excellent physical properties.

Description

technical field [0001] The invention belongs to the technical field of electric power equipment, and in particular relates to an insulating material for a part close to human beings in an ultra-high voltage substation. Background technique [0002] The ultra-high voltage transmission network is the backbone and core of the smart grid that State Grid is building. The construction of the ultra-high voltage transmission network can greatly improve the transmission capacity of my country's power grid and reduce the loss of long-distance power transmission. The safety and reliability of insulating materials widely used in electrical equipment poses significant challenges. High-performance insulating materials are the technical core and key of high-voltage and ultra-high-voltage power transmission and transformation equipment and networks. The level and stability of their electrical performance are directly related to the voltage level and safety of the entire power transmission ne...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/00C08L83/07C08K13/06C08K9/04C08K3/38C08K3/22C08K5/098C08K7/08C08K3/36C08K3/34
Inventor 王超李强高立飞王黎红
Owner STATE GRID CORP OF CHINA
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