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Anti-freezing heating functional coating for transmission line conductor

A technology for functional coatings and power transmission lines, applied in epoxy resin coatings, coatings, etc., can solve the problems of difficult construction of magnetic materials with low Curie temperature, poor use effect of anti-icing coatings, and high cost, and achieve anti-icing effect. Good, simple construction, low cost effect

Active Publication Date: 2010-02-03
CHINA ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of difficult construction, heavy load, and high cost of low Curie temperature magnetic materials, and the currently developed anti-icing coatings have poor application effects. The low Curie temperature magnetic materials are made into powder and added as fillers. Apply the coating system on the surface of the wire or wire monofilament, and use it to generate power loss and heat generation under the action of an alternating magnetic field to prevent or slow down freezing rain on the surface of the wire.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: Low Curie temperature ferromagnetic powder addition 75%, E20: polyammonia 100: 70, low Curie temperature ferromagnetic powder material is LaFeAl series magnetocaloric material, powder surface is covered with copper, Curie temperature 23 ℃, 0 ℃ saturation magnetic induction intensity 0.35T, single weight calorific value 18W / kg. The paint is applied on the LGT-400 / 50 transmission line, and 200A current is applied. The test conditions in the climate chamber are the average temperature of -3.5°C, the minimum temperature of -10°C, and the average wind speed of 3m / s. The test has an obvious anti-icing effect.

Embodiment 2

[0016] Embodiment 2: the low Curie temperature ferromagnetic powder addition is 90%, E20: polyammonia 100: 80, the low Curie temperature ferromagnetic powder material composition is FeNi 30 Material, copper-clad powder surface, Curie temperature 80°C, saturation magnetic induction 0.52T at 0°C, calorific value per unit weight 16W / kg. The paint is applied on the LGT-400 / 50 transmission line, and 180A current is applied. The test conditions in the climate chamber are the average temperature of -3.5°C, the minimum temperature of -10°C, and the average wind speed of 3m / s. The test has an obvious anti-icing effect.

Embodiment 3

[0017] Embodiment 3: The addition amount of low Curie temperature ferromagnetic powder is 85%, E20: polyammonia 100: 85, the composition of low Curie temperature ferromagnetic powder material is: LaFeAl series magnetocaloric material, powder body surface is covered with copper, The inside temperature is 30°C, the saturation magnetic induction at 0°C is 0.5T, and the calorific value per unit weight is 20W / kg. The coating is applied on the LGT-400 / 50 transmission line, and a current of 150A is applied. The test conditions in the climate chamber are the average temperature of -3.5°C, the minimum temperature of -10°C, and the average wind speed of 3m / s. The test has an obvious anti-icing effect.

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Abstract

The invention relates to an anti-freezing heating functional coating for a transmission line conductor. In the invention, a low Curie temperature ferromagnetic filler with a heating function is addedinto the coating and coated on the outer surface of the conductor or conductor monofilament under the action of an alternating magnetic field of a high voltage conductor, and the low Curie temperatureferromagnetic material can generate energy loss to release heat under the action of the alternating magnetic field of the high voltage conductor so as to prevent or postpone frozen freezing rain on the conductor surface. The coating has good ice-coating resistant and anti-icing effect, low energy consumption, low cost, simpler construction, no need of any line reconstruction and very wide application prospect.

Description

technical field [0001] The invention belongs to the field of heating materials and safe operation of power grids, and in particular relates to a heating function coating used for anti-freezing of transmission line conductors. Background technique [0002] At the beginning of 2008, the most serious freezing disaster occurred in most parts of southern China and the eastern part of Northwest my country, which caused serious damage to the power grid and caused great attention from the national electric power and related departments. At the same time, a climax of anti-icing and anti-icing technology research has also been set off. Dozens of anti-icing and anti-icing methods that have been studied at home and abroad have been re-examined again. Among them, during the "Seventh Five-Year Plan" period, Wuhan High Voltage Research Institute and Shougang Metallurgical Research Institute and other units jointly developed technologies such as low Curie temperature ferromagnetic material ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D7/12C09D5/00
Inventor 徐丽陈新杨建平药宁娜王秋玲张卓何州文刘辉兰逢涛
Owner CHINA ELECTRIC POWER RES INST
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