Transmission line lead anti-icing compound coil based on ferrite and preparation method thereof

A transmission line and ferrite technology, applied in the direction of circuits, conductors, electrical components, etc., can solve the problems of low heat generation, fixed form, and high cost of anti-icing materials for transmission wires, and achieve light load, increased winding thickness, and low cost. low effect

Inactive Publication Date: 2013-12-11
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention aims to solve the problems of low calorific value, high cost, large load and fixed form of anti-icing materials for transmission wires, and provides anti-icing composite coils for transmission line wires based on ferrite and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0011] Specific Embodiment 1: The anti-icing composite coil for transmission line conductors based on ferrite in this embodiment is prepared from 60 to 80 parts by mass of ferrite magnetic material powder and 15 to 25 parts of polymer base material The thickness of the anti-icing composite coil for transmission line conductors based on ferrite is 2 mm to 10 mm; wherein the ferrite magnetic material powder is a low Curie material with a Curie temperature of 0 to 30 ° C. temperature magnetic material.

[0012] The composite coil of this embodiment has the following advantages: (1) The Curie temperature of the ferrite magnetic material powder of this embodiment is 0-30°C, the Curie temperature is low, it does not participate in conduction, and the loss at room temperature is less than 5W / kg, which reduces the wire consumption; (2), the saturation magnetic induction of the ferrite magnetic material powder in this embodiment is relatively low or even close to 0 when the ambient te...

specific Embodiment approach 2

[0013] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the anti-icing composite coil of the transmission line wire based on ferrite consists of 70 parts by mass of ferrite magnetic material powder and 20 parts of high The molecular base material is prepared, and the thickness of the anti-icing composite coil for transmission line conductors based on ferrite is 4mm. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0014] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the ferrite magnetic material powder is composed of 18 to 25 parts by mass of ferric oxide and 9 to 13 parts of metal The ferrite magnetic material powder is a low Curie temperature magnetic material with a Curie temperature of 0-30°C. Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention discloses a transmission line lead anti-icing compound coil based on ferrite and a preparation method thereof, and relates to the fields of a magnetic heating material and safe operation of a power grid, in order to solve the problems of low heat productivity, high cost, large load and fixed form of the anti-icing material of a transmission conductor. The product is prepared from ferrite magnetic material powder and polymer base stock. The method comprises the following steps: weighing the ferrite magnetic material powder, the polymer base stock, a plasticizer, a lubricating agent and an antioxidant; and extruding and drying by an extruder after stirring, so as to obtain the compound coil of which the thickness is 2-10mm, wherein the loss at normal temperature is less than 5 W/kg, the saturation flux density when the temperature is lower than 0 DEG C can be up to 0.85T, and the single calorific value at -5 DEG C to 0 DEG C can be up to 32 W/kg under an alternating magnetic field of 50Hz. Thus, the anti-icing compound coil can be applied to the fields of the magnetic heating material and safe operation of the power grid.

Description

technical field [0001] The invention relates to the fields of magnetic heating materials and safe operation of power grids, in particular to a ferrite-based anti-icing composite coil for transmission line conductors and a preparation method thereof. Background technique [0002] Due to the hazards of winter ice and snow on power transmission lines, it is easy to cause serious disconnection, tower collapse, large-scale power outages, power cuts and other accidents. It not only poses a serious threat to the safe operation of my country's power system, but also has always been a difficult problem to be solved urgently in the research of power system. At present, dozens of anti-icing and anti-icing methods have been researched and applied at home and abroad. Among them, the anti-icing technology of magnetic materials with low Curie point temperature is used, because it has the characteristics of automatic anti-icing with temperature changes, which has attracted great attention. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L21/00C08L101/00C08K13/02C08K3/22H01B7/28
Inventor 张曰涛池永斌王晓琳
Owner STATE GRID CORP OF CHINA
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