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Line fault detection method based on carbon fiber conductor

A carbon fiber wire and line failure technology, applied in the field of power transmission and distribution, can solve the problems of complex detection equipment, low detection efficiency, and low accuracy, and achieve the effects of increasing unit transmission capacity, good long-term economic efficiency, and ensuring robustness

Inactive Publication Date: 2016-04-13
STATE GRID HENAN ELECTRIC POWER COMPANY ZHENGZHOU POWER SUPPLY +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of detection equipment requires multiple electrical and mechanical devices to realize, and cannot be used for online monitoring of high-voltage cables
The patent with the publication number CN103323463 discloses an automatic detection method for the characterization of carbon fiber reinforced composite conductor cores, which generates a template image with periodic transformation and projects the template image on the surface of the fiber material, and obtains accurate fiber material characterization by analyzing the reflection template image Information, this method solves the problem that the surface detection of carbon fiber reinforced composite cable core can only rely on manual work, resulting in low detection efficiency and low accuracy, and realizes automatic detection
However, the detection equipment required by this method is more complicated, and the online monitoring of the line cannot be realized.

Method used

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  • Line fault detection method based on carbon fiber conductor

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The alloy wire is composed of the following weight percentages: Zr: 0.02%; Cu: 0.1%; Fe: 0.96%; Mn: 0.04%; vitrified bond: 0.1%; Mg: 0.05%; Ti: 0.02%; %; B: 0.2%, the balance is Al and unavoidable impurities. RE is Ce and La, where the mass ratio of Ce to La is 1:4.

[0042] The vitrified bond is composed of the following raw materials in weight percentage: 1% boron, 25% aluminum oxide, 5% lithium oxide, 3% sodium oxide and 4% magnesium oxide, 1% copper powder, 0.5% tin powder and 1% zinc oxide, the remainder The amount is silica; the particle size of said raw materials is not more than 10 microns.

Embodiment 2

[0044] The alloy wire is composed of the following weight percentages: Zr: 0.01%; Cu: 0.15%; Fe: 0.98%; Mn: 0.04%; Si: 0.1%; Mg: 0.06%; Ti: 0.05%; RE: 0.06%; B: 0.1%, the balance is Al and unavoidable impurities. RE is Ce, La, Nd and Ho, wherein the mass ratio of Ce, La, Nd and Ho is 1:1:2:1.

[0045] The vitrified bond is composed of the following raw materials in weight percentage: 2% boron, 20% aluminum oxide, 6% lithium oxide, 5% sodium oxide and 8% magnesium oxide, 2% copper powder, 1.5% tin powder and 0.3% zinc oxide, the rest The amount is silica; the particle size of said raw materials is not more than 10 microns.

Embodiment 3

[0047] The alloy wire is composed of the following components in weight percentage: Zr: 0.01%; Cu: 0.12%; Fe: 0.96%; Mn: 0.045%; Si: 0.1%; Mg: 0.09%; Ti: 0.01%; RE: 0.07%; B: 0.1%, the balance is Al and unavoidable impurities. RE is Ce, Nd and Ho, wherein the mass ratio of Ce, Nd and Ho is 1:2:2.

[0048] The vitrified bond is composed of the following raw materials in weight percentage: 1.5% boron, 22% aluminum oxide, 5% lithium oxide, 4% sodium oxide and 6% magnesium oxide, 1% copper powder, 1.0% tin powder and 0.5% zinc oxide, and the rest The amount is silica; the particle size of said raw materials is not more than 10 microns.

[0049] The electrical conductivity of the alloy wire is 65%, and the tensile strength exceeds 300MPa.

[0050] Carbon fiber composite wire is a new energy-saving capacity-enhancing wire with a new structure. Compared with conventional wires, it has light weight, high tensile strength, good heat resistance, small thermal expansion coefficient, sm...

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Abstract

The invention provides a line fault detection method based on a carbon fiber conductor. The method comprises the following steps: obtaining parameters of a carbon fiber conductor line high-voltage switch, and recording closing and opening coil current of the high-voltage switch; by analyzing waveform of the closing and opening coil current and stroke curve in the switching actions, judging whether switch electrical and mechanical characteristics of the high-voltage switch are normal; obtaining a real-time temperature value of a transformer through a transformer intelligent measurement and control instrument, and comparing the obtained temperature value with a preset value of the temperature corresponding to the model of the transformer; and obtaining a conductor sag, calculating the conductor temperature according to the conductor sag, and judging the operation condition of the current line with the obtained environment parameters being taken into consideration. The method realizes on-line automatic detection and control of the operation condition of the power transmission line.

Description

technical field [0001] The invention relates to the field of power transmission and distribution, in particular to a line fault detection method based on carbon fiber wires. Background technique [0002] my country's social user demand is growing rapidly, and power shortage may become a bottleneck restricting development. To solve this problem, in addition to speeding up the planning and construction of the power grid, an important way is to increase efficiency through technological transformation and upgrading, monitor the temperature of the conductors in real time according to the actual conditions of the operating environment, calculate the current carrying capacity of the lines, and fine-tune the current carrying capacity of the limited lines. Management can effectively improve the actual transmission capacity of overhead lines. The real-time and accurate measurement of conductor temperature is the basis for realizing the capacity increase of transmission lines. Existi...

Claims

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Application Information

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IPC IPC(8): G01R31/00G01R31/327G01M13/00
CPCG01M13/00G01R31/00G01R31/3275
Inventor 李宏伟林慧辛军郑阳郭菊梅郭保林
Owner STATE GRID HENAN ELECTRIC POWER COMPANY ZHENGZHOU POWER SUPPLY
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