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Evaluation method of operating condition of carbon fiber wire line

A carbon fiber wire and line operation technology, which is 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: 2018-07-06
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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  • Evaluation method of operating condition of carbon fiber wire line

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The alloy wire is composed of the following weight percentages: Zr: 0.02%; Cu: 0.1%; Fe: 0.96%; Mn: 0.04%; Si: 0.1%; Mg: 0.05%; Ti: 0.02%; RE: 0.05%; B: 0.02%, the balance being Al and unavoidable impurities. RE is Ce and La, where the mass ratio of Ce to La is 1:4.

Embodiment 2

[0039] 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: 0.01%, the balance being 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.

Embodiment 3

[0041] The alloy wire is composed of the following components in weight percentage: Zr: 0.01%; Zn: 0.02%; Cu: 0.12%; Fe: 0.96%; Mn: 0.045%; Si: 0.1%; Mg: 0.09%; Ti: 0.01%; RE: 0.07%; B: 0.01%, 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. The electrical conductivity of the alloy wire is 65%, and the tensile strength exceeds 300MPa.

[0042] 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, small high-temperature sag, high conductivity, and low line loss. A series of advantages such as low current carrying capacity, good corrosion resistance, and not easy to be iced, comprehensively solve various technical bottlenecks in the field of overhead power transmission, represent the technical development trend of overhead conductors ...

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Abstract

The invention provides a method for detecting the operating conditions of a carbon fiber wire line, which obtains the parameters of the high-voltage switch of the carbon fiber wire line, and records the closing and opening coil currents of the high-voltage switch; by analyzing the current waveforms of the closing and opening coils and the switching action Travel curve, to judge whether the switch electrical and mechanical characteristics of the high-voltage switch are normal; the real-time temperature value of the transformer is obtained by the transformer intelligent measurement and control instrument, and the obtained temperature value is compared with the preset temperature setting value corresponding to the transformer model ; Obtain the conductor sag, calculate the conductor temperature according to the conductor sag, and judge the current operating condition of the line in combination with the obtained environmental parameters. The invention realizes the online automatic detection and control of the operating condition of the transmission line.

Description

technical field [0001] The invention relates to the field of electric power transmission and distribution, in particular to a method for detecting the operating condition of a carbon fiber wire line. 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 t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/327G01R31/08G01K13/00
CPCG01K13/00G01R31/08G01R31/3275
Inventor 邝石张绍辉王颖郑琰李宏伟马建波程生安李婧李洪涛陈帆杨琳郭保林
Owner STATE GRID HENAN ELECTRIC POWER COMPANY ZHENGZHOU POWER SUPPLY