Extra-high voltage lead for intelligent power grid

A smart grid and ultra-high voltage technology, applied in the direction of cable/conductor manufacturing, conductors, circuits, etc., can solve the problems of not being able to meet the needs of large-load transmission, and achieve the effect of simple and feasible preparation process, light weight, and increased working temperature

Inactive Publication Date: 2016-08-17
JUNAN POWER SUPPLY CO OF STATE GRID SHANDONG ELECTRIC POWER CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As the voltage level of power transmission is getting higher and higher, the highest voltage level in my country has reached 1000kV. The original steel-cored aluminum stranded wire for power transmission can no longer meet the needs of large-load transmission. New transmission materials with long distance, large capacity and large span research is becoming more and more urgent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] An ultra-high voltage wire for a smart grid, which is formed by twisting a plurality of strands of carbon fiber conductors, and the carbon fiber conductors are prepared according to the following steps:

[0019] Step 1) Preparation of material A: put graphite into a crucible, place it in a muffle furnace for calcination, and under the protection of nitrogen, calcine at 700°C for 3 minutes, take it out, and pulverize it into powder to obtain material A;

[0020] Step 2) Preparation of material B: Mix and stir nano-silica and nano-alumina evenly, then add it to polyvinylpyrrolidone, stir at 300 rpm for 5 minutes, and then place it in a moist heat at a temperature of 60°C and a relative humidity of 80%. 6 hours in the environment, and finally cooled to room temperature to obtain material B; wherein, the mass ratio of nano-silica, nano-alumina and polyvinylpyrrolidone is 1:1:2;

[0021] Step 3) Preparation of material C: Add material A, material B and carbon fiber to a high...

Embodiment 2

[0026] An ultra-high voltage wire for a smart grid, which is formed by twisting a plurality of strands of carbon fiber conductors, and the carbon fiber conductors are prepared according to the following steps:

[0027] Step 1) Preparation of material A: put graphite into a crucible, place it in a muffle furnace for calcination, and under the protection of nitrogen, calcine at 800°C for 3 minutes, take it out, and pulverize it into powder to obtain material A;

[0028] Step 2) Preparation of material B: Mix and stir nano-silica and nano-alumina evenly, then add it to polyvinylpyrrolidone, stir at 300 rpm for 5 minutes, and then place it in a moist heat at a temperature of 60°C and a relative humidity of 80%. 6 hours in the environment, and finally cooled to room temperature to obtain material B; wherein, the mass ratio of nano-silica, nano-alumina and polyvinylpyrrolidone is 1:1:2;

[0029] Step 3) Preparation of material C: Add material A, material B and carbon fiber to a high...

Embodiment 3

[0034] 1. Conductivity test:

[0035] The carbon fiber conductor prepared in embodiment 1-2 is carried out conductivity test, detects according to the testing method of national standard GB / T12966-2008, and its result is as shown in table 1:

[0036] Table 1

[0037] group Conductivity (%IACS) Example 1 69.7 Example 2 68.8

[0038] 2. Mechanical test:

[0039] The carbon fiber conductor prepared in Example 1-2 is subjected to a tensile test at room temperature, and a standard tensile sample is made according to the national standard GB / T228-2002, and the tensile speed is 0.5mm / min, stretched on a 30KN tensile testing machine, and the length is measured Be 50mm, measure tensile strength, elongation, its result is as shown in table 2:

[0040] Table 2

[0041] group Tensile strength (MPa) Elongation (%) Example 1 213 16.4 Example 2 217 16.2

[0042] 3. Heat and corrosion resistance test:

[0043] The carbon fiber ...

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PUM

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Abstract

The invention belongs to the field of electric power materials, and discloses an extra-high voltage lead for an intelligent power grid. The extra-high voltage lead is formed by twisting multiple strands of carbon fiber conductors, wherein the carbon fiber conductors are prepared by the steps of: (1) preparing a material A; (2) preparing a material B; (3) preparing a material C; (4) preparing a material D; and (5) preparing the carbon fiber conductors. A multi-stand carbon fiber conductor composite structure is adopted by the extra-high voltage lead for the intelligent power grid, so that the extra-high voltage lead is high in strength, light in weight, long in transmission distance and high in capacity.

Description

technical field [0001] The invention belongs to the field of electric power materials, and in particular relates to an ultra-high voltage wire for a smart grid. Background technique [0002] The English abbreviation of UHV is UHV; the symbol of voltage is U (in some places, it is represented by V); the unit of voltage is volts, and the unit symbol is also V; the ones larger than volts are kV, and the ones smaller than volts are mV and uV. carry. In my country, UHV refers to the voltage level of ±800 kV and above direct current and 1000 kV and above alternating current. UHV can greatly enhance the transmission capacity of my country's power grid. According to the data provided by the State Grid Corporation of China, the UHV DC power grid of the primary circuit can transmit 6 million kilowatts of electricity, which is equivalent to 5 to 6 times that of the existing 500 kV DC power grid, and the power transmission distance is also 2 to 3 times that of the latter. Therefore, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B5/08H01B5/10H01B13/00H01B13/012H01B3/48
CPCH01B5/08H01B3/48H01B5/105H01B13/00H01B13/012
Inventor 孙运东王海鹏
Owner JUNAN POWER SUPPLY CO OF STATE GRID SHANDONG ELECTRIC POWER CO
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