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Continuous strain section assembly type wiring method for ultrahigh-strength aluminum conductor steel supported wires

An ultra-high-strength, tension-resistant technology, applied in overhead lines/cable equipment, etc., can solve the problems of increased wire manufacturing cost and construction cost, and achieve the effect of controlling loss and waste, ensuring crimping quality, and reducing high-altitude operations.

Inactive Publication Date: 2012-10-10
STATE GRID ZHEJIANG ELECTRIC POWER CO LTD SHAOXING POWER SUPPLY CO +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

3. The manufacturing cost of wires has increased by about 15%, but the construction cost of the line body has only increased by 2%-5%

Method used

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  • Continuous strain section assembly type wiring method for ultrahigh-strength aluminum conductor steel supported wires
  • Continuous strain section assembly type wiring method for ultrahigh-strength aluminum conductor steel supported wires
  • Continuous strain section assembly type wiring method for ultrahigh-strength aluminum conductor steel supported wires

Examples

Experimental program
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Effect test

Embodiment 1

[0013] This embodiment is the wiring of the wires in the left back (facing the large) of tower No. 44 to tower No. 49 of the Lekhui-Zhanzhan 220kV double-circuit transmission line project, of which No. 44, No. 48 and No. 49 are corner towers, and the rest are straight lines Tower, each phase conductor 1 is used 2* JLRZ / EST-400 / 50-250 ultra-high-strength soft aluminum stranded wire with steel core, the method of stringing adopts the method of assembly-type stringing method for continuous tensile section of ultra-high-strength soft aluminum stranded wire with steel core according to the present invention, tower 7 of No. 44 The traction machine 9 is arranged on the side, and the tension machine 8 is arranged on the side of No. 49 tower 2. The specific operation method is as follows:

[0014] The calculation of the length of the conductor’s tensile section should be based on the normal temperature condition, that is, 15°C, no wind, no ice, and the normal tension condition. The d...

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Abstract

The invention discloses a continuous strain section assembly type wiring method for ultrahigh-strength aluminum conductor steel supported wires. The method includes the steps: 1) calculation of the length of a strain section of a wire; 2) calculation of the manufacturing wire length; 3) utilization of strain hardware; and 4) an assembly type wiring process. By the method, wire loss and waste are effectively controlled, compression quality is guaranteed, and aloft operation is reduced. Further, the method is an accurate, efficient and safe construction method.

Description

technical field [0001] The invention relates to an assembly type stringing method for a continuous tension section of an ultra-high-strength steel-core annealed aluminum stranded wire, which belongs to the technical field of electric energy transmission lines. Background technique [0002] With the construction and development of the national intelligent and strong power network, the State Grid Corporation of China will intensify the construction of the power grid during the "Twelfth Five-Year Plan" period, focusing on the application of energy-saving and consumption-reducing conductors. Extra-high-strength steel-core soft aluminum stranded wire is one of the energy-saving conductors that is preferred for promotion. First, it is a new product of capacity-enhancing wire for transmission lines. Compared with ordinary wires, it has the following advantages: 1. The maximum operating temperature of the wire is increased from 80 degrees to 150 degrees, and the transmission capacity...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G1/02
Inventor 丁自强戚柏林姚耀明谢明法汪国林张彤成剑英周城林
Owner STATE GRID ZHEJIANG ELECTRIC POWER CO LTD SHAOXING POWER SUPPLY CO
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