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Squirrel-cage rigid jumper

A rigid jumper and squirrel-cage technology, applied in the field of rigid jumpers, can solve the problems of difficult wire layout and inability to meet the vibration requirements of the sub-gap, and achieve the effects of simple structure, convenient installation and disassembly, and convenient use

Active Publication Date: 2013-04-24
CHINA ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] A large number of researches and analyzes by the present inventors found that the S / d=15-18.7 adopted by 500kV AC and DC lines. For UHV lines, due to the large number of splits and the harsher electrical requirements, the layout of the wires is far more than that of the 500kV lines. Difficult to meet the sub-gap oscillation requirements

Method used

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  • Squirrel-cage rigid jumper
  • Squirrel-cage rigid jumper
  • Squirrel-cage rigid jumper

Examples

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Embodiment Construction

[0024] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0025] Such as figure 1 In the shown embodiment, a squirrel-cage rigid jumper includes a jumper 6 suspended between the line conductors 1 arranged on both sides of the strain tower, and the jumper 6 is provided with multi-split spacers 3 , the multi-split spacer 3 adopts a six-split spacer, and the middle part of the six-split spacer set in the middle section of the jumper 6 is provided with a through hole 4, and the steel pipe 2 passes through the through hole 4 to form a rigid part of the jumper 6, and the steel pipe 2 is provided with There is a suspension 5, which fixes the steel pipe 2. The suspension 5 can be connected in series with a diagonal tie rod or a jumper. The suspension 5 is provided with insulators. The steel pipe 2 can be divided into multiple sections, each The steel pipes 2 are connected by flanges t...

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Abstract

Provided is a squirrel-cage rigid jumper. The jumper is hung between circuit conductors. A spacing rod with multiple splits is arranged on the jumper. A through hole is formed in the middle portion of the spacing rod with the multiple splits arranged on the middle section of the jumper. A steel pipe penetrates through the through hole and forms a rigid part of the jumper. A pendant-fitting is arranged on the steel pipe. The steel pipe is in a multi-section structure. The sections of the steel pipe are connected through flanges. The split spacing distance of the rigid part is less than the split spacing distance of the circuit conductors. Subspan vibration effect needs not to be considered; the only consideration is meeting electrical characteristic values. The squirrel-cage rigid jumper is beneficial for the design and installation of the jumper.

Description

technical field [0001] The invention relates to a rigid jumper, in particular to a squirrel-cage rigid jumper. Background technique [0002] The jumper is to connect the wires suspended on both sides of the strain tower with wires that do not bear tension to form a current channel. When the voltage level is low, the line conductors of adjacent tension sections are generally connected by soft conductors, which can meet the requirements of electrical clearance and wind deflection. However, as the voltage level increases, the length of the insulator string increases, the length of the jumper increases accordingly, and the sag of the soft jumper used also increases. The electrical gap is reduced to reduce the sag of the jumper, and the ultra-high and ultra-high voltage lines adopt a rigid jumper structure to reduce the size of the tower head and reduce the line investment. [0003] The rigid jumper is a relatively complex part of the line structure. Not only is the corona char...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G7/00H02G7/12
Inventor 樊宝珍周立宪王景朝
Owner CHINA ELECTRIC POWER RES INST
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