Unlock instant, AI-driven research and patent intelligence for your innovation.

Wire vibration-proof system

A wire and anti-vibration technology, which is applied in the field of anti-vibration systems for ±800kV UHV DC large-span wires, can solve problems such as damage to insulator strings and tower components, damage to wires, etc.

Inactive Publication Date: 2015-08-19
CHINA POWER ENG CONSULTING GRP +6
View PDF8 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Galloping is a low-frequency and large-scale vibration phenomenon. Ice and wind are the necessary conditions for its generation. Its vibration frequency is usually 0.1-3Hz, and its amplitude is about 5-300 times the diameter of the wire. It causes flashover of phase-to-phase or relative grounding parts. The dynamic load generated by galloping will damage the insulator strings and tower components, and seriously damage the wires

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Wire vibration-proof system
  • Wire vibration-proof system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] figure 1 It is a schematic diagram of the anti-vibration solution for wires spanning over shelves to which the anti-vibration system of the present invention is applied. This scheme is an anti-vibration scheme optimized through the simulated vibration test of the phase wire system. Such as figure 1 As shown, the anti-vibration system 1 of the wire of the present invention is used for anti-vibration of the wire 10, and the AACSR / EST-720 / 320 extra-strength steel core high-strength aluminum alloy wire is used here, but in practical applications, it can also be used For other wires, the anti-vibration system 1 includes: damping wires 20 , anti-vibration hammers 30 , and guard wires 40 . In the anti-vibration system 1, anti-vibration hammer and damping wire are used to combine anti-vibration, the damping wire is the main part, and the anti-vibration hammer is supplemented, and the short lace is stripped. Full frequency coverage protection for breeze vibrations.

[0032] ...

Embodiment 2

[0036] figure 2 It is a schematic diagram of the anti-vibration scheme of the wire strain relief applying the anti-vibration system of the present invention. exist figure 2 in, right with figure 1 The same reference numerals are used for the same parts. figure 2Another lace arrangement method of the damping wire 20 is shown, wherein, L18=1.1m, L19=1.3m, L20=1.5m, L21=1.8m, L22=2.1m, L23=2.4m, L24=2.7 m, L25=3.3m. The above-mentioned laces at L18-L20 are peeled off one layer, and the above-mentioned laces at L21-L25 are not peeled off. The above arrangement distance is only an example, and appropriate adjustments can be made in specific projects, as long as the conditions of lace changing from short to long and short lace are peeled off are met. exist figure 2 In the anti-vibration solution shown, a total of 10 guard strips 40 are arranged.

[0037] After testing, the invention adopts anti-vibration hammer plus damping wire, strips the damping wire and reasonably mat...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a wire vibration-proof system. An overhead transmission wire comprises vibration-proof hammers, a damping wire and wire protection strips, wherein the vibration-proof hammers carryout auxiliary vibration prevention on the wire; in the damping wire, short laces subjected to layer-stripping processing and long laces without being subjected to the layer-stripping processing are used in a matched manner to carry out main vibration prevention, and the vibration-proof hammers are installed in the long laces at the inner side of the damping wire; and the wire protection strips are winded on clamping points, and the damping wire is arranged from a span middle side to span end sides and from short laces to long laces. The vibration-proof system is used for vibration prevention of a specially-strong steel core high-strength aluminum alloy wire used for an extra-high-voltage direct-current large-span condition, the problem that dynamic flexure strain exceeds an allowable standard value under a large span, large wire section and large stress condition is solved, the fatigue and strand breakage damage to the wire caused by aeolian vibration is prevented, and the safe and stable operation of a circuit is ensured.

Description

technical field [0001] The invention relates to an anti-vibration system for a wire, in particular to an anti-vibration system for a wire used for a ±800kV UHV DC large span. Background technique [0002] With the rapid development of social economy, the demand for electricity is also increasing rapidly. However, the distribution of primary energy is uneven and the distance is long, and the land for transmission channels is becoming more and more scarce. In order to solve the above problems, it will be a new solution to increase the transmission capacity and build a transmission line with a higher voltage level as the backbone network for long-distance transmission. [0003] At present, AACSR / EST-720 / 320 ultra-high-strength steel-cored high-strength aluminum alloy conductors are used on ultra-high voltage (such as ±800kV, 1000kV) large-span lines in the backbone network of domestic transmission lines. Conductor vibration is an important factor that threatens the safe opera...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H02G7/14
CPCH02G7/14
Inventor 薛春林孙涛周康王勇夏波温作铭吴建生王子瑾袁志磊钱广忠方波吴波陈功夏亮阴玮王景鹤黄金龙胡耀云魏其巍黄欲成马凌阎海李伟查玮黄家圣李澄宇罗德塔施芳吴启维马志坚
Owner CHINA POWER ENG CONSULTING GRP