Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Same-tower double-circuit power transmission line phase-to-phase limiting live working method

A technology of transmission lines and double circuits on the same tower, applied in the directions of overhead lines/cable equipment, multi-phase network asymmetry reduction, etc., can solve the problem that the combined gap cannot meet the requirements of live work, etc., to improve live work rate, carry and The effect of convenient disassembly and assembly, reducing power failure maintenance time

Active Publication Date: 2020-06-26
PINGDINGSHAN POWER SUPPLY ELECTRIC POWER OF HENAN
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above two methods cannot solve the problem of live work. Due to the influence of the weight of the human body and the weight of related work tools, the combined gap cannot meet the requirements of live work.

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
  • Same-tower double-circuit power transmission line phase-to-phase limiting live working method
  • Same-tower double-circuit power transmission line phase-to-phase limiting live working method
  • Same-tower double-circuit power transmission line phase-to-phase limiting live working method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] refer to Figure 1-2 , this embodiment provides a method for interphase limit live operation of double-circuit transmission lines on the same tower. When performing maintenance work on the upper phase conductors, it is necessary to install " "Triangle" limit stop arm support device 5; when performing maintenance work on the middle-phase conductor, it is necessary to install the "Ⅰ" word limit stop arm support device 4 between the middle and lower phase conductors to ensure that the personnel shift positions during equipotential work The combined clearance meets the requirements throughout the entire process of the job.

[0041] Equipotential operation by means of limit method of support from the central middle phase "Ⅰ": This operation method is mainly used between the middle and lower phases when the middle phase conductors of the multi-circuit transmission line of 110kV-220kV on the same tower cannot carry out the conventional equipotential work method. It is an oper...

Embodiment 2

[0046] Such as Figure 3-6 As shown, this embodiment provides the support device for the limit arm in Embodiment 1, and the support device for the limit arm includes a support ladder and clamping mechanisms 6 arranged at both ends of the support ladder.

[0047] The clamping mechanism 6 includes a base, a support module and a clamping module arranged on the base, and the support module includes a support rod 13 arranged on the base and a support plate arranged on the support rod 13 12.

[0048] The clamping module includes an electric jaw 11 arranged on the support plate 12, an inverted U-shaped guide rail 10 arranged on the top of the support plate 12 and a motor 15 arranged on the base; the electric jaw The bottom of 11 is provided with the air cylinder 14 that is connected with described motor 15.

[0049] The base includes a triangular bottom plate 17 and a connecting pipe 18 arranged below the bottom plate 17 .

[0050] The support ladder includes an insulating rod 7 c...

Embodiment 3

[0062] This embodiment provides a limit arm support device, which is an improvement on the basis of Embodiment 2: the bottom plate 17 has a triangular structure, and two trapezoidal through holes 16 are arranged on it. The pipe wall of the connecting pipe 18 is provided with a pair of circular through holes along the diameter direction, and the bolts 19 are arranged in the circular through holes. The end of the inverted U-shaped guide rail 10 that is not connected to the support plate 12 is inclined outward.

[0063] The triangular bottom plate is a stable structure, and the connecting pipes 18 are arranged on three corners. The trapezoidal through hole 16 saves material and reduces weight on the one hand, and facilitates handling on the other hand. The pipe wall is provided with a pair of circular through-holes along the diameter direction, and bolts are arranged in the circular through-holes. On the one hand, it is convenient to connect to other supporting structures, and o...

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 provides a same-tower double-circuit power transmission line phase-to-phase limiting live working method, and belongs to the technical field of same-tower multi-circuit power transmission lines. When an upper-phase wire is overhauled, limiting stop arm supporting devices need to be installed between the upper-phase wire and a middle-phase wire, between the upper-phase wire and a lower-phase wire and between the middle-phase wire and the lower-phase wire. When the middle-phase wire is overhauled, a limiting stop arm supporting device needs to be installed between the middle-phasewire and the lower-phase wire. The live working technology for any position in the span of a same-tower multi-circuit line is a development trend of future line live working. The requirements of benchmarking and power supply reliability are met, the problems in the prior art are solved, the live working efficiency is improved, the power failure probability of a power grid is reduced, the development of state maintenance work of a power transmission line is facilitated, the blank of live working at any position in the span of a 110kV-220kV same-tower multi-circuit line is filled, and an outstanding contribution is made to the healthy development of the power grid.

Description

technical field [0001] The invention relates to the technical field of multi-circuit power transmission lines on the same tower, in particular to a method for live-line work of phase-to-phase limitation of double-circuit power transmission lines on the same tower. Background technique [0002] In recent years, the proportion of multi-circuit transmission lines on the same tower has increased year by year. According to the requirements of anti-galling control of transmission lines, the east-west lines are basically installed with interphase spacers. In recent years, these interphase spacers have been gradually exposed during the operation process: the end of the spacer is falling off, the composite material of the umbrella skirt and the rod is aging, and the hydrophobicity is reduced. Follow-up needs to be replaced in batches on a regular basis. Due to the impact of peer benchmarking and power supply reliability, it is difficult to eliminate power outages and replace them in ...

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
IPC IPC(8): H02G1/02
CPCH02G1/02Y02E40/50
Inventor 周乐超赵元林岐召阳肖春伟宋海刚孙君录申思勉范松坡刘江川吕慧洲
Owner PINGDINGSHAN POWER SUPPLY ELECTRIC POWER OF HENAN
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com