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

Equivalent icing thickness monitoring method based on accurate measurement of conductor sag change

A technology of icing thickness and wire sag, which is applied to measuring devices, instruments, alarms, etc., can solve the problems of failure to achieve stable icing and accurate online monitoring of transmission lines

Active Publication Date: 2021-08-31
GUIZHOU POWER GRID CO LTD
View PDF24 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for monitoring equivalent ice coating thickness based on accurate measurement of wire sag changes, so as to solve technical problems such as stable and accurate on-line monitoring of transmission line ice coating that cannot be realized in the prior art

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
  • Equivalent icing thickness monitoring method based on accurate measurement of conductor sag change
  • Equivalent icing thickness monitoring method based on accurate measurement of conductor sag change
  • Equivalent icing thickness monitoring method based on accurate measurement of conductor sag change

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] Below in conjunction with accompanying drawing, the present invention is described in further detail, as shown in the figure:

[0038] The present invention provides a method for monitoring the equivalent ice thickness based on wire sag changes, comprising the following steps:

[0039] Select a span section of the transmission line to be monitored in areas with severe icing, and obtain the original data such as tower height, line span and terrain characteristics, determine the ground base point corresponding to the lowest sag, and obtain the online monitoring of wire icing Location information and basic information.

[0040] Specifically, an equivalent ice thickness monitoring method based on the accurate measurement of conductor sag changes proposed by the present invention can be applied to a representative section of a transmission line in a severely ill area or a designated line segment that needs to be monitored, so as to reflect the power transmission in a local a...

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 an equivalent icing thickness monitoring method based on accurate measurement of conductor sag change, wherein the method comprises the steps: selecting a span section of a to-be-monitored power transmission line in an icing area, collecting rod tower nominal height, line span and topographic feature original data, and obtaining position information and basic information of wire icing on-line monitoring; mounting a laser tracking device on a tower body of a rod tower, and mounting a laser capturing and reflecting device at the lowest sag point of a wire to collect the lowest sag of the wire; establishing a line state equation containing sag change of the topographic position of the selected power transmission line under various weather conditions, and obtaining a sag change curve taking a ground base point and a rod tower body laser emission point as reference positions; establishing a mathematical model for monitoring the relationship between the line segment sag change and the ice thickness; and obtaining an equivalent icing thickness value according to the relationship between the sag change and the equivalent icing thickness. The technical problem that in the prior art, stable and accurate on-line monitoring of power transmission line icing cannot be achieved is solved.

Description

technical field [0001] The invention belongs to the technical field of ice coating thickness monitoring, in particular to an equivalent ice coating thickness monitoring method based on accurate measurement of wire sag changes. [0002] technical background [0003] The icing of transmission lines seriously endangers the safe operation of the power grid. However, there is no method to accurately monitor the thickness and state of icing on transmission line conductors at home and abroad. The current typical icing monitoring methods include mechanical measurement, icing prediction, and image analysis. Processing method, simulated wire method, etc. The mechanical measurement method calculates the equivalent ice thickness of the wire by measuring the stress and inclination angle of the suspension end according to the axial stress change after the wire is iced. This method has a simple structure and accurate measurement, but the stability of the tension sensor in a low temperature ...

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): G01B11/06G08B21/18G08B25/10
CPCG01B11/06G08B21/18G08B25/10
Inventor 黄欢马晓红蒋兴良牛唯张志劲吕黔苏曾华荣吴建蓉杨旗班国邦张露松杨柳青刘康
Owner GUIZHOU POWER GRID CO LTD
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