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Method for measuring icing mass of transmission line

A technology for transmission wires and measurement methods, which is applied in the direction of measuring devices, weighing, and weighing equipment for materials with special properties/forms, etc., and can solve the problems that the elastic strain of transmission wires is difficult to measure directly, without consideration, etc.

Inactive Publication Date: 2012-05-23
SICHUAN HUIYUAN OPTICAL COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] This method of measuring the quality of ice coating does not consider the total elastic strain of the transmission wire in the actual measurement process, which is difficult to directly measure

Method used

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  • Method for measuring icing mass of transmission line
  • Method for measuring icing mass of transmission line
  • Method for measuring icing mass of transmission line

Examples

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Effect test

Embodiment 1

[0064] figure 2 It is a flow chart of a specific embodiment of the method for measuring the iced quality of the transmission wire of the present invention

[0065] In this example, if figure 2 As shown, in this embodiment, the transmission line design technical specification described in step (3) is edited by the East China Electric Power Design Institute of the State Power Corporation, "Technical Specification for Design of 110-500kV Overhead Transmission Lines" (DL / T 5092- 1999), China Academy of Building Research, "Code for Loading of Building Structures" (GBJ9-1987), 1987. Of course, in the specific implementation process, other load calculation manuals can also be selected,

[0066] In this example, the initial transmission line temperature t 0 , is the temperature when the wire is made.

[0067] In this embodiment, the set difference ε described in step c3 1 is 0.001m.

[0068] In this embodiment, the set difference ε described in step e 2 is 0.0000001, k 1 =0....

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Abstract

The invention discloses a method for measuring the icing mass of a transmission line. The method comprises the following steps of: measuring a line strain increment and the line temperature t of the transmission line, and measuring a wind speed v and a wind direction theta in the power transmission line environment by using a wind speed and direction sensor; calculating an icing thickness b of the transmission line through twice iteration; and calculating the icing mass of the whole transmission line according to the obtained icing thickness b of the transmission line and the influence of a division number of the transmission line. The method is more suitable for the actual condition of the field, namely the data measured by a strain sensor is actually the strain variation of the line other than the whole strain. Meanwhile, the data measured by the method is the strain variation of the line, so that the safety state of the transmission line can be reflected more intuitively.

Description

technical field [0001] The invention belongs to the technical field of ice coating monitoring of power transmission wires, and more specifically relates to a measurement method based on the ice coating quality of power transmission wires. Background technique [0002] In transmission lines, the icing of conductors is extremely harmful to the safe operation of transmission lines, and the accidents caused include: uneven icing or different deicing accidents; overload accidents; insulator ice flash accidents; When evenly covered with ice, the line is prone to galloping and galloping accidents; due to the large amplitude and long duration of galloping, it is easy to cause phase-to-phase flashover, damage ground wires, wires, fittings and other components, resulting in tripping and power failure of the line, disconnection of towers, etc. serious accident. A serious icing accident of transmission line conductors will lead to huge economic losses and seriously affect social life. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01G17/00
Inventor 张昌华曹永兴黄琦刘群英薛志航
Owner SICHUAN HUIYUAN OPTICAL COMM CO LTD
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