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Overhead transmission line squall line wind load calculation method, system, medium and equipment

A technology for overhead transmission lines and overhead transmission lines, which is applied in the field of calculation of squall line wind loads on overhead transmission lines, can solve the problems that it is difficult to effectively resist the invasion of squall line wind extreme disaster weather, so as to improve the ability to resist squall line wind, improve The effect of structural strength

Active Publication Date: 2022-05-13
STATE GRID ECONOMIC TECH RES INST CO +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Transmission towers designed according to the current normative methods are difficult to effectively resist the invasion of squall line wind extreme disaster weather

Method used

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  • Overhead transmission line squall line wind load calculation method, system, medium and equipment
  • Overhead transmission line squall line wind load calculation method, system, medium and equipment
  • Overhead transmission line squall line wind load calculation method, system, medium and equipment

Examples

Experimental program
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Effect test

Embodiment 1

[0042] This embodiment discloses a method for calculating the wind load of squall lines on overhead transmission lines, such as figure 2 shown, including:

[0043] S1 According to the fortified squall line wind force level and corresponding wind speed of the proposed overhead transmission line, select the load physical model suitable for the squall line wind meteorological conditions, so that the standard wind load acts on the conductor 1, and the squall line wind load acts on the transmission tower 2.

[0044] In the embodiment of the present invention, according to the squall line wind meteorological data and the transmission line meteorological condition recurrence period requirements, the fortified squall line wind force level and corresponding wind speed of the proposed overhead transmission line are obtained. The specific fortified squall line wind force level and corresponding wind speed are shown in the table 1.

[0045] Table 1 Fortified squall line wind force level a...

Embodiment 2

[0059] Based on the same inventive concept, this embodiment discloses a squall line wind load calculation system for overhead transmission lines, including:

[0060] The load model module is used to determine the load physical model suitable for the meteorological conditions of the squall line wind according to the fortified squall line wind force level and corresponding wind speed of the proposed overhead transmission line, so that the standard wind load acts on the conductor, and the squall line wind load acts on the transmission line tower;

[0061] The wind load calculation module is used to input the wind force level of the fortified squall line and the corresponding wind speed into the load physical model to obtain the wind load of the overhead transmission line.

[0062] The calculation formula for the squall line wind load of transmission tower 2 is:

[0063] W sg =W g · μ z · μ s ·β z ·B 2 ·A s

[0064] Among them, W sg is the wind load of the overhead trans...

Embodiment 3

[0069] Based on the same inventive concept, this embodiment discloses a computer-readable storage medium storing one or more programs, one or more programs include instructions, and the instructions, when executed by a computing device, cause the computing device to execute any one of the above-mentioned Calculation method of squall line wind load for overhead transmission lines.

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Abstract

The invention belongs to the technical field of communication, and relates to an overhead transmission line squall line wind load calculation method, system, medium and equipment, and the overhead transmission line squall line wind load calculation method comprises the following steps: determining a load physical model suitable for squall line wind meteorological conditions according to a fortification squall line wind power level of a planned overhead transmission line and a corresponding wind speed, the standard wind load acts on the conductor, and the squall line wind load acts on the power transmission tower; and inputting the fortified squall line wind power grades and the corresponding wind speeds into the load physical model to obtain the overhead transmission line wind load. According to the invention, reasonable evaluation of the squall line wind load of the power transmission line is realized on the basis of the basic principle of structural wind engineering and measured data of squall line wind meteorology.

Description

technical field [0001] The invention relates to a squall line wind load calculation method, system, medium and equipment of an overhead transmission line, which belongs to the technical field of communication, and in particular to the technical field of wind load calculation of transmission lines. Background technique [0002] Squall line wind is a type of thunderstorm. If the water vapor in the rising air condenses to produce large-scale rainfall, the raindrops will exert viscous drag on the air passing through them and cause a strong downdraft. Some of that precipitation will evaporate in the lower atmosphere, cooling the atmosphere there and sinking. The sinking cold air flow spreads on the ground in the form of a wall jet, that is, the air flow formed by the jet hitting the wall, thus forming a squall line wind. [0003] Squall winds pose a great threat and damage to overhead transmission lines. When transmission lines encounter severe squall winds, tower collapse accid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06Q50/06
CPCG06F30/20G06Q50/06
Inventor 郭铭群李本良赵峥鲁俊温作铭刘泉李显鑫范玉娟张林枫刘培杰
Owner STATE GRID ECONOMIC TECH RES INST CO
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