Line wind load computing method for transmission tower in micro-morphogenetic region

A technology of transmission tower and calculation method, which is applied in the directions of calculation, electrical digital data processing, special data processing application, etc., and can solve problems such as large errors

Active Publication Date: 2012-05-02
CHINA ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Continuing to use the previous method to calculate will produce a large error

Method used

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  • Line wind load computing method for transmission tower in micro-morphogenetic region
  • Line wind load computing method for transmission tower in micro-morphogenetic region
  • Line wind load computing method for transmission tower in micro-morphogenetic region

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Embodiment Construction

[0075] Below in conjunction with example the present invention is described in detail.

[0076] The invention provides a calculation method for the line wind load of the pole tower structure of the transmission line which is suitable for micro terrain areas.

[0077] (1) Calculation model of line wind load in micro terrain area

[0078] The geometric equation of the ground wire should be used for accurate calculation, and the distance to the ground and the corresponding horizontal wind load of each point should be calculated according to the terrain along the line, and then integrated along the line to obtain the wind load of the line.

[0079] When the wind speed changes along the line,

[0080] G h = 1 2 ∫ L P h dl

[0081] = 1 2 ( ...

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Abstract

The invention provides a line wind load computing method for a transmission tower in a micro-morphogenetic region. The computing method can provide a theoretical foundation and a reference method for accurate computing a line wind load when a transmission line lies in the micro-morphogenetic region, a ground upheaval position or a ground sinking position. The computing method comprises a sectional type computing model for the line wind load in the micro-morphogenetic region, an average height computing method for a wire over the ground in a transmission line micro-morphogenetic region and a process for the computing method. The method has the advantages of accurate computing and convenience, and provides a reliable theoretical foundation for the transmission line built in the micro-morphogenetic region.

Description

technical field [0001] The invention belongs to the calculation field of wind loads of overhead transmission lines, and in particular relates to a calculation method for wind loads of transmission poles and towers in micro-terrain areas. Background technique [0002] The wind load acting on the tower structure of overhead transmission lines is mainly composed of line wind load and tower body wind load (in addition, there are other wind loads such as insulator string wind pressure). The wind load on the transmission line will be affected by micro-topography and micro-climate. Many national transmission line design codes stipulate the design method under the relevant terrain. [0003] Micro-topography is divided into high mountain watershed (or hill, mountain peak), terrain uplift (or cliff, hillside) and pass (or canyon wind channel, undulating terrain). The horizontal wind speed will change in the micro-topographic area, and the transmission line will inevitably pass throug...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 高雁杨靖波
Owner CHINA ELECTRIC POWER RES INST
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