Method for monitoring full-court stress of power transmission tower

A technology for stress monitoring and transmission towers, applied in force measurement, measurement devices, electrical digital data processing, etc., can solve the problems of not being able to obtain the structural stress of the transmission tower, and the inability to obtain the full-field stress of the transmission tower

Active Publication Date: 2011-02-23
SOUTHEAST UNIV
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  • Claims
  • Application Information

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Problems solved by technology

The disadvantages of these two methods are: for the first method, the stress of the transmission tower structure under the real working state cannot be obtained; for the second method, limited by the number of sensors, only the stress on a limited number of measuring points can be obtained, and the power transmission tower cannot be obtained. Full-field stress of the tower

Method used

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  • Method for monitoring full-court stress of power transmission tower
  • Method for monitoring full-court stress of power transmission tower
  • Method for monitoring full-court stress of power transmission tower

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Experimental program
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Embodiment

[0018] Embodiment: a method for monitoring the overall stress of a transmission tower, comprising the following steps:

[0019] (1) Establish a high-fidelity finite element model of the transmission tower, the specific method is as follows:

[0020] First, establish the initial finite element model of the transmission tower;

[0021] Secondly, the initial finite element model is corrected according to the measurement data of the transmission tower;

[0022] Finally, a high-fidelity finite element model of the transmission tower is obtained;

[0023] (2) GPS is installed on the transmission tower;

[0024] (3) Obtain the GPS data in the working state, and use the attitude solving technology to obtain high-precision transmission tower attitude data. The method is as follows:

[0025] A and B are two GPS antennas, It is called the baseline, and its length is L. Let the coordinates of A and B in the local geographic coordinate system be:

[0026] S ...

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Abstract

The invention provides a method for monitoring the full-court stress of a power transmission tower, which is characterized by comprising the following steps of: (1) building a high-fidelity finite element model of a power transmission tower; (2) mounting a global positioning system (GPS) on the power transmission tower; (3) acquiring GPS data in a working state and acquiring high-precision power transmission tower attitude data by adopting attitude solving technology; and (4) inputting the attitude data into the high-fidelity finite element model of the tower transmission tower to obtain the full-court stress in the working state. The method overcomes the shortcoming that the conventional monitoring technology can only acquire the stress of limited numbers of measuring points of the power transmission tower in the working state and acquires the full-court stress of the power transmission tower in the working state by combining the GPS data and structure limited element data.

Description

technical field [0001] The invention relates to a method applied to full-field stress monitoring of engineering structures, in particular to a method applied to full-field stress monitoring of transmission towers. Background technique [0002] Transmission towers are the core components of high-voltage and ultra-high-voltage transmission lines. Transmission towers usually have the common characteristics of towering structures and long-span structures such as high tower body, large span, and large flexibility. The response to environmental loads is sensitive, and collapse and damage under extreme conditions will cause serious consequences. At the beginning of 2008, extreme weather conditions such as blizzards and freezing rain across the country caused the collapse of many transmission line transmission towers in Hunan, Guizhou and other places, resulting in large-scale power outages, which seriously affected the normal operation of the regional national economy and the norma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G01L1/00
Inventor 费庆国韩晓林
Owner SOUTHEAST UNIV
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