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Tower weak component location method based on finite element dynamic analysis

A positioning method and finite element technology, applied in the direction of instruments, calculations, electrical digital data processing, etc., can solve the problems of weak transmission line monitoring, failure warning of tower components, etc., and achieve the effect of low cost

Active Publication Date: 2013-02-13
WUHAN UNIV
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Problems solved by technology

[0005] In order to solve the problem in the prior art that the failure of the tower components in the transmission line cannot be directly warned, the present invention proposes a method for locating the weak components of the tower based on finite element mechanical analysis. Solve the problem of monitoring the weak links of transmission lines from the source

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  • Tower weak component location method based on finite element dynamic analysis
  • Tower weak component location method based on finite element dynamic analysis
  • Tower weak component location method based on finite element dynamic analysis

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Embodiment Construction

[0032] The method of the invention can be summarized into three stages: pre-processing, finite element mechanical analysis and post-processing. The pre-processing is to build a three-dimensional simulation model of the tower; the finite element mechanical analysis includes simulating the actual working conditions, applying mechanical loads to the suspension of the wire insulator and the suspension of the ground wire in the tower model, and performing finite element mechanical analysis on the tower components; post-processing includes The axial stress ratio of the member is obtained according to the finite element mechanical analysis structure of the member, and the weak member is located according to the axial stress ratio of the member.

[0033] The method of the present invention will be further described below by taking the positioning of weak members of a 500kV double-circuit tower on the same tower as an example.

[0034] figure 2 Shown is a schematic diagram of the thr...

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Abstract

The invention discloses a tower weak component location method based on finite element dynamic analysis and belongs to the field of online monitoring of disaster prevention and reduction of a power transmission line. The method includes building a three-dimensional simulation model according to a tower structure, utilizing an orthogonal test method to select a load set, simulating all possible dynamic loads in operation of the tower, conducting finite element dynamic calculation, obtaining axial stress ratio of tower components according to simulation results under each load combination and selecting weak components according to the axial stress ratio. The tower weak components can be accurately located by means of the method. The method can be used for online monitoring of disaster prevention and reduction of the power transmission line and is capable of directly conducting effective early warning on effect failure of the tower components.

Description

technical field [0001] The invention belongs to the on-line monitoring technology for disaster prevention and mitigation of power transmission lines, in particular to a positioning method for weak components of towers. Background technique [0002] Transmission lines are an indispensable and important part of the power system and undertake the heavy responsibility of power transmission. However, the occurrence of icing on towers, conductors, and ground wires in winter, as well as the resulting tower collapse accidents, pose a threat to the safe and stable operation of transmission lines. At present, the commonly used online monitoring technologies for anti-icing disasters of transmission lines at home and abroad mainly include video monitoring systems for transmission lines, online monitoring systems for icing, online monitoring systems for tower inclinations, and online monitoring systems for tower unbalanced tension. [0003] The transmission line video monitoring system ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 阮江军刘超杜志叶周蠡胡元潮王卓柳杨
Owner WUHAN UNIV
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