Comprehensive analysis method of reliability of transmission line tower structure

A transmission line, comprehensive analysis technology, applied in the spatial arrangement/configuration of cables, towers, electrical digital data processing, etc., can solve the problem of 500kV line reliability level without clear indicators, etc.

Inactive Publication Date: 2009-11-11
CHINA ELECTRIC POWER RES INST
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Due to the replacement of design methods and design standards, there is no clear index for the reliability level of 500kV lines in my country

Method used

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  • Comprehensive analysis method of reliability of transmission line tower structure
  • Comprehensive analysis method of reliability of transmission line tower structure
  • Comprehensive analysis method of reliability of transmission line tower structure

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Embodiment Construction

[0061] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0062] The reliability level of 500kV transmission lines designed in different stages in the history of our country has been reasonably evaluated by studying the reliability of tower structural components of 500kV transmission lines in my country. Extensively investigate the tower collapse accidents of the existing 500kV transmission lines in my country, and use the method of probability theory to verify the difference between the actual reliability and the theoretical reliability level.

[0063] 1. The reliability index of the structural components of the 500kV transmission line tower calculated by the first-order second-order moment method:

[0064] Method of use (1): Use the first-order second-order moment method to calculate the reliability of transmission line tower structural components. The steps are as follows:

[0065] 1. The structural functi...

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Abstract

The invention provides a comprehensive analysis method of reliability of a transmission line tower structure. The comprehensive analysis method comprises the following steps of: using a first-order second-moment method to calculate the theoretical reliability of components of the transmission line tower structure, adopting a narrow limit method to calculate the theoretical reliability of the transmission line tower structural system and calculating the reliability index of the tower structural system of actual lines, thus being capable of carrying out comparison and analysis to the theoretical value and the actual value, being capable of being used for carrying out evaluation and analysis to the setting level of reliability of the transmission line tower structure, and the like.

Description

technical field [0001] The invention belongs to the field of transmission line structures, and in particular relates to a comprehensive analysis method for the structural reliability of 500kV transmission line towers. Background technique [0002] The design method of the tower structure of transmission lines in my country can be roughly divided into three periods. Before 1994, the design method of transmission lines in the former Soviet Union followed the allowable stress design method of the former Soviet Union (single safety factor method); beta C ; The DL / T 5092-1999 "Technical Regulations for Design of 110-500kV Overhead Power Transmission Lines" promulgated in 1999 was changed to the probability-based limit state design method, and the design expression of sub-item coefficients. Due to the replacement of design methods and design standards, there is no clear index for the reliability level of 500kV lines in my country. Contents of the invention [0003] The reliabil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G7/20E04H12/00G06F19/00G06F17/10
Inventor 李茂华
Owner CHINA ELECTRIC POWER RES INST
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