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Transmission tower material strength estimation and calculation method for simplifying index set

A technology of transmission towers and calculation methods, which is applied in the directions of calculation, electrical digital data processing, instruments, etc., and can solve the problems of complex calculation, distortion, multi-peak value, etc.

Inactive Publication Date: 2015-10-28
STATE GRID CORP OF CHINA +2
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Problems solved by technology

[0005] There are also some shortcomings in fuzzy comprehensive evaluation applied to the strength evaluation of tower materials: First, there are many factors that affect the strength of tower materials, while the traditional fuzzy comprehensive evaluation needs to calculate all evaluation indicators, so the calculation is more complicated, and may be due to various factors Severe distortion or multi-peak phenomenon caused by small weights; secondly, for the determination of index weights, due to the different evaluation criteria of various experts, the final results will also be different, so it is highly subjective

Method used

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  • Transmission tower material strength estimation and calculation method for simplifying index set
  • Transmission tower material strength estimation and calculation method for simplifying index set
  • Transmission tower material strength estimation and calculation method for simplifying index set

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Embodiment

[0153] For the tension-resistant iron tower of a certain electric power company, the detailed meteorological data of the past five years and the detailed operation data of the iron tower put into operation were retrieved. After re-inversion and simulation by this system, the system safety evaluation is in a dangerous state of failure. In addition, for some other serious defect situations, taking the actual tower material breakage as an example, the system part ( Figure 2-3 shown.

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Abstract

The invention discloses a method for estimating and calculating the strength of a power transmission pole tower material on the basis of a rough-fuzzy set. The method comprises the following steps of performing reduction on an index set by using a rough set theory; determining evaluation index weight by a method that subjective weight and objective weight are combined; according to an established evaluation order set, comprehensively evaluating and calculating the actual strength of the tower material by using a fuzzy mathematical method. The typical uncertain problem that the factorial validity affecting the strength of the tower material is not clear in an evolutionary process can be solved. The method can provide an important scientific criterion to the safety evaluation of an iron tower structure.

Description

[0001] This application is a divisional application with application number: 201410423096.2, application date: 2014.8.26, and title "A method for evaluating and calculating the strength of power transmission tower materials based on rough fuzzy sets". technical field [0002] The invention relates to the field of structural strength evaluation and calculation of transmission poles and towers, and is particularly suitable for the structural safety evaluation of transmission poles and towers operating for a long time in complex natural environments. Background technique [0003] The essence of line structure safety is an evolution process of an uncertain state space, and the state evolution (transition) process is random, in which the characteristic information representing the actual mechanical strength of tower materials is inaccurate, and the validity of the influencing factors is also It is not clear, the definition and extension of the operating state are vague, and the ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 傅靖陈国华朱富云徐剑峰葛乐龚灯才朱张蓓鞠易孙玉玮
Owner STATE GRID CORP OF CHINA
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