Electro-ceramics electrical equipment earthquake failure probability evaluation method based on total probability theory

A technology of electrical equipment and failure probability, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as irregular earthquake operation, inability to evaluate equipment safety, and inability to ensure earthquake resistance requirements, etc., to achieve convenient and reasonable The effect of mechanical property information

Active Publication Date: 2015-03-04
STATE GRID CORP OF CHINA +2
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Problems solved by technology

However, this method cannot consider the extremely irregular waveform of the earthquake when the actual earthquake action, and the vibration changes rapidly, with obvious random characteristics
The use of deterministic structural strength and seismic action parameters leads to great uncertainty and blindness in the seismic calc

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  • Electro-ceramics electrical equipment earthquake failure probability evaluation method based on total probability theory
  • Electro-ceramics electrical equipment earthquake failure probability evaluation method based on total probability theory
  • Electro-ceramics electrical equipment earthquake failure probability evaluation method based on total probability theory

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Embodiment Construction

[0055] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0056] The present invention provides a method for evaluating the probability of earthquake failure of electric porcelain electrical equipment based on the total probability theory, such as figure 1 The specific steps shown include:

[0057] 1. Calculating the random parameter R of the strength of electric porcelain electrical equipment;

[0058] Electric porcelain materials are brittle materials, and their earthquake damage is fracture damage. The original intention of Weibull distribution function is to describe the fracture s...

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Abstract

The invention provides an electro-ceramics electrical equipment earthquake failure probability evaluation method based on a total probability theory. The method includes the steps of firstly, calculating the strength random parameter R of electro-ceramics electrical equipment; secondly, calculating an earthquake action random parameter S; thirdly, building the capacity-requirement model g(X) of the electro-ceramics electrical equipment; using a Monte Carlo method to analyze the failure probability of the electro-ceramics electrical equipment on the basis of the strength random parameter R and the earthquake action random parameter S; fourthly, drawing the vulnerability curve of the electro-ceramics electrical equipment. Compared with the prior art, the method has the advantages that the failure probability of the electro-ceramics electrical equipment under different-level seismic responses can be evaluated, and analyzing results are statistically significant and have an evaluation effect.

Description

technical field [0001] The invention relates to a method for evaluating the probability of earthquake failure of electrical equipment, in particular to a method for evaluating the probability of earthquake failure of electric porcelain electrical equipment based on the theory of total probability. Background technique [0002] Electric porcelain materials are widely used in electrical equipment due to their good insulation and stability. Pillar electrical equipment made of porcelain materials in substations (mainly lightning arresters, transformers, circuit breakers, post insulators, disconnectors, etc.) A quasi-resonance phenomenon occurs in the center, and the damping ratio of the ceramic material is small, which is more likely to cause a large earthquake response; in addition, the key structure of this type of equipment is the electric porcelain sleeve, which is a brittle material with low strength, poor deformation and energy storage capacity. Therefore, electric porcel...

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Application Information

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IPC IPC(8): G06F17/50
Inventor 刘振林卢智成孙宇晗钟珉
Owner STATE GRID CORP OF CHINA
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