Overhead contact line reliability assessment method giving consideration to weather condition

A reliability and catenary technology, applied in the direction of instruments, data processing applications, resources, etc., can solve problems such as difficult to obtain component failure rate, repair rate, component failure rate and repair rate uncertainty, to reduce statistical workload, Guaranteed data integrity and short run times

Inactive Publication Date: 2016-12-07
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology

[0005] The purpose of the present invention is to propose an evaluation method that considers the impact of weather conditions on the reliability of catenary, and at the same time overcome the problem that it is difficult to obtain component failure rates and repair rates under different weather conditions on site, and solve the failure rate and repair of various components of the catenary system rate uncertainty

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  • Overhead contact line reliability assessment method giving consideration to weather condition
  • Overhead contact line reliability assessment method giving consideration to weather condition
  • Overhead contact line reliability assessment method giving consideration to weather condition

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Embodiment

[0058] A catenary reliability assessment method considering weather conditions, which takes into account the impact indicators of weather conditions on reliability assessment and overcomes the uncertainty caused by statistical errors or insufficient statistical data. To evaluate the reliability, including the following main steps:

[0059] A. Calculate the failure rate and repair rate of various components under different weather conditions

[0060] According to the IEEE standard guidelines, the weather is divided into three states: normal weather, severe weather, and disaster weather, and the failure rate and repair rate of various components under different weather states are calculated;

[0061] A1. Calculate the failure rate λ of a certain type of component under different weather conditions j :

[0062] λ j = λ a v g F ...

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Abstract

The invention discloses an overhead contact line reliability assessment method giving consideration to a weather condition, and the method gives the consideration to the impact on the reliability assessment from the weather condition, can solve a uncertain problem caused by a statistical error or insufficient data, and can be used for the reliability assessment of an overhead contact line system under different weather conditions. The method comprises the steps: 1), enabling the weather conditions to be divided into normal weather, severe weather and disastrous weather, and calculating the fault rates and repair rates of various types of elements under different weather conditions; 2), enabling the fault rates and repair rates of various types of elements under different weather conditions to serve as the random fuzzy variables, employing a triangular fuzzy number to represent the fuzzy distribution of the random fuzzy variables, and carrying out the random fuzzification processing of the fault rates and repair rates which are solved at step 1); 3), calculating the reliability index of a system giving consideration to the weather condition, deducing a calculation formula according to a GO method, and solving the mathematical expectation values of the random fuzzy variables through employing a credibility theory, wherein the reliability index serves as the reliability index of the overhead contact line system.

Description

technical field [0001] The invention relates to the field of reliability evaluation of traction power supply system, especially the evaluation of reliability of catenary system. Background technique [0002] With the development of social science and technology, the total mileage of high-speed railways has increased rapidly. At the same time, the safe and reliable operation of high-speed railways has also received more and more attention. Among them, the reliable operation of high-speed railway traction power supply systems is closely related to the safe and stable operation of high-speed railways. Relatedly, the high-speed railway traction power supply system requires extremely high operational reliability. The non-standby catenary system is a key component of the traction power supply system. Whether it can be safely and reliably in service is directly related to the safe and stable operation of the locomotive. Therefore, how to evaluate and improve the reliability of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/063G06Q50/06
Inventor 林圣王贞冯玎何正友高仕斌
Owner SOUTHWEST JIAOTONG UNIV
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