Overhead contact line reliability assessment method giving consideration to weather condition

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 ...

AI Technical Summary

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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