High-speed railway contact network equipment health assessment method

Abstract

The invention discloses a high-speed railway overhead line system equipment health evaluation method. The method comprises the steps of establishing an overhead line system health evaluation index item set; collecting operation data of the overhead line system, and constructing feature engineering; constructing a training set and a test set by taking the quality evaluation as a label and the secondary index item as a feature dimension, and obtaining a classification model through a classification-random forest algorithm; extracting the weight ratio of each index in the secondary index items inthe classification model; collecting record values of the secondary indexes of the contact network equipment as original data; performing 0-1 standardization on the original data; calculating the weight ratio of each index among the secondary index items; integrating the weight ratios to obtain a final weight ratio of each index in the secondary indexes; constructing a gray class level and a grayclustering function in gray clustering; calculating the coefficient of each gray level to which each contact network object belongs, and taking the level corresponding to the maximum coefficient as the health state of the contact network, thereby achieving the early warning of the health problem of the contact network equipment.

Description

technical field [0001] The invention relates to the field of railways, in particular to a health assessment method for high-speed railway catenary equipment. Background technique [0002] With the rapid development of China's economy, railway transportation has become an important foundation for the development of the national economy, and electrified railways are the direction of future railway development. The catenary is the most important part of the electrified railway system, and its health assessment and maintenance work is very important. At the same time, because the catenary is exposed to the natural environment all the year round, considering that there is no redundant backup equipment, and the mechanical and electrical properties of the catenary, any slight fault in the catenary will affect the operation of the train, and it will affect the busy railway network. Huge economic losses will result. [0003] In reality, the management of the catenary is based on ma...

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Problems solved by technology

[0004] First, most of the existing catenary management evaluation mechanisms are binary, that is, defect faults occur and defect faults do not occur; they cannot reflect changes in the corresponding health of the catenary over time

[0005] Second, in some of the few catenary equipment health evaluations, the personal experience of experts is overly relied on, and the health evaluation of catenary equipment is based on the experience value of experts, without taking into account the rarity of experts and the one-sidedness of their opinions in reality

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