Contact network state evaluation method based on reliability and multivariate statistics

Abstract

The invention discloses a contact network state evaluation method based on reliability and multivariate statistics, and the method comprises the following steps: firstly selecting a to-be-evaluated contact network section, then calculating the reliability of a to-be-evaluated contact network, and dividing the state grade of the to-be-evaluated contact network according to the reliability of the contact network; sequentially calculating the dotting value and the state grade limit value of the to-be-evaluated contact network, finally drawing the calculated dotting value and the state grade limitvalue in the same state evaluation chart, correspondingly dividing the state grade regions of the to-be-evaluated contact network according to the state grade limit value, and comprehensively evaluating the state of the contact network. According to the invention, the states of the contact network can be divided according to the historical operation data of the contact network, the states of thecontact network are effectively refined, the state change process of the contact network from the normal state to the abnormal state can be displayed, a guarantee is provided for adjusting the statesof the contact network in time, and then the on-site contact network operation and maintenance cost is reduced.

Description

technical field [0001] The invention relates to the technical field of catenary state evaluation, in particular to a catenary state evaluation method based on reliability and multivariate statistics. Background technique [0002] With the rapid development of railway construction, the development of high-speed railway, as a large-capacity and economical transportation mode, is becoming more and more important. As the transmission line for high-speed railway operation, the catenary provides power guarantee for the high-speed railway. In order to make the high-speed railway operate normally, an accurate state evaluation of the catenary should be made. By evaluating the detection status of the catenary, not only can the problems existing in the catenary be discovered in time, but also provide a basis for the preventive maintenance of the catenary, and the catenary can be adjusted in the corresponding state to effectively reduce the occurrence of catenary failures. So as to ens...

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Problems solved by technology

[0003] At present, the inspection vehicle is mainly used to collect various parameters of the catenary, and then the electrical and mechanical parameters of the catenary, such as the guide height, pull-out value, height difference, hard point, contact force, etc., are measured through the sensors installed on the detection vehicle. Compare the collected data with the specified parameter range. When the collected data value exceeds the parameter range, it indicates that the catenary is abnormal. This evaluation method cannot comprehensively analyze all parameters, and can only make two kinds of "normal" and "abnormal" for the catenary. State evaluation, which in turn leads to insufficient judgment of the catenary status, unable to present the state change process in the middle of the catenary in time, ignoring the status change trend of the catenary, and failing to adjust in time before the catenary failure occurs. bring trouble

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