Safety prediction method of pantograph-catenary relationship of motor train unit

Abstract

The invention provides a safety prediction method of a pantograph-catenary relationship of a motor train unit, which comprises the following steps: acquiring data of two detection indexes of the pantograph-catenary relationship; judging whether the relativity of the two detection indexes meets a preset condition or not, and if so, carrying out regression analysis to the data of the two detection indexes, and setting up a prediction model; and adopting the prediction model to predict the safety of the pantograph-catenary relationship of the motor train unit during running. By the method, the relationship between two detection qualities can be analyzed, so that the safety of the pantograph-catenary relationship of the motor train unit during running can be effectively predicted.

Description

technical field [0001] The invention relates to the technical field of the pantograph-catenary relationship of an EMU, in particular to a safety prediction method for the pantograph-catenary relationship of an EMU. Background technique [0002] The pantograph is a key component of the EMU, and the normal contact between the pantograph and the catenary wire is one of the important conditions to ensure the normal operation of the EMU. During the operation of the EMU, the pantograph and the catenary line (hereinafter referred to as the pantograph-catenary) are mutually dependent, mutually restricted and interacted with each other both electrically and mechanically. [0003] However, with the continuous increase of the speed of the EMU, the influence of the pantograph-catenary relationship on the speed of the EMU has gradually emerged. For example, on a high-speed line, the vertical vibration of the pantograph is intensified, and the lift of the catenary line is also increased....

AI Technical Summary

Problems solved by technology

As another example, the pressure between the pantograph and catenary increases, and the geometric irregularity of the catenary will have a more obvious effect on the pantograph at high speeds, resulting in more serious hard point impacts, off-line and other harmful phenomena, which will directly lead to The pseudo limit of the speed of the EMU affects the safe operation of the EMU

[0004] Due to the limitation of the site environment, it is impossible to manually detect the lines of some EMUs

Some existing analysis researches on pantograph-catenary detection data mainly use methods such as harmonic analysis, power spectrum analysis, and waveform analysis. Although these methods can find out whether the waveform is in the time domain or frequency domain through observation and calculation from the perspective of waveform analysis of detection data, According to the change characteristics of the detection index, some characteristics of the detection index during the operation of the EMU can be obtained; however, because it can only rate and mathematically model a single detection quantity, it cannot find the relationship between the detection quantities, so it cannot effectively predict the EMU. group security

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