Traction converter fault early warning method and system

Abstract

The invention discloses a traction converter fault early warning method, comprising the following steps: extracting operation data of a rectification inversion module and a network from historical data, and constructing an EOVW energy index by using the operation data of the rectification inversion module to obtain data characteristics and fault information; associating the data features with thenetwork operation data according to vehicle types, vehicle numbers and time, performing clustering analysis operation on the associated data according to the vehicle types and fault types to obtain atime range of data exception before faults, and adding fault early warning labels to the exception data; and introducing all the data into a random forest classifier for iterative training until the classification accuracy of all the random forest classifiers reaches a threshold value, classifying the actual operation data by using the trained classifier, and sending early warning information if the actual operation data does not pass the classification accuracy. And the service life of the traction converter is prolonged, and the operation and maintenance cost is reduced. The invention also discloses a traction converter fault early warning system which has the above beneficial effects.

Description

technical field [0001] The present application relates to the field of rail transit fault early warning technology, in particular to a traction converter fault early warning method and system. Background technique [0002] The train is one of the main means of transportation in modern times, and it has played a great role in the transportation of passengers and goods. Its security issues are the top priority. [0003] Among them, the rectification and inverter module of the converter is the core component of the traction converter. In the prior art, in order to monitor the working state of the converter, various sensors (such as voltage, current sensor, etc.), when the module fails, the traction control unit of the converter will send the fault signal to the driver's cab, reminding the driver to take measures such as resetting, blocking the faulty converter, starting the backup converter, or even parking the vehicle, so as to To ensure the safety of the train. [0004] Ho...

AI Technical Summary

Problems solved by technology

[0004] However, the existing technology only uses sensors to detect the running status of the rectifier and inverter module, and gives an alarm when a fault signal is detected, that is, the fault signal is detected and sent to the driver's cab only after the fault actually occurs.

Once a serious failure of the converter (such as thyristor or diode explosion) occurs, the cost of repair and renewal is too high

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