Performance detection method and device for vehicle auxiliary electrical system and terminal

Abstract

A performance detection method and device for a vehicle auxiliary electrical system, and a terminal, the method comprising: obtaining a plurality of sample data from historical data generated by normal operation of the vehicle auxiliary electrical system, with each sample data comprising performance index influence factor information and associated performance index values; training by utilizing the performance index influence factor information and the associated performance index value to obtain a performance detection model; obtaining to-be-detected data in a preset time period, wherein theto-be-detected data comprises performance index influence factor information and associated performance index values; based on the performance index influence factor information in the to-be-detecteddata and the performance detection model, calculating to obtain a performance index expected value; and calculating a deviation value between the performance index value and the performance index expected value in the to-be-detected data, and judging whether the performance of the vehicle auxiliary electrical system in the preset time period is abnormal or not based on the deviation value. According to the technical scheme, performance prediction and detection can be carried out on the auxiliary electrical system.

Description

technical field [0001] The invention relates to the technical field of electrical systems, in particular to a performance detection method, device, and terminal of an auxiliary electrical system of a vehicle. Background technique [0002] The auxiliary electrical system of the EMU is a system that provides electric energy for all the electrical load equipment of the EMU (except the traction power system), mainly including the battery and charger system, medium and low voltage electrical equipment, and auxiliary power supply system. The auxiliary power supply system is in a very important position in each system of the EMU, and the auxiliary converter is the core power supply equipment of the auxiliary electrical system. Its power is provided by the intermediate DC link of the traction converter, and the auxiliary converter will come from the The intermediate direct current of the converter is converted into three-phase alternating current to provide power for the auxiliary p...

AI Technical Summary

Problems solved by technology

[0004] However, at present, the state detection and daily maintenance of the auxiliary power supply system of the EMU are still focused on the faults that have occurred, and there is still a lack of applicable methods and effective technologies for early maintenance of faults.

This strategy of scheduled maintenance and after-the-fact maintenance cannot meet the requirements of improving the operating efficiency of high-speed EMUs and reducing operating costs.

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