Method for intelligently analyzing fault of traction converter

Abstract

The invention discloses a method for intelligently analyzing a fault of a traction converter. The method includes: 1) detecting corresponding various different fault information in advance when faults of different fault sources in the traction converter occur, forming a set of fault fusion representation information with various fault information detected corresponding to each fault source, and establishing a model of corresponding relations between the fault sources and the fault fusion representation information; and 2) monitoring a running state of the traction converter in real time, obtaining various real-time fault information to form fault fusion real-time representation information, and analyzing a fault source matched with the fault fusion real-time representation information according to the corresponding relation model. The method for intelligently analyzing the fault of the traction converter has the advantages of simple implementation method, capability of realizing intelligent analysis of the fault of the traction converter, and high fault analysis efficiency and precision.

Description

technical field [0001] The invention relates to the technical field of traction converter fault detection, in particular to an intelligent analysis method for traction converter faults. Background technique [0002] In the AC drive system of electric locomotives, the traction converter is responsible for the entire power conversion function, converting 50Hz single-phase AC into three-phase AC with variable voltage and frequency, thus providing power to the traction motor. Due to the complex structure of the traction converter, the components are greatly affected by the external environment and operating conditions, so failures often occur. At present, the fault analysis of traction converters is usually manually analyzed by technical or field service personnel based on experience. Due to the complexity of the structure and control principle of traction converters, the fault analysis of traction converters is also relatively complicated. When there are rare faults other than...

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Problems solved by technology

[0003] (1) The field service personnel usually cannot obtain the corresponding structure and design principle of the traction converter during analysis, but can only judge from the external fault phenomenon, and infer the possible fault cause by constantly trying to replace different parts, so The fault analysis process is complicated, the processing efficiency is low, and a lot of labor costs are required;

[0004] (2) Since technicians cannot accurately obtain external fault phenomena and information related to the operating environment during analysis, they can only analyze through fault logs and waveform files, which is not conducive to troubleshooting related faults and affects the accuracy of fault analysis;

[0005] (3) Regardless of whether it is field service personnel or technical personnel to analyze related faults, the accuracy of the manual fault analysis method is affected by the analyst's own fault analysis experience, and cannot effectively use historical analysis data for accurate analysis , the accuracy of fault analysis obtained by different analysts may be different

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