Rail transit vehicle and multi-current-system switching control method and system thereof

Abstract

The invention discloses a rail transit vehicle and a multi-current-system switching control method and system thereof. A sensor module in a traction converter is used for collecting power grid state signals of an overhead line system, a central control unit is used for conducting real-time monitoring and comparative analysis and processing on the winding state of the traction converter and the power supply mode of the overhead line system, and a change-over switch is controlled to switch under the condition of being inconsistent, so that the winding state of the traction transformer is changed, the switching of the train power supply mode is realized, and the advantages of being safe, reliable, easy to implement and convenient to popularize and apply are achieved. The method is implemented by adding the change-over switch and logic control under the condition that the traction converter is not changed, so that the rectification and redevelopment cost of the traction converter is reduced. Besides, after the winding state of the traction transformer is judged to be consistent with the train power supply mode, a main circuit breaker is directly closed, so that the operation frequency and the fault occurrence rate of the change-over switch are reduced, and the reliability and the mechanical life of the change-over switch are ensured.

Description

technical field [0001] The invention belongs to the technical field of train power supply, and in particular relates to a rail transit vehicle and a multi-stream conversion control method and system thereof. Background technique [0002] With the rapid development of the rail transit industry, the speed of trains is getting higher and higher, and there are more and more demands for trains to run across regions and countries. Due to the different power supply systems of rail transit lines in different countries or regions, in order to enable trains to run flexibly in power supply areas of these different power supply systems, most of them will use multi-stream trains to meet different power supply systems by switching the power supply mode of the traction main circuit power supply needs. How to accurately identify different power supply systems and switch to the corresponding main circuit mode safely and reliably is one of the key technologies to be solved for multi-stream t...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a rail transit vehicle and its multi-stream system conversion control method and system to solve the problems of insufficient flexibility of the existing manual switching means, high requirements for operators, and potential safety hazards, as well as identification The practicality of the switching method is not high, and it is necessary to add signs and devices, which increases the problem of space and cost

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