Long marshaled train medium-voltage alternating current extension power supply system and method

Abstract

A long marshaled train medium-voltage alternating current extension power supply system comprises a power supply circuit, a central processing unit, an executing mechanism and a displayer. The centralprocessing unit collects and monitors the state of a train and issues a control command, vehicle state information and driver guidance operation information through software operation. An alternatingcurrent extension power supply command output by the central processing unit is sent to a programmable device DO through a bus, and the DO uses the command as a triggering condition to control an internal contact to act. Under a fault working condition, when a front or rear half-train medium-voltage power supply fault happens, an alternating current extension power supply mode is adopted, a powersupply source of the normal half train is extended to the faulty half train, the basic running requirement of the whole train can be met, the train is kept continuously running, and a control methodis reliable and stable.

Description

technical field [0001] The invention relates to an extended power supply technology for long-formed EMU trains, in particular to a medium-voltage AC extended power supply system and method for long-formed trains based on the train bus system TCMS. Background technique [0002] The construction and development of China's high-speed railways have put forward higher requirements for high-speed EMUs. The long-formed high-speed EMUs provide safe, reliable, high-speed and large-capacity capacity guarantees. Such as figure 1 As shown, the current typical long-marshalling train is composed of front and rear half trains, a total of 16 marshallings, the first half of the train is 8 marshallings, and the second half of the train is also 8 marshallings. Each 8-marshalling train has 4 auxiliary power supply systems inside, and the 4 auxiliary power supply systems are connected in parallel. It supplies power for the internal AC 380V bus of the 8-carriage train. The AC bus bars of the fr...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: when the 8 formations of the front / rear half of the long-formation train cannot normally provide medium-voltage alternating current, in order to ensure the basic operation requirements of the vehicle, the normal power supply of the front / rear half-train medium-voltage alternating current is extended to breakdown half train

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