Train control method and device for ground automatic passing-over of split phase

Abstract

The invention discloses a train control method and device for ground automatic passing-over of a split phase. The train control method comprises the steps that in the process that a train passes overthe split phase, a power supply state of a traction network is detected in real time, a traction converter is controlled according to a first control mode or a second control mode, according to the first control mode, when it is detected that the traction network is subjected power losing, a rectifier is controlled to be locked, and a traction inverter is unloaded, when it is detected that power supplying of the traction network restores, the rectifier is restored to be started, and traction force or braking force of the traction inverter is restored; and according to the second control mode,when it is detected that the traction network is subjected power losing, the rectifier and the traction inverter are controlled to be locked, when it is detected that power supplying of the traction network restores, the rectifier is controlled to be restored to be started, and after the traction inverter is controlled to be restarted with residual magnetism, the traction force or the braking force is restored. The train control method and device can be matched with various ground split phase passing-over devices to control the train to pass over the split phase, and have the advantages that when the train passes over the split phase, the time of losing the traction force is short, an auxiliary system is not subjected to power failure, and safety and reliability are high.

Description

technical field [0001] The invention relates to the technical fields of electrified railway traction power supply technology and train control technology, in particular to a train control method and device for automatic phase separation on the ground. Background technique [0002] The traction power supply system of trains such as electric locomotives and EMUs is single-phase power supply, and usually adopts segmental power supply mode, such as figure 1 As shown, the traction transformer in the traction substation converts the three-phase AC power of the power system into two single-phase AC power, and each is responsible for the power supply task of a certain distance section (usually 10-50km). The insulating section is used for electrical isolation, so there is an electric-free zone, which is the electrical phase separation zone of the traction power supply system. Over-phase means that the train passes through the electric phase-separation area, and corresponding counter...

AI Technical Summary

Problems solved by technology

[0006] When using the ground automatic over-phase separation device to control the train over-phase separation, at present, after the train over-phase separation is detected, all pulses of the traction converter are immediately blocked, the train loses traction and is in a idling state, and the ground switch is completed after a certain period of time (about 130ms) After the switchover restores the power supply, delay (about 6s) and wait for the residual magnetism of the motor to disappear before starting the inverter to avoid overcurrent at inverter startup caused by the residual magnetism of the traction motor, and it takes a certain period of time (at least 1s) to establish excitation after the inverter starts The current, and then the train restores the traction according to the driver’s traction handle. The traction recovery takes a long time (at least 5s or more), which makes the train completely lose traction for a long time (at least 7s or more) during the automatic phase separation process on the ground, which cannot reflect the above The ground automatic over-phase device controls the advantages of short power loss time of the traction network, especially the dead time of the electronic switch automatic over-phase device is only a few milliseconds, and the above-mentioned train control method cannot give full play to the performance of the ground automatic over-phase device

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