Automatic passing neutral section control system and method for electric motor train unit

Abstract

The invention relates to an automatic passing neutral section control system and method for an electric motor train unit. The system comprises a traction converter and a transmission control unit, wherein the traction converter comprises a contactor control circuit, a rectifying module, a filtering intermediate direct current circuit, an auxiliary inverting module and an inverting module, wherein the filtering intermediate direct current circuit is connected with the contactor control circuit to finish charging under the control of the transmission control unit; under the control of the transmission control unit, the rectifying module is used for rectifying single-phase power-frequency power supply voltage into a rated intermediate direct current voltage needed by the traction converter during normal working; the inverting module and the auxiliary inverting module are respectively connected with the filtering intermediate direct current circuit and get electricity; the inverting module is used for inverting intermediate direct current into three-phase voltage to control a motor; and the auxiliary inverting module is used for inverting the intermediate direct current into the three-phase voltage for auxiliary converting load to use during normal working. The method is implemented on the basis of the system. The invention is advantaged in that the integration degree of the system is high, the automation degree of the system is high, the impact on a train in the automatic passing neutral section process can be effectively relieved, the comfort of the train is improved and the like.

Description

technical field [0001] The invention mainly relates to the field of rail traffic control, in particular to an automatic phase separation control system and control method suitable for electric train units. Background technique [0002] In order to balance the three-phase load in the power supply system as much as possible in the electrified railway, the catenary generally adopts the design method of segmental commutation power supply. In order to prevent phase-to-phase short circuit, an insulating device is used to divide the connection between the power supply arms of different phases, thereby forming a non-electrically isolated phase-splitting area (hereinafter referred to as "phase-splitting area") between the power supply arms of different phases, and each There is a phase-separation zone at a distance from the line. Due to the existence of the phase-separation zone, the EMUs will frequently pass through the phase-separation zone during operation. Accidents such as tra...

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Problems solved by technology

[0016] (1) In my country's electrified railway, there is a section of non-electric zone about 30m long every 20-25km. Frequent manual operations will increase the labor intensity of the driver, and other operations will distract attention, which will easily lead to excessive operation errors and affect the normal operation of the train

[0017] (2) Both the ground automatic switch automatic switching and pole-mounted switch automatic power-off schemes have huge construction, operation and maintenance costs, and the risk of traction converters and transformers being impacted by large currents when trains pass

[0018] (3) When the train automatic control power-off scheme is too phase-splitting, because the main circuit breaker is disconnected, the auxiliary inverter of the train will be shut down, causing the auxiliary loads of the train such as air conditioners and interior lighting systems to temporarily stop running

Because the train will frequently pass through multiple phase-separation zones throughout the entire operation, this will have a negative impact on the comfort of passengers and the life of auxiliary load equipment. The frequent start and stop of auxiliary loads will also seriously affect the service life of these loads

[0019] (4) Although there is an uninterrupted power supply device for auxiliary circuit over-phase separation, no reasonable solution has been proposed for how to restore the train to normal operating conditions after the auxiliary circuit uninterrupted power over-phase separation is completed, and the specific auxiliary circuit uninterrupted power over-phase phase control process also not clear

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