Control device and method for hscb automatic re-introduction under vvvf failure condition of subway train

Abstract

The invention discloses a control device and a method for HSCB (high-speed circuit breaker) automatic re-operation under a subway train VVVF (variable voltage and variable frequency) fault work condition. The device comprises a drive control unit, an analog circuit processing unit of the drive control unit is used for converting a VVVF state signal into a voltage signal and real-timely outputting the voltage signal to a real-time fault protection programmable logic unit and a digital signal processing unit for use in real-time fault hardware protection and real-time voltage and current sampling, and the digital signal processing unit is connected with an embedded processing unit through a parallel data bus; the real-time fault protection programmable logic unit and a digital quantity input / output programmable logic control unit are connected with the embedded processing unit through the parallel data bus; the embedded processing unit is connected with a subway train network system through an MVB bus. The method is realized based on the device. The device and the method have the advantages of fast operating speed, precise sampling, precise control, and high automatization degree, and can reduce the operating strength of a driver and improve the operating reliability.

Description

technical field [0001] The invention mainly relates to the control field of subway trains, in particular to a control device and method for HSCB automatic re-initiation under the VVVF failure condition of subway trains. Background technique [0002] With the expansion of city scale, urban traffic problems are becoming more and more prominent. Metro trains have become one of the important means to solve urban traffic because of their large capacity, fast speed, safety and reliability, and punctual operation. Frequency conversion speed control system (hereinafter referred to as VVVF) is the core component of subway train traction control. Frequency conversion speed control system (VariableVoltageandVariableFrequency) is a device that can achieve constant flux and control the speed of the motor by changing the frequency and voltage at the same time. During the operation of the subway train, there is a working condition that the high-speed circuit breaker (High-Speed ​​Circuit ...

AI Technical Summary

Problems solved by technology

Therefore, even if the driver operates the fault reset button to reset the fault within this fixed period of time, and then presses the HSCB close button, VVVF cannot close the HSCB

Because the driver still needs to pay attention to a lot of other information of the train during the operation of the main line, the existing processing scheme has high requirements on the driver’s operation, and it is difficult for the driver to confirm the fault VVVF status in time, which may easily cause the HSCB train to fail to resume power and put into operation in time due to fault disconnection, thus Leading to delays in the operation of the main line of the entire subway line

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