Control device and method for HSCB automatic re-operation under subway train VVVF fault work condition

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 meth