Control and protection system used for fan low-voltage ride-through testing device

The invention provides a control and protection system used for a fan low-voltage ride-through testing device. The control and protection system comprises a measuring unit, an IO unit, a logic control unit, a protection unit, a wave recording unit, a communication protocol conversion unit, a man-machine interaction unit and a wave recording analysis unit. The measuring unit transmits digital signals to the logic control unit and the protection unit through a data bus, the IO unit conducts data interaction with the logic control unit and the protection unit through CAN buses, the logic control unit transmits interrupt signals to the wave recording unit, the protection unit is communicated with the communication protocol conversion unit through a CAN bus, and the communication protocol conversion unit conducts protocol conversion to complete data interaction with the man-machine interaction unit. The control and protection system used for the fan low-voltage ride-through testing device has the advantages of being friendly in man-machine interaction, high in automation degree, stable, reliable, clear in structure, high in anti-interference performance, powerful in protection function and the like.