Current transformer transformation ratio detection device and detection method thereof

The invention discloses a current transformer transformation ratio detection device and a detection method thereof, and belongs to the technical field of power systems. The current transformer transformation ratio detection device comprises a host, a slave and a terminal, wherein the host is used for receiving a current transformer transformation ratio detection request issued by the terminal, collecting primary side current of the current transformer, collecting secondary side current of the current transformer at the same moment through the slave, and calculating the transformation ratio ofthe current transformer according to the primary side current and the secondary side current of the current transformer; the slave is used for acquiring secondary side current of the current transformer according to an instruction issued by the host and reporting the current to the host; and the terminal is used for receiving, outputting and displaying the primary side current and the secondary side current of the current