Measuring system and measuring method based on wide-range current transformer

The invention discloses a measurement system and a measurement method based on a wide-range current transformer, and belongs to the technical field of electric power measurement. The system comprises a current transformer, and the current transformer comprises a movable magnetic core, a primary winding, a secondary winding and a detection winding. The divider resistor is used for receiving the induced voltage signal and the induced current signal, and transmitting the induced voltage signal and the induced current signal to the signal conditioning circuit after carrying out voltage division on the induced voltage signal and the induced current signal; the signal conditioning circuit transmits the induced voltage signal after voltage division to the digital detection module, converts the induced current after voltage division into a voltage signal and transmits the voltage signal to the digital detection module; and the digital detection module is used for determining the higher harmonic content of the current