Overcurrent protection circuit for CT induction power taking

The invention relates to an overcurrent protection circuit for CT induction power taking. The overcurrent protection circuit comprises a silicon controlled rectifier Q1, a triode Q2, a rectifier bridge D1, a comparator U11 and a CT loop, wherein the triode Q2 drives the rectifier bridge D1, the rectifier bridge D1 drives the silicon controlled rectifier, and when the triode Q2 is switched on, therectifier bridge D1 is switched on to trigger the Q1 to be switched on, so excess energy in a CT loop is discharged. Conduction of the discharge loop is controlled by the triode Q2, the Q2 is controlled by the output of the comparator, when the voltage behind the rectifier bridge in the secondary loop is higher than the reference voltage of the comparator, the comparator outputs high voltage, theQ2 is conducted, the rectifier bridge Q1 is driven to be conducted, redundant energy in the loop is discharged, otherwise, the Q2 is cut off, and the D1 is not conducted; As long as different reference voltage values ref are s