Automatic test method for current transformation control unit, controller and automatic test system

The invention provides an automatic test method for a current transformation control unit, a controller and an automatic test system. The method comprises the following steps: a controller receives a test instruction of a test device, wherein the test instruction comprises information of an excitation channel and information of an excitation form; the controller determines an excitation channel in the controller according to the information of the excitation channel and tests the current transformation control unit to be tested by utilizing an excitation signal corresponding to the excitation form based on the excitation channel; the controller sends a test result to the test device. According to the automatic test method for the current transformation control unit, manual intervention on the test process and the acquisition of the test result is avoided, and the test efficiency is high.