Adaptive circuit for monitoring and protecting device of electric power system

The invention provides an adaptive circuit for a monitoring and protecting device of an electric power system. The adaptive circuit comprises an input conversion circuit, a current switching control circuit, a timing control circuit and an output interface circuit, wherein the current switching control circuit is connected with the input conversion circuit; the timing control circuit is connected with the current switching control circuit as well as the output interface circuit; and the timing control circuit detects the output time of the output interface circuit and controls the connection and disconnection of the current switching control circuit according to the output time.