Automatic test system of transformer protection design in Intelligent Substation

The transformer is an important part of intelligent transformer substation, and the design of an automatic test system of transformer protection can reduce the amount of work. In this paper ,we put forward a kind of the automatic testing system solution which bases on real-time digital simulation system (RTDS) and MATLAB check analysis program, and have made the detailed introduction about the design process. In the end, through the elaboration of the device test of practical application of a 220 kV smart substation transformer protection, we verify the feasibility of the test system.