Method for early warning and identifying relay protection fault of intelligent substation

The invention discloses a method for early warning and identifying relay protection faults of an intelligent substation. The method specifically comprises the following steps: step 1, carrying out fault diagnosis on hardware input signals of relay protection equipment; step 2, software fault diagnosis of the relay protection device is carried out; step 3, comprehensively developing an intelligent substation relay protection anti-error early warning platform based on MATLAB according to the step 1 and the step 2; and step 4, based on the MATLAB intelligent transformer station relay protection anti-error early warning platform, according to transformer station fault recording sampling information, realizing accurate identification of a fault area, pre-judging a possible action condition of protection, and giving early warning information. According to the intelligent substation relay protection fault early warning identification method, the possible fault condition of the relay protection device can be determin