The invention relates to an automatic checking method for generator set grid-related protection and limitation. The method is suitable for large-scale power system stable simulation, and based on grid topology, the basic trend, dynamic component parameters and the grid-related protection constant value, a grid-related protection and limitation model is automatically generated, according to different running modes, a failure set is automatically formed, cooperative relationship static checking and time-domain simulation dynamic checking of generator set grid-related protection and limitation can be automatically achieved, and a corresponding checking result is given. According to the method, the problem that in an existing power system stable simulation program, the generator set grid-related protection and limitation automatic checking function is lacked is solved, and it is ensured that set grid-related protection can adapt to changes of the power grid running mode, and the method can be in best fit with an automatic device. On the basis of ensuring set safety, the dynamic adjusting capability can be fully developed, and the powerful support can be provided for safe and stable running of the power grid.