In order to ensure the dynamic monitoring of equipment time synchronization of the new intelligent substation

we analyze the fragility of the central switch device’s time synchronization.Based on the colored Petri network

we build the model of its equipment time synchronization’s operation process of new intelligent substation

and show the attack model of colored Petri network for central switch device’s time synchronization.According to the equation of state to verify the attack accessibility through the linear algebra math analysis tools

we find the time synchronization vulnerability points

and propose solution accordingly.