Substation intelligent electronic equipment time synchronization precision and punctuality precision test methods

The invention discloses substation intelligent electronic equipment time synchronization precision and punctuality precision test methods. The substation intelligent electronic equipment time synchronization precision test method comprises the following steps: S1, a time setting interface of a substation integrated automatic tester is connected with a standard time source, a tested IED device is connected with an in-station clock source, and the upper and lower ends of a detection hard pressure plate of the tested IED device are respectively connected with the positive and negative ends of an idle contact of the substation integrated automatic tester; S2, the substation integrated automatic tester sets the time through the standard time source, and the tested IED device sets the time through the in-station clock source; S3, the substation integrated automatic tester triggers the idle contact to be closed at a time T1; S4, the tested IED device receives an idle contact closing signal and generates an SOE recor