Vertical integration of protective device is a trend in the design of urban miniaturized IEC 61850 based substation It is of great practical significance to study the reliability analysis model and me

The results show that the reliability of the vertically integrated device is affected by the failure rates of different modules, and the redundancy configuration of the device can effectively improve its reliability. In addition, the reliability analysis model and method proposed in this paper can provide a scientific basis for the design and operation of urban miniaturized IEC 61850 based substations, and can also be applied to the reliability analysis of other complex systems.