With the development of the strong smart grid and the ubiquitous power internet of things

the substation has gradually developed into a smart substation with holographic sensing

independent inspection

remote monitoring

active early warning and intelligent decision-making functions. In the secondary system of intelligent substation

the intelligent linkage of each subsystem embodies the ubiquitous IOT of power equipment

which is one of the core technologies supporting intelligent operation and maintenance of substation. Based on the basic structure of intelligent substation auxiliary equipment monitoring system

this paper analyzes the technical realization mode of intelligent linkage in substation

combs the significance of various intelligent linkage functions

and uses simulation cases to visually display the department intelligent linkage functions. The research content can provide some engineering reference for the construction of intelligent substation.