Method for Peration Control Obstacle location and Fault Prediction of Substation Based on Information Driven

Intelligent substation has the characteristics of information networking and digital transmission. The coupling degree between secondary equipment is increasing, which makes it more and more difficult to judge the functional effectiveness of substation operation control. This paper proposed on-line diagnosis method based on equipment function correlation, established a secondary system function correlation library including actual physical ports, and used DTW method to quickly match the actual function information with the standard information in the function correlation library on line, thus completing the operation control obstacle location of the secondary system of the intelligent substation. Aiming at the fiber link failure, combining with the physical port mapping relation, the fault optical port is further located. At the same time, this paper established an optical power prediction model, which can realize the early warning of optical link communication status before the occurrence of link failure and give the function affected by the link. Finally, the feasibility of this method is verified in the commissioning of a 220kV intelligent substation.