State Inference and Evaluation Technology of Relay Protection Based on Digital Twinning

Abstract The problems of relay protection equipment in such aspects as the insufficient depth data mining, not timely grasp status, and poor timeliness fault warning restrict development operation maintenance mode protection, which aims at “autonomous controllable, safe reliable, advanced applicable, intensive efficient”. This article studies comprehensive state evaluation action simulation deduction technology intelligent substation based on digital twins. It uses multi-source monitoring for quantity correlation analysis. constructs a key feature index library twin to model function software hardware states. Through collaborative linkage between physical devices models, can dynamically track operational status automatically update status. Finally, established high-precision model, are carried out. Then effectiveness scheme is demonstrated through example testing system.