Application of digital twin technology in transformer relay protection

Velikim napretkom digitalizacije u elektroenergetici postupno je došlo do primjene tehnologije digitalnog blizanca u projektima zaštite i upravljanja u postrojenjima. Simulacije korištenjem takve tehnologije znatno skraćuju vrijeme trajanja poslova te osiguravaju optimalne rezultate za širok spektar mogućih simulacija koje ova tehnologija nudi. Ovdje je fokus bio na usporedbi ispitivanja diferencijalne zaštite korištenjem digitalnog blizanca te ispitivanje sa samim diferencijalnim zaštitnim relejem. Trebalo je postaviti određeni proizvoljni kvar koji se simulirao za oba načina ispitivanja zaštite. Simulirano je stanje prije kvara koje je predstavljalo nominalne uvjete, stanje u vremenu trajanja kvara te stanje u sustavu nakon otklanjanja kvara.With the significant advancements in digitalization in the field of power systems, the application of digital twin technology in protection and management projects within facilities has gradually emerged. Simulations using this technology greatly reduce the duration of tasks and ensure optimal results for a wide range of possible simulations that this technology offers. The focus here was on comparing the testing of differential protection using a digital twin and testing with the actual differential protection relay. A specific arbitrary fault was set up, which was simulated for both protection testing methods. The simulated state prior to the fault represented nominal conditions, followed by the fault duration, and finally, the post-fault state after the fault was cleared