Abstract
This paper addresses the importance of Electromagnetic Transients (EMT)-type simulations for protection studies in power networks with inverterbased resources (IBRs). Firstly, real records taken from IBR interconnecting lines are analyzed to explain possible effects of transient events on phasor-based protection elements. Then, EMT-type simulations are carried out to demonstrate the impacts of IBRs on protection elements, which can be analyzed only via EMT programs (EMTP). Finally, since traveling wave (TW)-based solutions have been reported as promising alternatives to complement conventional protection schemes in the presence of IBRs, a list of system EMT modeling recommendations is presented to guarantee realistic TW studies in IBR interconnecting lines. The conclusions show that transient events in power systems with IBRs must be considered in protection studies, pointing out the importance of EMT-type simulations.
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