Development of a Roadmap to Integrate System Wide EMT Study Capabilities in Ireland

Historically electromagnetic transient (EMT) tools have been used to conduct very detailed analysis of localised issues in isolation from the rest of the system. Typical examples of this application focus on switching and lightning transients as part of insulation co-ordination studies. More recently, and specifically driven by the increased integration of inverter based resources (IBRs), reduction in system strength and high prevalence of HV/EHV cable circuits introducing low order harmonic resonances, EMT has been identified as a complementary tool to assess the dynamic stability and associated reliability issues at system level. Studies which traditionally would have been conducted using phasor-domain transient (PDT) tools may need to consider EMT simulations now.