Practical Challenges in Setting of Distance ProtectionZones: A Study on the Transmission andSubtransmission Network of Semnan

This study addresses the challenges associated with thedistance protection relay settings in power systems (asstandardized in the Iran protection grid code), focusing on issuesarising from infeed currents and coupling effects. Theinvestigation employs simulations on the Semnan transmissionand sub-transmission network, highlighting the impact of parallellines, coupling, and infeed currents on relay performance inbackup zones

کلیدواژه ها:

Distance Protection ، Parallel Lines ، Infeed Current ، Over/Under Reach