“…Therefore, the data from power transformer and current transformers have been taken from Irantransfo Co. in Zanjan, Iran. For modeling the ultra-saturation phenomenon, i pa , i pb , i pc , i a , i b , i c , φ a , φ b and φ c can be solved from (1-4), (11)(12)(13)(14)(15)(16) and (23)(24)(25)(26)(27)(28)(29). i pa , i pb , i pc , i a , i b and i c are the primary and secondary currents of the three-phase power transformer.…”