摘要：Calculation of short circuit fault current ratings are more important in power systems to design the ratings of relays. In this paper about wind turbine system connected to the utility grid through load bus and utility bus is discussed and in this system the Short circuit fault current ratings can be calclated using electrical power system analysis software (ETAP). This software is intilligent and it can perform, monitoring, simulation, optimization, and control of electrical power systems. Here the short circuit current ratings calculated for wind generating system is connected to the utility grid using ETAP software and faults are characterized by LG faults only. It can analyses the with different frequencies in ETAP and also faults are applied every bus like load bus, generator bus and combination of load bus and generator bus using ETAP simulation results..
