I am a M.Tech student from Institute of Technology, Banaras Hindu University, Varanasi India. I am working on Gas Insulated Substation (GIS). I have to simulate Transient Enclosure Voltage (TEV) in a GIS bus duct. TEV also known as Transient Ground Potential Rise(TGPR) is generated due Disconnect Switch operations on a GIS bus. IEEE papers available on this topic have used EMTP or ATP(Alternative Transient Programme) for Digital simulation of TGPR in GIS bus duct. I have studied the various transmission line and cable models given in the master library of PSCAD. Sir, I want to know whather PSCAD can be usefull for studying TEV in GIS. Can I get some models for this. The GIS cable or bus duct is a overhead cable with SF6 gas filled between the conductor and enclosure. How to model such a system in PSCAD ?