IEEE 9-bus modified test system s@dmin3 March 31, 2020 The IEEE 9-bus modified test system consists of 3 synchronous machines with IEEE type-1 exciters. There are 12 buses, 6 transmission lines, 6 transformers and 3 constant impedance loads. The total load demand is 315 MW and 115 MVAr. Download Files IEEE 9-bus modified test system (pdf, emf)PowerWorld Files (pwd, pwb) * Simulator 17 or newerDIgSILENT Files (pfd) * PowerFactory 15.1 or newerHYPERSIM Files (pdf, zip) * “We would like to acknowledge OPAL-RT Technologies for providing us the HYPERSIM files of the IEEE 9-bus test system”