IEEE 300-bus modified test system s@dmin3 March 31, 2020 The IEEE 300-bus modified test system contains 69 generators, 306 transmission lines, 174 transformers and 197 loads. All the generators are equipped with an IEEE type-1 exciter and a simple turbine governor. Download Files IEEE 300-bus modified test system (pdf, emf)PowerWorld Files (pwd, pwb) * Simulator 17 or newer