Development of the power restoration training system shell against massive blackouts

This paper presents an operator training system shell for power system restoration against massive blackouts. The system shell is designedespecially focused on the generality and convenient setting up for initial condition of simulation. The former is accomplished by using power flow calculation methodology, and PSS/E data is used to set up the initial state for easy setting. The power flow algorithm is developed to simulate reconnecting separate subsystems which are caused by blackout. The proposed system shell consists of three major components - a power flow (PF), a PSS/E data conversion(CONV), and a GUI module. The PF module calculates power flow and then checks overvoltages of buses and overloads of lines. The CONV module composes a Y-Bus array and adatabase at each restoration action. Theinitial Y-Bus array is composed from PSS/E data. A user friendly GUI module is developed including a graphic editor and a built-in operation manual. Simulators for several power systems can be easily constructed using the graphic editor because this system shell is designed for universal application. The maximumprocessing time for one step operation is 15 seconds, which is adequate for training purpose. Comparison with PSS/E simulation proves accuracy and reliability of the training system shell.