A measurement-based model validation tool of large scale power systems

Model validation is a basic and important work to ensure the dynamic simulation accuracy which influences the decision of power system design, planning, operation and control. Because large scale power systems have a great many components, the model validation work is very complex. A measurement-based model validation software(PSMV) is introduced in the paper. Current simulation accuracy can be evaluated by trajectory comparison between measurements and simulations all around the grid. Effects of models and parameters to the dynamic trajectories during a disturbance can be investigated by modification of model types and parameter values. Dominant parameters that can be reliable estimated for a certain trajectory are selected by trajectory sensitivity ranking. Parameter estimation of large scale power systems can also be performed efficiently using the software. The software has been used in Northeast China Power Grid Company.