A Wide Area Pattern Analysis Method in Power System Model Validation

A fuzzy decoupling technique is proposed for model validation of large-scale power systems. To solve the problem of incredibility lying in power system dynamic simulations, a wide area pattern (WAP) is defined which reflects the parameter effects of certain component to the space-time trajectories, especially with consideration of the characteristics of huge amount of measurements and model parameters in large-scale power systems. Based on the clustering analysis of WAPs of certain component throughout the grid, a fuzzy mapping relationship can be obtained between the model parameters and the space-time trajectories, and then measurement-based parameter calibration can be performed according to the strong mapping relationships. A calibration priority indicator is also given. At last, the rationality of the method is discussed in the IEEE 39 bus system.