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Power systems are undergoing a transformation toward a low-carbonnon-synchronous generation portfolio. A major concern for system planners andoperators is the system dynamics in the high renewable penetration future.Because of the scale of the system and numerous components involved, it isextremely difficult to develop high PV dynamic models based upon actual powersystem models. The main contribution of this paper is providing an example ofdeveloping high PV penetration models based on the validated dynamic model ofan actual large-scale power grid - the U.S. Eastern Interconnection system. Thedisplacement of conventional generators by PV is realized by optimization.Combining the PV distribution optimization and the validated dynamic modelinformation, this approach avoids the uncertainties brought about bytransmission planning. As the existing dynamic models can be validated bymeasurements, this approach improves the credibility of the high PV models inrepresenting future power grids. This generic approach can be applied todevelop high PV dynamic models for other actual large-scale systems.

Large-Scale High PV Power Grid Dynamic Model Development -- A Case Study on the U.S. Eastern Interconnection