  Solar photovoltaic (PV) generation is growing rapidly around the world.
However, PV generation, based on inverter, is fundamentally different from
conventional synchronous generators. It is of vital importance to understand
the impacts of increased penetration of PV generation on power system dynamic
performance. This paper investigates frequency response of the Electric
Reliability Council of Texas (ERCOT) with high PV penetration in the future
year. In this work, a realistic baseline dynamic model is validated using
synchrophasor measurements. Then, dynamic simulation is performed to evaluate
the impacts of high PV generation on frequency response.
