Detailed grid integration analysis of distributed PV

This paper shows examples of detailed PV grid integration analysis performed by Sandia National Laboratories (SNL) on two separate distribution feeders with two different simulated PV deployments for each. Through the use of advanced modeling tools and techniques, examples of time-series detailed feeder modeling are presented. Feeders in Utah and Georgia with simulated 100% PV penetration, either central or distributed, were studied. The analysis approach of each deployment type and location on the feeder is described, as well as the use of advanced PV output estimations for modeling maximum solar variability. Comparisons of the performance measured for each feeder, including maximum steady-state voltage and voltage regulation equipment operations, are shown. Impact results from the analyses are described, as well as any potential mitigations. Future analysis aspects are discussed in relation to the detailed study findings thus far.