Project #1691

The PV Project 5.25 MW AC, Richmond, Rhode Island facility electrical distribution system is fed from RI Energy utility connection that feeds (2) AC/DC distribution skids using open-ring connection. Each skid consists of Ring Main Unit (RMU), 12.47/0.6kV transformer, inverter and DC fuse cabinet to which PV strings are connected via DC combiner boxes. The references used to conduct the study are National Fire Protection Association, NFPA-70E and NFPA-70 and Institute of Electrical and Electronics Engineers, IEEE-1584-2018, IEEE-141, IEEE-214, IEEE-242, IEEE-399 and IEEE-551. This report contains the results of the photo-voltaic system Power System Analysis that consisted of a Short Circuit Study, Equipment and Device Evaluation Study, Protective Device Coordination Study and Arc Flash Hazard Analysis.