Dominican Sisters Photovoltaic Array

As part of the project JDRM provided electrical engineering design services. The existing electrical power usage of the campus was investigated to size an array to the campus load profile. The PV Array options were modelled for production in PVSyst. Two sites on the campus were selected to place the PV Arrays, north campus area for a ground mount and the south campus area for the carport canopy. 

The ground mount canopy was connected to the campus medium voltage distribution system. This connection required modifications to the distribution system including a new medium voltage switch, recloser, CT-cabinet, and transformer. Relaying was updated to allow the inverter system to modulate to zero export of power. 

The canopy array was connected into a local building electrical distribution system, A low voltage feeder was extended from the building to the parking lot. In the parking lot a distribution system was constructed to provide power to electric vehicle chargers and to accept the PV Array power generation. 

Interface to the utility was provided to secure the interconnection agreement for the PV Arrays. After installation was completed, we supported the owner and contractor to trouble shoot and update the control system programming for smooth operation of the system. The PV Array was installed as envisioned. The power usage for the campus was reduced from the PV array production.