Running the inverters in parallel synchronized in a three phase configuration, 2 per phase, 224/130. Since the power plant is centrally located, our longest run

Running the inverters in parallel synchronized in a three phase configuration, 2 per phase, 224/130. Since the power plant is centrally located, our longest run is about 270m. It’s at the edge of what we can do with the cable we have buried, so if we need to extend or add significantly more capacity we will probably go up to 440v for that segment, with a substation at the PED4 utility hut. Better efficiency in step up/step down is one of the reasons we chose 3 phase power. The panels are mostly centralized with each string being a home-run to the power plant but we are building out an additional 10KW on a rooftop about 200 yards away, so that will be 600VDC buried cable. We are testing small ( panel-back attached )grid-tie inverters for supplemental power at point of use, but we will see how much we can add before it results in stability issues. It would be great to be able to put a panel or two wherever it’s handy and just tie each panel separately into the ac distribution.