Cobra_Phil
New member
- Joined
- Aug 17, 2019
- Messages
- 8
I work on a small college campus in Papua New Guineawhere a solar system will be installed. The grid tied system is small enough that it will never supply all the power needed to cover the power demands of the campus, probably in the 10-12kw range,but it will help with the electric bill. We will also be installing a li-ion battery system, possibly in the 10kWh range. What we would like to do is during the day, power generated from the panels will be tied to the grid to lower the power bill and charge the battery, but at night power inverted from the batteries only go to a certain location, like the computer lab and security lights, not the whole campus because the battery would be discharged in a matter of a couple of hours. The only way I can think that this will work is by having two inverters. One connected to the PV array, grid, and batteryto charge it and then another inverter connected to the battery with the AC output going to computer lab and security lights. But this means that during the day the lab and lights can still only receive power from the battery which may be ok, I just don't know. Can someone shed some light if this is possible or if there is a correct way of doing it.
Thanks.
Thanks.