I want to make my grid connected property function during (extended) blackouts and use the existing solar system to charge the batteries. It is a complex installation and I am not planning to do the installation myself but want to understand the possibilities before discussing the upgrade with an installer.
Current system:
3 phase grid supply
grid enters property at private pole, where meter box is installed
- 10m underground 3 phase cable to shed
100m underground 3 phase cable from shed to house
3 x Fronius Symo 5kW 3 phase inverters + Fronius Smart Meter installed at the house
12 x 270W panels per MPPT (6 x 12 x 270 = 19.44kW peak)
loads are located both in the shed and house
New system:
leave current system as is
in shed (logically, between the grid and loads)
install 3 x Quattro 48/10000
install 50kWh 48V battery connected to 3 x Quattro
A drawback of this new setup is that a failure of the Quattro and/or batteries system would lead to power loss. To avoid this, a (manual) bypass switch could be installed to revert back to current system. This will ensure power (assuming grid is up) when the Quattro/battery system is unavailable.
Questions:
1. Will this setup achieve what I set out?
2. The battery system I am considering uses a PACE P16S200A (model DL21382-20A-K4EN-ZJ) BMS that is said to be compatible with Victron inverters. Is there any experience with PACE BMS in general or this one in particular.
3. Can the Quattro be configured to limit feed in the the grid? I am currently limited to 15kW feed in, but am considering adding a solar system to the shed which would take me over the limit when load is low. Note: I cannot use the Fronius feed in limiter because a) it is unaware of the loads in the shed and would throttle solar generation even when not required and b) there is no data cable between the house (3 x Fronius Symo) and the shed.
4.There are plenty of Victron dealers in the area, but who would be capable of tackling this in the Brisbane, Qld, Australia area?