I have a 3 phase supply with loads roughly balanced across all three phases.
I have a single phase PV system on one of the phases.
One of the first things I did was to check how the meter was recording import/export. I was pleased to discover that if I was exporting on the PV phase and consuming on the other 2 phases the meter stopped recording until the consumption on the 2 non solar phases exceeded the export on the PV phase.
Monitoring with emoncms over the last three months has indicated that it could be worth fitting a battery. The problem Is that the battery system I am considering has a single CT input to control charge and discharge. I don’t think I can use it on just the PV phase. I really need it to monitor all three phases so it charges when I am truly exporting and discharges when I am truly importing. Trying to get my head round this I wondered what the effect would be of a CT around all three phases although I don’t think I could get a CT big enough. If any one can think of an effective solution I would like to hear it.