Hello all!
I have nowhere else to go to try and fix this issue that I’m having ever since the battery system together with PVs and inverter were installed at our new home.
My installer is saying “we see the numbers and they are ok” refusing to come on-site and inspect possible issue with wiring, smart meter etc.
Long story short, I’m having an issue with, what my grid provider is calling, mirror consumption. Whenever the battery is being used for house loads, I can see that we’re not only taking that energy from the grid, but at the same time feeding almost the same energy to the grid. Easiest way to spot this is during the times when the sun is already set.
Blue is consumption from grid, green is feed-in.
The only way I managed to stop these insane feed-in spikes (for which I might even get fined by my grid provider, because my total feed-in limit is 0.8kwh) was to set feed-in limitation per phase at ~0.28kwh rather than setting a complete total at 0.8kw.
This is what I see constantly in the app
It is trying to constantly balance phases out which, I assume, is what is causing this phenomena.
Even my grid provider called and told me couple of reasons this “mirror” issue could be happening. In fact, they catch at least 30 cases per month in the country with people having the same issue. What I want to know is whether there’s any way to resolve this myself since my installer is quite unresponsive and oblivious that the issue exists at all hiding behind excuses that they made “multiple software updates” hinting that the issue is not on-site but rather software related.
Did anyone have this issue? If so, how did you manage to resolve it?
My setup is:
Battery - Sungrow SBH150 series 15kW capacity
Inverter - Sungrow Hybrid SH20T
PVs - AIKO -A445 10kW total