There is a big Question with Blackout and ESS. What if battery is full and sun is shining and there is no grid to export to. The system otherwise is correctly spec. with 1:1 rule and appropriate kwh/wp installed.
Question:
Is there a compatibility list of PV Inverters that support frequency power reduction? I cannot find this in any manual - mostly min and max frequency is given in Fronius and Solplanet Inverters.
Fronius Dynamic Power reduction is something else entirely. I only find the working range of inverters. LAN GX connection is not what I want this should work with generic PV Inverters.
For example Fronius *should* turn off with 66Hz. But I dont see it would reduce power at 55Hz.
I cannot find which AC coupled PV Inverters reduce output if the frequency is above a certain range.
There is a sentence in the manuals:
Note that although the MG50 for instance has a higher start frequency of 51Hz, there is no real drawback using the proposed value of 50.2Hz. The system will just increase the frequency until the PV inverter regulation kicks in. The value of 50.2Hz will work with a broader range of PV inverters/grid codes.
Question 2:
This makes me assume that no matter what PV Inverter is connected: In the case of a No Grid + Battery full situation a 3 Phase ESS should increase the frequency until the PV comes offline with the ESS assistant? Am I correct?