Hallo Valentin Team,
Hope you all are enjoying the summer !!
Apparently, zero grid injection systems are performing pretty bad, especially in case of unbalanced loads. We have a system performing worse than what we expected from simulations. Our theory is that this could be becasue of unbalanced load distribution on the phases where one of the phases has very low consumption which is consequently limiting the generation as the inverter has balanced output on all its phases
I simulated with curtailment at feed-in point but this did not help us in preparing for what's about to come. Is there any way to make our simulations reflect such scenarios in the future?
Of course, we did not use the customer's actual consumption profile in the simulations. Do you think that would have made the difference?
Please see the gap between consumption and generation values in the attached pic. There is always a huge buffer between consumption and generation to ensure zero grid feed-in
Am I right that you have to purchase the PVSOL "Premium" package to get the 3D environment
to be able to have flat roof panel to panel shading included in the simulation?
Reading back on features of the regular 900 euro PV*SOL and the 1300 euro Premium version, and my conversation with Martin, which is quoted here,
I must conclude that the regular PV*SOL does NOT perform flat roof panel row-to-row shading calculation, although all information is present; no 3D drawing is necessary,. Actually, 3D drawing is in most cases just too much work.
This is my sobering conclusion for an otherwise great software package.