There are already some posts about incorrect AC values, but none of them with the exact same situation or the same information.
|My system:||3-phase ESS with MultiPlus-II 48/8000/110-100|
||4x MPPT 250/100 VE.CAN
||4x Pylontech US5000 (1 currently out of order)
|Mode:||Optimized (without BatteryLife)|
|Multiphase regulation:||Total of all phases|
Sometimes the GX device shows way too high values for AC loads.
On the example screenshots below it displays 1667 W whereas the correct value is around 379 W.
I visualize the data (from MQTT) in Grafana. But for Energy Consumption I use data from a separate ABB meter installed at the output of the Multis.
The 13,3 kW feed-in match more or less with the value shown on the grid provider's smart meter and the 379 W consumption agree with the ABB meter.
So, where does the rest of the PV energy go?
If I take the values from the GX, the calculation adds up more or less.
15 139 W - 13 299 W - 1667 W = 173 W
But if I use the correct AC Loads value:
15 139 W - 13 299 W - 379 W = 1 461 W ?!?
The deviation can also be seen on my graphs:
Yesterday (when we had constant sunny weather) the deviation began after the the batteries were fully charged and today (changing weather) it only appeared during a phase where the PV power was at maximum.
So it seems to occur, if
- the battery is fully charged and
- PV production is at maximum
Does anyone experience the same thing?
Battery is full, Grid value is correct, PV values seem also correct (if I look at the graph from yesterday). So, where does the rest of the PV energy go?