Summary

This automation will react on changes of energy imported or exported from the grid.
It will control the Photovoltaic power generation by setting the limit to a value avoiding exporting to the grid

Required sensors / entities

GridPowerMeters:

Sensors measuring Grid import or export e.g. all 3 phases in W.
All power meters will be summed up to define the total grid import or export.

PVPowerMeters:

Sensors measuring PV Generation in W
If sevaral Sensors are selected, those will be summed up.

NonPersistantLimit:

Entity to set the non persistant absolut limit in W. It should be the non persistant limit to avoid too many writes towards the flash memory.

InverterOnlineStatus:

Entity indicating if the inverter is available ('On' -> available)

Kudos for the simple algorithm and idea go to:
https://selbstbau-pv.de/wissensbasis/nulleinspeisung-hoymiles-hm-1500-mit-opendtu-python-steuerung/

Change log

Version: 0.0.5

• Add handling for different channel generation
• Add gridmaxpoint to set the limit to upperlimit again

Version: 0.0.4 - Add interval trigger to prevent changes happening to often

Version: 0.0.3 - Add parameter to define, at which feed in power the controller will get active. Also add parameter to select the control mode

Version: 0.0.2 - Improve Error handling in case sensors are unavailable

Version: 0.0.1 - Initial commit