Information Regarding Limiting of the Active Power Feed-In
The parameter Operating mode active power setting must be set to Active power limitation P via system control or to External specification via communication for the inverters.
When using a Moxa device with ripple control receiver, in the Modbus configuration, the profile MOXA1214_PLimit must be selected.
NOTICE
Responsibility of the system operator for limitation of active power feed-in
The system operator is responsible for the accuracy of the information on limiting the active power feed-in and the nominal system power.
- Ask your grid operator beforehand whether you are permitted to use the Sunny Home Manager to limit active power feed-in (Manufacturer's Declaration "Feed-In Management in Accordance with the Renewable Energy Sources Act (EEG) 2012 with Sunny Home Manager (SHM) from SMA" available at www.SMA-Solar.com).
- Set the limitation of active power feed-in required by the grid operator. If you are not sure about this, contact your grid operator.
- Ensure you have correct information on the nominal PV system power. If you extend the system, adjust the value for the nominal PV system power accordingly.
Ensure that your feed-in meter complies with the requirements.
If your grid operator only allows a certain active power feed-in into the utility grid, the Sunny Home Manager can monitor and fulfill this requirement by reducing the PV generation of the inverters when the specified limit is exceeded.
This takes into account that in times when your PV system generates a lot of PV power, which is also used directly by loads - household appliances or a battery that is being charged - a PV power higher than the feed-in limitation is allowed regardless (dynamic active power limitation).
In addition to the dynamic limitation of PV generation, the Sunny Home Manager can also use intelligent energy management to ensure that loads in the household are switched on at precisely those times when so much PV energy is available that the feed-in limit will be reached. If switching on a load means that more power is consumed directly in the household, the PV generation must not be reduced by as much or must not be reduced at all.
For the function Limiting of the active power feed-in, at least one measurement at the point of interconnection is required.