2 Design of PV Farms
SMA Solar Technology AG
6
IPC_STP-TI-en-14
Technical Information
2.2 PV Farm with Integrated Plant Control
The Integrated Plant Control function enables each inverter within a group of inverters to determine its individual
contribution in order to ensure that the necessary reactive power is fed into the grid at the grid-connection point.
Every inverter in the group compensates for the impedance influences of the cables and the transformer.
Figure 7: PV farm with Integrated Plant Control
Advantages of Integrated Plant Control
• Economical: no additional costs for central farm control gear, measured value recording at the grid-connection point,
fast data transmission, and installation and commissioning
• Grid friendly: adherence to the characteristics desired by the grid operator even in the presence of very rapid
changes in grid voltage
• Simple and easy to understand: simplifies system design and maintenance. Inverter parameterization is calculated
with the Sunny Design software.
• Secure: redundancy through individual integration and one-time parameterization of each inverter
• Flexible: even small PV systems with two or more inverters can optimize their grid characteristics at low cost.
Existing PV systems can be retrofitted via a software update.
Functionality of Integrated Plant Control
Despite the utmost care in the production of the function Integrated Plant Control, SMA Solar Technology AG does
not provide any statutory warranty for the functionality of Integrated Plant Control.
