PV*SOL Expert 6.0 - Manual - Valentin Software

10.1.3.4 Losses through Feed-in Management
System > Technical data > Losses > Feed-in Management
On the basis of the 2012 EU amendment on maintaining grid stability in order to ensure
reactive power balance between the grid and appliances, PV system operators must
provide reactive power.
e.g.: Grid operator requires cos φ -> = The 0.9 inverter must supply 10 % more output: 90 %
for the previous active power + 10 % for the new reactive power
In addition, larger PV systems with > 30 kW must be remotely controllable by the grid
operators.
Small PV systems with < 30 kW must be limitable to 70 %.
Reactive power feed-in
Enter a displacement factor cos φ 1. between 0.8 and
With a factor < 1, the usable active power of the inverter will be less.
With a cos φ of 0.95, only 95 %
The inverter should therefore be sized 5 % larger.
This is taken into account in the System check, where only the active power is entered in
the sizing. For identification, cos φ appears after the AC nominal power with a cos φ < 1.
If the inverter is sized too small, the simulation will reveal drops in yield.
Feed-in limitation
Enter a limitation in PV output of between 60 and 100 percent.
Feed-in outputs which exceed this value with their installed PV output will be limited to
this percentage in the simulation.
-> Proceed as follows:
1. Enter a displacement factor cos φ between 0.8 and 1.
2. Select Maximum feed-in
Enter a limitation in PV output of between 60 and 100 percent.
78