Solare Datensysteme Solar-Log - Manual (Page 140)

140
Special functions
Note
The configuration for reactive power is always emanated from the reference direction,
from the side of the Solar-Log™.
The power companies define the requirements from their point of view. PV plants are
usually defined in the consumption direction (with negative totals).
For more information, refer to http://en.wikipedia.org/wiki/Electric_current#Reference_
direction
Interface section
Depending on the type of Solar-Log™, the interfaces for communication with the connected inverters are
shown here. Depending on the model used, this list can also contain fewer entries.
Select the interface or interfaces that correspond to those to which the inverters that will be controlled are
connected.
23�3�1 Reactive power deactivated
When this menu item is selected, reactive power control is deactivated. After that, the controllable inter-
faces can be selected when control is via the Modbus PM or via a PM Profile.
23�3�2 Fixed value cos (Phi) shift factor
With this function it is possible to adjust the connected inverters to a fixed shift factor.
Using this matrix it is possible to specify a fixed cos (Phi) for certain periods of time. If over the course
of one day various shift factors must be adhered to, they can be configured here. If an Utility Meter with
power measurement is available, the measurements can be performed at the feeding point.
Procedure:
•
Select Fixed value cos (Phi) shift factor .
•
Activate Interfaces .
•
Enter the from (time) .
•
Enter the cos (Phi) for this time period.
•
Check the box Inductive/under-excited for cos (Phi).
•
If necessary, enter additional times and the accompanying cos (Phi).
•
If necessary, activate measuring at the feeding point.
•
SAVE settings.
If a certain cos (Phi) must be maintained for 24 hours, the time 00:00 as well as the cos (Phi) have to be
entered in the first line. The other lines must also be filled with 00:00. It is not necessary to enter the cos
(Phi).