Solare Datensysteme Solar-Log - Manual (Page 139)

139
Special functions
23�2�9 Adjustable Reduction with the Calculation of Self-Consumption
This function allows the maximum amount of grid feed-in power to be configured. The reduction level
in regard to the amount of connected generator power can be freely defined as a percentage (X%). The
amount of self-consumption is taken into account for this calculation. The Solar-Log™ only regulates the
inverters when the amount of feed-in power for the grid has reached the limit. If there is enough self-con-
sumption, the inverters continue to operate without any reductions.
Procedure:
•
Select Adjustable reduction with the calculation of self-consumption
•
Enter the percentage for the adjustable reduction.
•
Select the interface of the inverter that is to be reduced.
•
SAVE settings.
Note
The Solar-Log™ needs to be linked to a consumption meter to implement this function.
Please note the instructions in chapter”12.5 External power meter”.
23�3 Reactive Power
The following modes are available from the Special Functions | Feed-in Management | Reactive power
menu:
•
Deactivated
•
fixed value cos (Phi) shift factor
•
fixed reactive power in Var
•
variable cos (Phi) shift factor over characteristic curve P/Pn
•
variable reactive power over characteristic curve Q(U) (only Solar-Log 2000 PM+ with Utility Me-
ter)
•
Remote controlled fixed value cos (Phi) shift factor(only Solar-Log™ PM+)
Note
The active power reduction mode that needs to be implemented for a particular PV plant
is determined by the national laws and guidelines.
The planner and/or installer of your plant or the respective grid operator can provide
you with information regarding the method of reactive power control.
Note
The feed-in management function is not available for all supported inverters. Prior to
installation please check whether PM+ is supported by the inverters used.
Additional information as well as our inverter database can be found under www.so-
lar-log.com/pm+ .