Solar-Log 2000 - Fig.: Q(U) Control Function Diagram

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Configuration Menu
Fig.: Q(U) control function diagram
Type of characteristic curve section
Using this menu item a characteristic curve specified by the grid operator can be stored. In principle a dis-
tinction is made here between a 2 point and a 4 point characteristic curve.
2-point characteristic curve
By selecting “2-point characteristic curve” it is possible to define a characteristic curve using two points.
Procedure
•
Select Variable reactive power via the characteristic curve Q(U) as the type.
•
Activate the interface assignments to control.
•
Select 2-point characteristic curve.
•
Define the characteristic curve points A and B based on the boxes U/Uc, Q/SAmax and put a
check in front of inductive/under-excited.
•
SAVE the settings.
The characteristic curve displayed changes according to the values entered.
4-point characteristic curve
By selecting “4-point characteristic curve” it is possible to define a characteristic curve using four points.
Procedure:
•
Select variable reactive power via the characteristic curve Q(U) as the type.
•
Activate the interface assignments to control.
•
Select 4-point characteristic curve.
•
Define the characteristic curve points A, B, C and D based on the boxes U/Uc, Q/SAmax and put a
check in front of inductive/under-excited.
•
SAVE the settings.
The characteristic curve displayed changes according to the values entered.