22 Program features
Settings
188.16 External trip
Reactive power control
The inverter is capable of generating a selectable amount of reactive power to the grid
(positive = capacitive, negative = inductive). A reference value for the reactive power can
be given through the control unit or fieldbus interface. The inverter also supports reactive
power generation according to predefined curves such as Q(U) and Q(P).
A reference type for the reactive power can be selected from a number of different
formats, see parameter 124.06 Q power ref type. The actual reactive reference value for
the selected type must be written to the parameter 124.01 User Qref.
When parameter 124.06 Q power ref type is set to Q(x) regulation curve, parameter
124.30 Q(x) curve is used to select the curve type. Examples of different curve types are
shown below. Lock-in and lock-out conditions define when the selected curve is active.
The curve is defined with six points that map the input signal to the output signal.
Reactive power control curve activates when lock-in conditions are fulfilled and
deactivates when lock-out conditions are fulfilled. Lock-in condition can be set so that the
curves are always active (set to zero (power>0)).
Settings
124.01 User Qref
124.06 Q power ref type
124.30 Q(x) curve
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