Freq Dep. Power Red - Fronius SnapINverter Serviceanleitung

Freq dep. Power
Frequency Dependent Power Reduction
Red
(from grid frequency dependent power reduction)
When the GFDPR function is enabled and the specified grid frequency limit value is ex-
ceeded, the effective power is reduced according to a defined gradient.
IMPORTANT! A detailed explanation of the settings can be found in the "Advanced Grid
Features" section under: GFDPR - Grid frequency-dependent power reduction P(f).
Selection options
GFDPR On/Off
Activation or deactivation of function
Selection options
Off
On DisHyst
On
Enable Limit
for setting the frequency limit value above which a power reduction takes place
Enable Limit Under F. (only on hybrid inverters)
for setting the frequency limit value above which a power increase takes place
Initial Delay
Delays the application of the P (f) control after the Enable Limit is exceeded
0 - 60 s
Derating Gradient
for setting the gradient at which the effective power is reduced
0.01 - 100%/Hz
Reference variable
Derating Gradient U.F. (only on hybrid inverters)
for setting the gradient at which the effective power is increased
0.01 - 100 %/Hz
Reference variable
Stop Frequency
for setting the frequency limit value up to which a power reduction takes place.
Stop Frequency U.F. (only on hybrid inverters)
for setting the frequency limit value up to which a power increase takes place
Change Time Constant
Time constant at which a new set value of the (respective) control is compensated for.
- Compensation after ~3x the time constant
0 - 60 s
Frequency Test Time
for setting the waiting time after which the inverter will increase the power again (once the
power has reduced such that the grid frequency is within the permitted frequency range
between Disable Limit Max. and Disable Limit Min.).
0 - 600 s
GFDPR On/Off / Enable Limit / Enable Limit Under F. / Initial
Delay / Derating Gradient / Derating Gradient U.F. / Stop Fre-
quency / Stop Frequency U.F. / Change Time Constant / Fre-
quency Test Time / Disable Limit Min. / Disable Limit Max. / Alt.
Ret. Grad Thr. / Return Gradient 1 / alt. Return Grad. 1 / Use Re-
turn Grad. 2 / Return Gradient 2 /
Off / On DisHyst / On
Function deactivated
Function activated, no hysteresis
Function activated, with hysteresis
current power at the start of power reduction
current power at the start of power reduction
75