Uprating
If the mains frequency underruns the f start value ID 5094 the device calculates a power
increase in relation to the configured rate. If the mains frequency exceeds the f stop value
ID 5095 the calculation will be disabled and the active power controller regulates its
original active power setpoint. Should the active power setpoint be changed meanwhile
the mains failure power ramp will be activated.
Frequency value for up/derating:
According to the VDE-AR-N 4110 a 200ms moving average mains frequency value is used.
The frequency can be picked up under ID 236 or is usable via the AnalogManager variable
“02.90 Mains freq.200ms [Hz]”.
ID
Parameter
Setting range
[Default]
Description
5807
Up/derating based on
Rated power
[Actual power]
The reference for the active power
derating/uprating is adjustable with this
parameter.
Rated power: In the moment of up/
derating start the engine rated power is
taken and from this value the
percentage rating is calculated.
Actual power: In the moment of up/
derating start the actual power is stored
and from this value the percentage
rating is calculated.
Parameter Derating
ID
Parameter
Setting range
[Default]
Description
5781
Function
On
[Off]
The f depending derating of power can
be enabled here.
On: Active power derating is enabled.
Off: Active power derating is disabled
5782
f start value
15.00 to 85.00 Hz
[50.20 Hz]
If the mains frequency is higher than the
start value the frequency depending
derating function is enabled.
5783
f stop value
15.00 to 85.00 Hz
[50.15 Hz]
The frequency depending derating
function stops, if the mains frequency is
lower than the stop value.
5784
f dep.derating
1 to 100 %/Hz
[40 %/Hz]
Depending on the actual mains
frequency, the generator active power
decreases with the gradient value in
relation to the active power the
reference value.
5785
Hold max. derating
On
[Off]
It can be determined, whether the max.
calculated reduction value shall be hold.
In that case the last highest reduction
rate is kept until the the f-stop value is
underrun.
367
easYgen-3000XT Series
B37574
4 Configuration
4.4.4.5.5 Active Power – Frequency Function P(f)
Released