Country-
spec. Set-
tings
Men
u
level
Display/
Setting
Action in this menu/meaning
Active curve
1 - 4
Up to 4 characteristic curve can be configured independently and one of
them can be activated for regulation each time.
Reset the curve
Reset the active curve to the factory setting, depands on configured
country setting.
Number of nodes
2 – 10
Specify the number of nodes for the Q(U) characteristic curve.
1st node … 10th node
0-max Voltage in
continuous operation
Voltage of the node in volts
The voltage values of the nodes must increase continuously. For volt-
ages below the 1
st
node and voltage above the last node, the reactive
power value of the 1
st
or last node is used each time.
1 – 0.3
Reactive power of the node as a percentage of the maximum power.
Over-excited | under-
excited
Reactive power operating type- under-excited corresponds to inductive
load, over-excited corresponds to capacitive load.
10.3
FRT
Dynamic grid support (Fault Ride Through)
A generator plant’s ability to remain immune to voltage drops and voltage spikes in the supply system is a key element in
establishing a reliable energy supply. Immunity to interference ensures that brief disruptions do not result in a loss of
generation capacity in a larger range of an interconnected grid. Grid support by a fast feeding of residual current also lim-
its the spatial extent of the incident.
With its dynamic grid support by way of immunity, the device has this characteristic. The ability to remain on the grid is
particularly relevant. The protective settings also determine the device’s ability to remain on the grid or not. Protective
settings take the upper hand over the capacity of immunity to interference.
10.3.1 Dynamic grid support by way of immunity to interference
Interference immunity against undervoltage
Voltage drop above the limit curve in can be overcome without the need for shutdown from the grid. The feed-in power
remains constantly within the limits of the maximum continuous current of the inverter.
If a reduction in power occurs, the power is brought back up to the pre-fault level within 100 ms of the voltage returning.
15
10
U [
p
.
u
.]
Time [
s
]
Capability curve
0
,
6
0
,
4
0
,
2
0
1
,
8
1
,
2
20
0
;
1
)
(
1 ;
0
)
(
3 ;
0
,
5
)
5
25
[
30
(
1 ;
0
,
1
)
(
Time [
s
] ; U [
p
.
u
.])
(
3
0
;
0
,
5
)
(
0
;
U
min
)
0
(1 ; 0)
(1 ; 0,1)
(3 ; 0,5)
Fig. 74: Immunity to interference characteristic curve relative to the nominal voltage (p.u.) of the blueplanet 125.0TL3
KACO blueplanet 87.0 TL3 KACO blueplanet 92.0 TL3 KACO blueplanet 110 TL3 KACO blueplanet 125 TL3
KACO blueplanet 137 TL3 KACO blueplanet 150 TL3
Page 75
EN-US