Country-
spec. Set-
tings
Men
u
level
Display/
Setting
Action in this menu/meaning
P(f) deactivation gradi-
ent
1 – 65,534 [% S
lim
/
min] / 10 [% S
lim
/
min] / 1
If the available power is above the actual output at the time of deactiva-
tion, the power increase back to the maximum power is limited. The
limitation is implemented by an absolute power limitation that in-
creases with a continuous gradient up to the maximum power. The ac-
tual power of the inverter may vary freely below this limit due to a pos-
sible fluctuation in the available power or the target value, but at no
time increases above the absolute power limit.
10.3
FRT
Dynamic grid support (Fault Ride Through)
A generation 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 limits 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. 66:
Immunity to interference characteristic curve relative to the nominal voltage (p.u.) of the blueplanet 125.0TL3
The inverters can ride through voltage swells provided the voltage level does not remain above the continuous operation
voltage range for longer than 100 s and does not increase beyond the short-term max. operating voltage range (up to
100s). The values specific to each inverter can be found here.
The interface protection (voltage,frequencey, ant-islanding) integrated in the inverter is configurable in a range allowing
the behaviour above. However, if the interface protection setting is limiting the voltage time characteristic, the interface
protection will trip and interrupt the ride through as configured.
Manual
Specifications | 10
KACO blueplanet 100 TL3
Page 83
EN
