Country-
spec. Set-
tings
Men
u
level
Display/
Setting
Action in this menu/meaning
4
1
2
3
4
Output gradient limita-
tion increase & Output
gradient limitation de-
crease
1 - 65534 [% / min]
F
Specify the increasing and decreasing output gradient.
Specifies the dynamic response on changing the active power for power
increase and decrease. With a voltage change, the active power is
changed with the specified gradient.
Note: The gradient is overlaid with the settling time.
4
1
2
3
4
Output gradient limita-
tion increase & Output
gradient limitation de-
crease
1 - 65534 [% / min]
F
Specify the increasing and decreasing output gradient.
Specifies the dynamic response on changing the active power for power
increase and decrease. With a voltage change, the active power is
changed with the specified gradient.
Note: The gradient is overlaid with the settling time.
10.3
FRT
A storage plant’s ability to remain immune to voltage drops and voltage spikes in the supply system is a key element in es-
tablishing a reliable energy supply. Immunity to interference ensures that brief disruptions do not result in a loss of gener-
ation 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.
The KACO battery inverters blueplanet gs 50.0 TL3-S have the following characteristics with regard to dynamic grid sup-
port by way of immunity. The ability to remain on the grid is particularly relevant. The actual behaviour of the inverter is
also determined by the disconnection protection settings. This determines whether an inverter is disconnected from or
remains on the grid. The protective settings take precedence over interference immunity against drops and spikes.
10.3.1
Dynamic grid support by way of immunity to interference
Interference immunity against undervoltage
Voltage drop above the limit curve in [See figure 43] [
Page 63] 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. 43: Characteristic curve of the interference immunity against voltage drops based on the grid voltage
10.3.2
Dynamic grid support using a fast feeding of residual current
When dynamic grid support using a fast feeding of residual current is activated, then residual current is fed in in addition
to the immunity to interference properties against drops and spikes described above.
KACO blueplanet gridsave 50.0TL3-S
Page 63
EN