Country-
spec. Set-
tings
Men
u
level
Display/
Setting
Action in this menu/meaning
4
1
2
3
4
Increasing output gra-
dient & Decreasing
output gradient
1 - 65534 [% / min]
F
Specify increasing and decreasing output gradients.
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
Increasing output gra-
dient & Decreasing
output gradient
1 - 65534 [% / min]
F
Specify increasing and decreasing output gradients.
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.
10.4.4 Other grid support functions effective on active power
Normal operation power gradient
In the case of very large plants, it may also be necessary to restrict the change in power level during normal operation. If
the set value (for increase and decrease in power level) and the solar irradiation change (for increase in power level), then
the grid feed-in power is increased or decreased in line with the configured gradient. A limitation is not possible if the so-
lar irradiation is reduced.
The function is not active for power changes defined by other grid support function such as power recovery after fault
ride through, P(f), P(U).
The maximum active and apparent power to be installed in a generating plant is agreed between the grid operator and
plant operator. The device capacity of a plant can be set to exactly match the agreed value using the Slim and P
lim
settings.
To ensure that the load on the devices in the plant is uniform, we recommend distributing the performance reduction
evenly across all devices.
Some grid connection rules require that the agreed reactive power be provided from every active power operating point
of the plant without a reduction of the actual active power. Considering the fact that the KACO TL3 inverter all operate
with a semi-circular P-Q operating range, a reduction in the active power is required during operation at maximum active
power because an apparent power reserve is not available. By adjusting P
lim
, the maximum active power can be restricted
in order to establish an apparent power reserve and to ensure that the agreed reactive power can be delivered from any
active power operating point. --- FEHLENDER LINK --- and --- FEHLENDER LINK --- show the adapted P-Q operating range
with an example reactive power requirement of 48% of the maximum apparent power of the plant or 43% of the maxi-
mum active power of the plant respectively.
Fig. 86:
P-Q operating range with limited active power (Qmax=Smax≠Pmax) for PV inverters
The power reduction parameters can be adjusted in SunSpec model DID123. During this process, you should also check
whether internal and/or external power reduction is active.
Internal power limitation
Parameters for external power limita-
tion
Parameters for power limitation
Status = active
Status = active
Parameters in SunSpec model 123:
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
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EN-US
