Kaco blueplanet 87.0 TL3 Manual page 87

Some grid connection rules insist that the agreed reactive power be supplied from every operating point of the plant
without a reduction in the actual active power. Considering the fact that all KACO TL3 inverters have a semi-circular P-Q
operating range, a reduction in the active power is, however, required during operation at maximum active power be-
cause an apparent power reserve is not available. By adjusting P
to establish an apparent power reserve and ensure that the agreed reactive power can be delivered from any active
power operating point. [See figure 101] [} Page 87] Displays the appropriate P-Q operating range with a required ex-
ample active power of 48% of the maximum apparent power of the plant or 43% of the maximum active power of the
plant.
Fig. 101: P-Q operating range with limited active power (Qmax=Smax≠Pmax) for PV inverters
10.4.1.1 Parameter for permanet power limitation
Country- Men Display/
spec. Set- u Setting
tings level
Power limitation
Check activation
Maximum apparent
power
1000 – S
max
Maximum active power
1 – 100 [% S
10.4.2 Soft start-up / Power rampup
A soft start-up function is available to prevent the grid from being negatively impacted by a sudden increase in feed-in
power from the inverters.
When the inverter is activated or switched on, the increase in power is restricted by the set gradient. It is possible to con-
figure whether the soft start-up should occur every time the device is switched on, only upon initial start-up each day or
only upon start-up after the device has been switched off by grid protection. Due primarily to the fact that there is the
risk that many plants could increase their power levels simultaneously after they have been switched off by grid protec-
tion, a soft start-up is usually only required for start-up after a device has been switched off by grid protection.
The soft start up is implemented by an absolute power limitation that increases with a continuous gradient up to the
maximum power. The actual power of the inverter may vary freely below this limit due to a possible fluctuation in the
available power or the target value, but at no time increases above the absolute power limit.
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
Action in this menu/meaning
Activate or disable the power limitation.
The apparent power is limited globally to the configured value in VA. As
soon as S
ues will use S
[VA]
Active power is limited globally to the configured value in % Slim or
Smax.
]
lim
, the maximum active power can be restricted in order
lim
all of the active and reactive power control val-
lim has been configured,
as 100% instead of S
lim max
.
Page 87