Kaco blueplanet 100 NX3 - Other Grid-Supporting Functions that Are Effective in the Case of Active Power

Country-
spec. Set-
tings
Men
u
level
Display/
Setting
Action in this menu/meaning
Minimum support time
1000 – 15000 [ms] /
5000 [ms] 10
If due to a voltage jump in accordance with formula (1) and the con-
figured dead band is activated, the dynamic grid support is deactivated
via fast feeding of residual current after the minimum support time
elapses.
IL_L, IL-MV
and UD.
Deactivation delay
0 [ms] / 0 – 500
[ms] IL_LV / UD /
500 [ms] IL-MV / 1
Deactivates the dynamic power support after the desired delay as soon
as the voltage returns to the normal operating range. This parameter is
only available for the country settings IL_LV, IL-MV and UD.
10.4 Other grid-supporting functions that are effective in the case of active power
10.4.1 Permanent power gradient limitation
The maximum active and apparent power to be installed for a generation plant is agreed between the grid operator and
plant operator. The device capacity of a plant can be set to the exact agreed value using the S
lim
and P
lim
settings. To en-
sure 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 insist that the agreed reactive power be supplied from every operating point of the plant
without a reduction in the actual active power. Because KACO devices have the full P-Q operating range, a reduction in
the active power is, however, 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 re-
serve and ensure that the agreed reactive power can be delivered from any active power operating point. The graphic
[See figure 81 [}Page90] shows the appropriate P-Q operating range with a required example active power of 48% of
the maximum apparent power of the plant or 43% of the maximum active power of the plant.
Fig.81: 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 Parameter im SunSpec Model 123:
Maximum apparent power
S
lim
=100000 VA
„WMaxLimPct” = 50% P
lim
(ca. 40000 W)
„WMaxLimPct_RvrtTms” = 60s
“WMaxLimPct_RmpTms” = 2s
“WMaxLim_Ena” = 1
Maximum active power P
lim
= 80%
(ca. 80000 W)
AC fallback active power Pfb = 75% P
lim
(ca. 60000 W)
PT1 Settling time = 1s
Tab.11: Sample parameters for power limitation
If the ramp time "WMaxLimPct_RvrtTms" in the SunSpec model is specified as 0 s, then the internal output gradient is
used. Otherwise, the set value will be used.
Irrespective of the communication protocol used, the settling time "WMaxLim_Ena" is used in order to transfer the new
power value. Otherwise, the internally configured value will be used.
The additional ramp time "WMaxLimPct_RmpTms" specifies the jump time from a power value to the new power value.
The following formulae are used to calculate the gradient S
lim/min
:
10 | Specifications Manual
KACO blueplanet 100 NX3 KACO blueplanet 125 NX3Page
90
EN