Other Grid-Supporting Functions That Are Effective In The Case Of Active Power - Kaco blueplanet 3.0 TL3 M2 WM OD IIG0 Manual

10 | Specifications
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 op-
erator and plant operator. The device capacity of a plant can be set to the exact agreed value using the S
P settings. To ensure that the load on the devices in the plant is uniform, we recommend distributing the per-
lim
formance 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. 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 because an apparent power reserve is not available. By adjusting P
active power can be restricted in order to establish an apparent power reserve and ensure that the agreed re-
active power can be delivered from any active power operating point. The graphic [See figure 58 [} Page 68]
shows the appropriate P-Q operating range with a required example active power of 48% of the maximum ap-
parent power of the plant or 43% of the maximum active power of the plant.
Fig. 58: 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
Status = active
Maximum apparent power S
100000 VA
Maximum active power P
80% (approx. 80000 W)
Tab. 6: 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 trans-
fer 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
Page 68
Parameters for external power
limitation
Status = active
=
lim
= AC fallback active power Pfb = 75%
lim
P (approx. 60000 W)
lim
PT1 settling time = 1 s
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Manual
Parameters for power limitation
Parameters in SunSpec model 123:
"WMaxLimPct" = 50% P
W)
"WMaxLimPct_RvrtTms" = 60 s
"WMacLimPct_RmpTms" = 2 s
"WMaxLim_Ena" = 1
:
lim/min
and
lim
, the maximum
lim
(approx. 40000
lim