Kaco blueplanet 87.0 TL3 Manual page 81

The frequency f remains above the activation threshold f
sion (f – f) is negative and ΔP corresponds to a reduction in the feed-in power.
1
The measurement accuracy of the frequency is greater than 10 mHz.
The specific mode of operation of the function is specified by the grid operator or the pertinent standards or the grid con-
nection guidelines. The configurability of the function makes it possible to satisfy a wide variety of standards and
guidelines. Certain configuration options are not available in some country settings because the pertinent standards or
grid connection guidelines prohibit adjustments.
Adjusting the active power P(f) in the event of underfrequency
Some grid connection guidelines also require adjustment of the active power P(f) in the event of underfrequency. Due to
the fact that PV systems are typically run at the maximum power point, there are no power reserves for increasing the
power in the event of underfrequency.
However, in the event that the system power is reduced due to market regulation, it is possible to increase the active
power up to the power level available. Because the inverter is unable to distinguish between P constant target values for
obligatory bottleneck management by the grid operator and for market regulation, this needs to be implemented in the
site-specific infrastructure of system control.
Rate limited power increase after
deactivation of response
100 % P
M
60 % P
M
50 , 2 50 , 5 51 , 0
Frequency [Hz]
Fig. 94: Example behaviour with hysteresis (mode 1)
10.2.3.1 Parameters for P(f)
Country- Men Display/
spec. Set- u Setting
tings level
P(f) operation mode
Off | Mode 1 |
Mode 2
Power reference mode
with overfrequency
Actual power |
Nominal power
Power reference mode
with underfrequency
Actual power |
Nominal power
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
P P P = P = = P P P P
re ref ef f e M M M
f f = = 5 5 = = = 50, 50 , 2 Hz
1 1 1
s s s 5 = 5 5 5% % % %
f = 50 , 1 Hz
stop p
51 , 5 52 , 0
Action in this menu/meaning
Activate or deactivate function.
Mode 1: With hysteresis activated. See figure 3.
Mode 2: Without hysteresis activated. --- FEHLENDER LINK ---
Power reference with overfrequency:
Power reference for power adjustment as in equation 6 and equation 7
for overfrequency incidents.
Power reference with underfrequency:
Power reference for power adjustment as in equation 6 and equation 7
for overfrequency incidents.
during an overfrequency incident. Consequently, the expres-
1
Rate limited power increase after
deactivation of response
100 % P
M
60 % P
M
50 , 5 51 , 0
50 , 2
Frequency [Hz]
Fig. 95: P(f) example characteristic without hysteresis Mode
2
P P P = P =P P P P
ref ref f f M M M
f f = = =5 5 50, 50 , 2 Hz
1 1
s s s s 5 = 5 5 % % 5 % % % % % %
f = deactivated
stop
51 , 5 52 , 0
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