Kaco blueplanet 15.0 TL3, Manual, Page: 63 / 96

Country-
spec. Set-
tings Men
u
level Display/
Setting Action in this menu/meaning
Number of nodes
2 - 5
Power
0.0 -100.0 [%]
Voltage
0.0 -126.0 [%]
Up to five nodes for voltage [V] and power [% Pref] are configurable.
The power value of the first and last value pair is also used as the max-
imum or minimum active power value that is valid across the limits of
the characteristic curve.
4 1 2 3 4
Active curve
1 - 5
F Select active curve.
NOTE: Up to 5 characteristic curves can be configured inde-
pendently and one of them can be activated for regulation
each time.
10.2.4 P(f)
Adjusting the active power P(f) in the event of overfrequency
Feed-in inverters must assist with frequency stability in the grid. If the grid frequency leaves the normal toler-
ance range (e.g. ±200 mHz), then the grid will be in a critical state. In the event of overfrequency, there is a
generation surplus, in the event of underfrequency, there is a generation deficit.
PV systems must adapt their feed-in power relative to the frequency deviation. In the event of overfrequency,
the power adjustment is determined by a maximum feed-in limit. 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 in-
creases above the absolute power limit.
Fig. 43: Equation 1
Fig. 44: Equation 2
Gleichung 1 [See figure 43 [ } Page 63] definiert die maximale Grenze mit ΔP entsprechend Gleichung 2 [See
figure 44 [
}
Page 63], P
M
die Momentanleistung zum Zeitpunkt der Aktivierung und P
ref
die Referenzleistung.
In the case of PV inverters from KACO, P
ref
is defined as P
M
, the current power at the time of activation. f is the
current frequency and f
1
is the specified activation threshold.
Fig. 45: Equation 3
Fig. 46: Equation 4
In some standards, the power adjustment is specified by a drop (s) instead of a gradient (g), as shown in equa-
tion 3 [See figure 45 [
}
Page 63]. The drop s can be transformed into a gradient g in accordance with equation
4 [See figure 46 [ } Page 63].
The frequency f remains above the activation threshold
f
1
during an overfrequency incident. Consequently, the
expression (
f
1
–
f
) is negative and ΔP corresponds to a reduction in the feed-in power.
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 connection 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.
Manual Specifications | 10
KACO blueplanet 15.0TL3 KACO blueplanet 20.0TL3
Page 63
EN