Kaco blueplanet gridsave 50.0TL3-S Series, Manual, Page: 60 / 83

Fig. 37: Equation 1
Fig. 38: Equation 2
Equation 1 [See figure 37] [ } Page 60] defines the maximum limit with ΔP relevant to 2 [See figure 38] [ } Page 60], P
M
the current power at the time of activation and P
ref
the configured reference power.
Fig. 39: Equation 3
Fig. 40: Equation 4
In some standards, the power adjustment is specified by a drop (s) instead of a gradient (g), as shown in equation 3 [See
figure 39] [
} Page 60]. The drop s can be transformed into a gradient g in accordance with equation 4 [See figure 40]
[ } Page 60].
The frequency f remains above the activation threshold
f
1
during an overfrequency incident. Consequently, the expres-
sion (
f
1
–
f
) is negative and ΔP corresponds to a reduction in the feed-in power or an increase in the charging capacity.
The frequency f remains below the activation threshold
f
1
during an underfrequency incident. Consequently, the expres-
sion (
f
1
–
f
) is positive and ΔP corresponds to an increase in the feed-in power or an reduction in the charging capacity.
Depending on the operating point of the inverter at the time of activation, the configured power reference and the con-
figured gradient, the inverter may switch from charging to feed-in mode in the event of underfrequency or from feed-in
to charging mode in the event of overfrequency (--- FEHLENDER LINK ---).
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.
52 , 0 51 , 5 51 , 0 50 , 5
50 , 2
100 % P
M
60 % P
M
P
ref
= P
M
P
f P
1
re
=
eff
= =P
e
50
P
,
P
M
P
2
M
Hz f
1
s
1
= =
=
= =5 5
5
50,
% s
f s 5
stop
5% 5
p
=
% %
50 , 1 Hz
Frequency [Hz]
Active Power [%P
ref
M
=%P ]
Rate limited power increase after
deactivation of response
Fig. 41: Example behaviour with hysteresis (mode 1)
49 , 8 49 , 5 49 , 0 48 , 5 48 , 0
80 % P
max
P
ref
= P
max
f
1
= 49 9, 8 Hz
s = 5 %
- 20 0% P
max
20 % P
max
47 7, 5
Frequency [Hz]
Charging mode if
applicable
generating mode
Active Power
Fig. 42: Example behaviour without hysteresis (mode 2) At
the time of activation, the inverter is in charging mode at
20% charging capacity.
KACO blueplanet gridsave 50.0TL3-S Page 60
EN