Kaco blueplanet 87.0 TL3 Manual page 74

Fig. 83: cos φ / (P/Pn) standard characteristic curve with 3 nodes
Q(U)
In Q(U) 10 nodes mode, the set value of the reactive power is calculated continuously as a function of the grid voltage.
This function ensures that grid support is provided by reactive power as soon as the voltage actually deviates from the
target voltage. In this case, a characteristic curve is specified which can be used to configure up to 10 nodes, value pairs
for voltage and reactive power. Other parameters allow to limit functionality and to limit activation to certain power
levels as well as parametrize the transient response.
The positive sequence voltage is used to calculate the reactive power target value for three-phase units.
Q [%PN]
60
1) 43,6 | 207
40
20
2) 0 | 212 3) 0 | 230
0
20
40
60
0 207 230
Q(U) standard characteristic
Fig. 84: Q(U) standard characteristic curve with 5 nodes
10.1.4 Parameters for reactive power control
Country- Men Display/
spec. Set- u Setting
tings level
cos-phi const.
1 – 0.3
Over-excited | un-
der-excited
Q constant
0 – 100 [% S
Under-excited |
over-excited
cos-phi(P/Plim)
Settling time
200 – 30000 [ms]
Lock-in voltage
23V – 287V
Page 74
4) 0 | 248
5) 43,6 | 253
U[V]
253
Action in this menu/meaning
Specified displacement factor
Reactive power mode Under-excited relates to inductive load, over-ex-
cited relates to capacitive load.
Specification as a % of the maximum power
]
max
Reactive power mode Under-excited relates to inductive load, over-ex-
cited relates to capacitive load.
Determines the dynamic behaviour in the event of a change in the cos φ
set value. With a change of the active power or the lock-in and lock out
voltage, the cos φ is changed according to a PT-1 characteristic curve
with a settling time of 5 Tau.
The control is activated above this voltage.
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