10
Specifications
10.1
Reactive power control
Reactive power can be used in electrical energy supply networks to bolster the level of voltage. As such, feed-in inverters
can contribute to statistical voltage stability. Reactive power brings about a voltage drop at the inductive and capacitive
components of the equipment which can either bolster or reduce the level of voltage. If the generating plant draws in-
ductive reactive power while active power is being fed in, part of the voltage swing caused by the active power feed can
be compensated for by the supply of reactive power.
This reactive power mode and the respective control process are specified by the grid operator. If no control process has
been specified, then the system should be operated using a reactive power specification of 0%.
10.1.1
Operating power range depending on grid voltage
The device can be operated within the respective fixed voltage range provided. The maximum apparent power is stated in
the following table. In the event of undervoltage determined by the maximum continuous current subject to the grid
voltage.
Voltage - devices with U
N
220 V / 380
V; 230 V / 400 V; 240 V / 415 V
Voltage - devices with U
N:
277 V / 480
V
Maximum apparent power [p.u.]
≥ 400
≥ 480
1.04
390
468
1.04
at 380
456
1.0
at 360
432
0.95
Tab. 4:
Maximum continuous apparent power depending on grid voltage
The following figures show the reactive power-active power operating range for devices with a nominal voltage of U
N
220/380, 230/400, 240/415.
1
P [p.u.]
Q [P.u]
0,6
0,4
0,2
0
1
0,8
1,2
0,6
0,6
1
0,0
above 390V
at 380V
at 360V
underexcited
overexcited
Fig. 42:
P-Q operating range for blueplanet 50.0TL3
540
S [p.u. S
nom
]
U [V]
0,6
0,4
0,2
0
1
0,8
1,2
340
460
300
260
380
420
500
Over load capability
Nominal capability
OVRT
Under voltage
derating
UVRT
Fig. 43:
Apparent power dependence of grid voltage
1
P [p.u.]
Q [P.u]
0,6
0,4
0,2
0
1
0,8
1,2
0,6
0,6
1
0,0
above 390V
at 380V
at 360V
underexcited
overexcited
Fig. 44:
P-Q operating range for blueplanet 50.0TL3
Fig. 45:
Apparent power subject to the grid voltage for
devices with UN 277/480 V
Kaco blueplanet 29.0TL3
Page 57
EN
