Kaco blueplanet gridsave 92.0 TL3-S Manual page 65

Manual
P [p.u.]
1,2
feed-in
1
0,8
0,6
0,4
0,2
0
1 0,6
0,0
underexcited
0,2
0,4
0,6
0,8
1
charge
1,2
Fig. 48: P-Q operating range for bp gridsave 110 TL3-S
P [p.u.]
1,2
feed-in
1
0,8
0,6
0,4
0,2
0
1 0,6
0,0
underexcited
0,2
0,4
0,6
0,8
1
charge
1,2
Fig. 50: P-Q operating range for bp gridsave 137 TL3-S
10.1.2 Dynamics and accuracy
In all control methods the specified target value at the inverter's connection terminals is adjusted using a stationary devi-
ation of the reactive power of maximum 2% S
power.
If the power factor cos ϕ is specified in the control method, then the deviation relates to the reactive power value
brought about by the current power level.
The transient response of the control methods is determined by a PT-1 filter. In this case, the settling time corresponds to
5 Tau, or in other words, achieving approx. 99% of the final value for a PT-1 filter. Subject to the control method selected,
there are also other parameters that determine dynamic behaviour.
10.1.3 Reactive power functions
The following functions for controlling the reactive power are implemented in the devices listed above:
– cos ϕ constant
– Q constant
– cos ϕ (P)
– Q(P) 10 nodes
– Q(U) 10 nodes
NOTE: Reactive power is prioritised in the basic setting in all methods, but this can also be deactivated accordingly. The
priority can be selected when using the Q const. and the Q(U) mode. The maximum possible active power that can be
fed in is reduced in line with the P-Q operating range when the maximum grid power is reached.
blueplanet gridsave 92.0 TL3-S blueplanet gridsave 110 TL3-S blueplanet gridsave 137
TL3-S
U 270 /480V
N
above U
N
above U
at 0,95 U
N
N
at 0,9 U
at 0,9 U
N
N
at 0,8 U
at 0,85 U
N
N
0,6 1
Q [ P.u]
overexcited
U 600V
N
above U
N
above U
at 0,95 U
N
N
at 0,9 U
at 0,9 U
N
N
at 0,8 U
at 0,85 U
N
N
0,6 1
Q [ P.u]
overexcited
. This maximum deviation always relates to the specified value as reactive
N
Specifications | 10
S [p.u. S ]
nom
1,2
1
0,8
O
0,6
V Under voltage
Nominal capability
R
0,4
T
0,2
0
580 540 500 460 420
Fig. 49: Apparent power subject to the grid voltage bp grid-
save 110 TL3-S
S [p.u. S ]
nom
1,2
1
0,8
O
0,6
V
Nominal capability
R
0,4
T
0,2
0
760 720 680 640 600
Fig. 51: Apparent power subject to the grid voltage bp grid-
save 137 TL3-S
derating U
V
R
T
380 340 300 U [V]
U
Under voltage
V
derating
R
T
560 520 480
U [V]
Page 65