Kaco blueplanet 87.0 TL3 Manual page 79

P(U) control reduces the active power that is fed in as a function of the grid voltage using a prescribed characteristic curve
as a basis. P(U) control is implemented as an absolute power 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 increases above the abso-
lute power limit.
[See figure 88] [} Page 79] and [See figure 89] [} Page 79] are two examples of configuration. In figure 1 without hys-
teresis, the function is activated as soon as the voltage exceeds the configured voltage of data point 1 (dp1). The power
limit follows the characteristic curve, a straight line between dp1 and dp2. The function is deactivated as soon as the
voltage falls below dp1. In [See figure 89] [} Page 79], the function is activated as soon as the voltage exceeds the con-
figured voltage of dp2. In this case, dp1 does not result in activation of the function because the power limit remains at
100%. The power limit follows the characteristic curve, a straight line between dp2 and dp3. However, because hysteresis
is activated, the power limit is not increased when the voltage drops. The function is deactivated as soon as the voltage
falls below dp1.
P / Pref
dp 1
dp 2
Fig. 88: Example characteristic curve without hysteresis
10.2.2.1 Parameters for P(U)
Country- Men Display/
spec. Set- u Setting
tings level
P(U) operation mode
1 2 3 4 4
Off | On
Reference power
Actual power |
Nominal power
Evaluated voltage
4
1 2 3 4
Maximum phase
voltage | Positive
phase sequence
voltage
Hysteresis mode
Off | On
Deactivation gradient
0 – 65534 [% / min]
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
P / Pref
dp 1
Voltage
Fig. 89: Example characteristic curve with hysteresis and a
deactivation threshold below the activation threshold
Action in this menu/meaning
F Activate the control process.
Off: Deactivates dynamic grid support using dynamic reactive current.
Dynamic grid support remains active on account of immunity to inter-
ference.
Specifies the power reference for the characteristic curve. 100 % here
corresponds to the nominal power or the actual power at the time the
function was activated, the time when the voltage passes the con-
figured node.
F Select the voltage to be rated.
Specifies which voltage is evaluated in a three-phase system.
Off: In non-hysteresis mode, the active power is increased immediately
with dropping voltage.
On: In hysteresis mode, the power is not increased with dropping
voltage. .
If the available power is above the actual output at the time of deactiva-
tion, the power increase back to the maximum power is limited. The
limitation is implemented by an absolute power limitation that in-
creases with a continuous gradient up to the maximum power. The ac-
tual power of the inverter may vary freely below this limit due to a pos-
sible fluctuation in the available power or the target value, but at no
time increases above the absolute power limit.
dp 2
dp 3
Voltage
Page 79