Kaco blueplanet 87.0 TL3 Manual page 85

On account of the definition of a voltage jump in pre-norm EN50549-2 and in VDE-AR-N 4120 and VDE-AR-N 4110, it is
typically the case that another voltage jump is detected when the incident is at an end, when the fault is rectified and
when the voltage returns to a normal state. The result of this is that in an active operation mode a dynamic grid support
using a fast feeding of residual current remains active even after the incident has passed and that reactive current is fed
in according to the formulae (2) and (3). Dynamic grid support using fast feeding of residual current is then deactivated
after a configured minimum support time, usually 5 s.
I I
b
1
Fig. 100: Formula no. 4
10.3.3 Extract from FRT menu
Country- Men Display/
spec. Set- u Setting
tings level
FRT (Fault Ride
4
1 2 3 4
Through)
Operation mode –
On | Off
Setting | Manual |Pre-
defined zero current
Priority – Reactive cur-
rent limitation | Active
current priority
Zero current under-
voltage threshold
Zero current over-
voltage threshold
0 – 184 V / 253 – 340
V
Reference voltage
U< - U>
Constant K negative se-
quence dip
Constant k negative se-
quence swell
k 0 – 10
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
Action in this menu/meaning
NOTE: The device supports dynamic grid stabilization (Fault Ride-
Through).
Setting: Manual
All parameters can be configured independently.
Setting: Predefined zero current
Dynamic grid support active on account of immunity to interference and
zero current feed-in. During a voltage incident, the current in the in-
verter is reduced to zero.
All parameters are pre-configured, only the activation threshold for zero
current has to be configured.
Priority: Reactive current priority
Dynamic grid support active on account of immunity to interference and
fast feeding of residual current. The inverter feeds additional reactive
current according to the formulae (2) and (4).
Priority: Effective current priority
Dynamic grid support active on account of immunity to interference and
fast feeding of residual current with dynamic reactive current. The in-
verter feeds in as much active power as available. If, as a result of this,
the maximum continuous current is not achieved, the device supplies
additional reactive current according to the formulae (2) and (4) up to
the limit of continuous current.
If one or more phase/phase or phase/neutral conductor voltages move
above the configured threshold, the inverter changes to zero current
mode. The total current is regulated to virtually zero.
Nominal value of the phase/neutral conductor voltage used as a refer-
ence voltage for formula (1) and (3). Adjustable in the range from level 1
undervoltage protection to level 1 overvoltage protection.
Amplification factor for the negative sequence used in the calculation of
the reactive current using formulae (2) and (4) Can be configured inde-
pendently for drops and spikes.
2
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