15
10
U [
p
.
u
.]
Time [
s
]
Capability curve
0
,
6
0
,
4
0
,
2
0
1
,
8
1
,
2
20
0
;
1
)
(
1 ;
0
)
(
3 ;
0
,
5
)
5
25
[
30
(
1 ;
0
,
1
)
(
Time [
s
] ; U [
p
.
u
.])
(
3
0
;
0
,
5
)
(
0
;
U
min
)
0
(1 ; 0)
(1 ; 0,1)
(3 ; 0,5)
Fig. 53:
Immunity to interference characteristic curve relative to the nominal voltage (p.u.) of the blueplanet 125.0TL3
Die Wechselrichter können Spannungsschwankungen durchfahren, sofern der Spannungspegel nicht länger als 100 s über
dem Dauerbetriebsspannungsbereich bleibt und nicht über den kurzfristigen maximalen Betriebsspannungsbereich (bis
100 s) hinaus ansteigt. Die für jeden Wechselrichter spezifischen Werte finden Sie hier.
Der im Wechselrichter integrierte Schnittstellenschutz (Spannung, Frequenz, Anti-Islanding) ist in einem Bereich konfiguri-
erbar, der das obige Verhalten zulässt. Wenn jedoch die Einstellung des Schnittstellenschutzes die Spannungs-Zeit-
Kennlinie begrenzt, löst der Schnittstellenschutz aus und unterbricht die Durchfahrt wie konfiguriert.
10.3.2 Dynamic grid support using a fast feeding of residual current
When dynamic grid support using a fast feeding of residual current is activated, then residual current is fed in
in addition to the immunity to interference properties against drops and spikes described above.
The inverter adapts its current feed as soon as a drop or spike incident occurs in order to bolster the grid
voltage. The support takes place in the event of voltage drop in the form of over-excited reactive current (cor-
responds to a capacitive load), in the event of voltage spike in the form of over-excited reactive current (corres-
ponds to an inductive load). In the reactive current priority mode, the effective current is reduced to the extent
necessary to comply with the limits of the maximum continuous current of the inverter.
A dip or swell is detected if either the normal operating voltage range setting is exceeded by at least one
phase-phase or phase-neutral voltage, or if a step in the positive or negative sequence component of the
voltage greater than the deadband setting occurs. The magnitude of the voltage step of the positive and negat-
ive sequence voltage equates to the difference between the pre-fault voltage and the actual voltage based on
the reference voltage. The pre-fault voltage is calculated as a 50-periods mean value.
Fig. 54:
Formula no. 1
The reactive current is adapted using a response time of <20 ms and a transient time of <60 ms after the incid-
ent has occurred. Responses to changes in the voltage during the incident or to the voltage recovery at the end
of the incident take place with the same dynamic.
The formula for calculating the dynamic reactive current that is fed for the positive or negative phase sequence
voltage is:
Fig. 55:
Formula no. 2, depending on the nominal current IN of the inverter
For the positive and negative phase sequence voltage,
Δu
equates to the difference between the pre-fault
voltage and the current voltage based on the reference voltage. The pre-fault voltage is calculated as a 1-min
mean value.
Manual
Specifications | 10
KACO blueplanet 3.0 TL3 KACO blueplanet 4.0 TL3 KACO blueplanet 5.0 TL3 KACO blueplanet 6.5 TL3 KACO
blueplanet 7.5 TL3 KACO blueplanet 8.6 TL3 KACO blueplanet 9.0 TL3 KACO blueplanet 10.0 TL3
Page 65
EN
