Dyn grid U sig_src Alpha
p5504[0]
r3468[0]
x²
+
Dyn grid U sig_src Beta
+
p5504[1]
x²
r3468[1]
Transformat_angle
r0094
Line voltage change for fast
negative sequence calculation
1
2
DO: A_INF, R_INF
Dynamic grid support (r0108.7 = 1) - Characteristic
p5507[3] (4.00 [ms])
|U
|
Line
Line voltage absolute value smoothed
r5512[1]
[7998.1]
[7998.6]
Grid support mode
U
U
α,max
α,Ampl
max
U
U
β,max
β,Ampl
mean
Dyn grid U ampl Alpha
Smoothing time alpha/beta
p5507[2] (20.00 [ms])
r5511[0]
Dyn grid U ampl Beta
r5511[1]
U
posseq_active
Symmetrical
U
negseq_active
components
U
taking apart
negseq_reactive
p5507[3]
Positive phase-sequence system active component
Smoothing time
r5513[0]
instantaneous value
Positive phase-sequence system reactive component
p5509[6]
r5513[1]
Negative phase-sequence system active component
r5513[2]
Negative phase-sequence system reactive component
r5513[3]
3
4
Line voltage alpha/beta amplitudes
p5500.1
Line voltage characteristic absolute value input
r5512[0]
F
Grid support
negative phase-
in the event of
sequence
asymmetry
system calculation
p5500.2
p5500.3
1
0
0
0
1
1
V_connect
p0210
Reference
voltage
scaling
p5509[4]
Û
R
[7999.6]
Û
T
5
fp_7996_01_eng.vsd
09.11.18 V05.02.03
Characteristic for the dynamic grid support
(limited)
Ireact
[%]
p5506[1]
p5509[3]
100 %
p5506[0]
–
p5505[3] p5505[2]
+
p5505[0] p5505[1]
p5506[2]
p5509[3]
p5506[3]
Characteristic for the dynamic grid support
(unlimited)
Ireact
[%]
p5506[1]
p5500.5
p5509[3]
p5506[0]
0
p5505[3] p5505[2]
1
p5505[0] p5505[1]
p5506[2]
p5509[3]
p5506[3]
6
7
Function diagram
SINAMICS S120
p0115[0]
Δ
U
[%]
Δ
U
[%]
8
- 7996 -