Siemens SINAMICS S120 System Manual page 93

Parameter Value
p5486[0] e.g. 10000 V
p5487[0] e.g. INFEED.r5461[0]
p5487[1] e.g. INFEED.r5462[0]
p5490
p5492
p6420[0]
1)
p6421[0]
1)
Dynamic grid support
p5500 e.g. 88(hex)
Grid infeed
System Manual, 04/2015, A5E03347436A
7.5 Commissioning example of an infeed with dynamic grid support for a power grid
Comment
Transformer rated voltage on the primary side, infeed transformer
Enter the rated voltage at the connection point on the power grid side of the
infeed transformer.
Internally, the transformer ratio is calculated from the ratio between p0210 and
p5486[0].
Transformer primary voltage signal source, conductor voltage u12
Signal input for the measured conductor-conductor voltage u12 at the circuit
breaker (5) to convert over to the transformer secondary at the Active Line
Module.
The converted voltage value transformed into space vector coordinates is indi-
cated in r5488[0, 1].
Transformer primary voltage signal source, conductor voltage u23
Signal input for the measured conductor-conductor voltage u23 at the circuit
breaker (5) to convert over to the transformer secondary at the Active Line
Module.
The converted voltage value transformed into space vector coordinates is indi-
cated in r5488[0, 1].
Transformer leakage inductance
Use the data from the transformer data sheet – or measure using the trans-
former ID (p5480 = 13)
See also: Chapter on commissioning the grid transformer
Transformer magnetizing inductance
Use the data from the transformer data sheet – or measure using the trans-
former ID p5480 = 11)
Observe the notes about r5491 in the List Manual!
Grid transformer phase shift, infeed transformer
Enter the phase shift of the grid transformer. Vector group Dy5 => -150° (is
determined more precisely with transformer identification p5480 = 12).
For the successful transformer identification in mode p5480 = 12, the coarse
setting must be made manually (also see the following chapter on transformer
commissioning!)
Grid transformer gain adaptation, infeed transformer
(Is determined more precisely with transformer identification p5480 = 12).
For successful transformer identification in mode p5480 = 12, the coarse setting
must be made manually (also see the following chapter on transformer commis-
sioning!)
Dynamic grid support configuration.
The setting defines how the Active Line Module responds when riding through
grid voltage dips (down to 0% residual voltage).
Generally, grid codes for feeding power into power grids as well as for non-
symmetrical grid faults specify a defined support current and a sinusoidal cur-
rent waveform. In this case p5500.3 = 1 must be set.
The current control when fast voltage changes occur is improved by using dy-
namic current limits: p5500.7 = 1.
The additional setting bits (modes regarding the type of reactive and active
power support and for calculating the reactive support current) can be taken
from the List Manual.
Commissioning
93