Siemens SINAMICS S120 System Manual page 117

Parameter Value
p5487[3] e.g. INFEED.r5462[1]
p5571 INFEED.r5499.5
p5574[0, 1] e.g. INFEED.r5488[3, 4]
p5581[5] e.g. 1 s
p5581[6] e.g. 60 s
p5583[0] e.g.
CONTROL_UNIT.r0722.3
p5583[1] e.g.
CONTROL_UNIT.r0722.4
p5583[2] e.g.
CONTROL_UNIT.r0722.5
p5586[1] e.g. 0.5 %
p5586[2] e.g. 1 %
p5586[3] e.g. 1 %
Values are system-specific and must be taken into special consideration when adapting to the particular system configu-
1)
ration.
Grid infeed
System Manual, 04/2015, A5E03347436A
Comment
CI: Transformer primary voltage signal source - island grid transformer u23
Signal source for the measured conductor-conductor voltage at the grid discon-
nector (9) for internal conversion to the connection point of the Active Line
Module.
The converted voltage value transformed into space vector coordinates is indicat-
ed in r5488[3, 4].
BI: Grid PLL2 activation signal source
Sets the signal source to activate PLL2 for determining the frequency, phase
angle and amplitude of an external grid. The synchronization of an island grid
(p5493[0]) is realized at the output signals of PLL2 (r6311[1], r6313, r6314).
CI: Grid PLL2 voltage signal source
To synchronize to an external grid, its frequency, amplitude and phase position
must be determined using the supplementary grid PLL2. The converted voltage
measured values of the external grid must be used (in this case r5488[3, 4]) as
input signals for the PLL2.
Synchronizing circuit breaker bounce time
Setting the bounce time for the circuit breaker on the grid side of the grid trans-
former.
Maximum synchronizing time
Setting the permissible maximum time. Fault F06504 is output if grid synchroniza-
tion has not been realized when the maximum time has expired.
BI: Island grid synchronization signal sources, start
Signal source for the start command to synchronize the island grid with an exter-
nal grid.
BI: Island grid synchronization signal sources, circuit breaker feedback signal
Signal source for the feedback signal the circuit breaker between the island grid
and external grid.
BI: Island grid synchronization signal sources, reset setpoints
Signal source to reset supplementary setpoints for voltage and frequency
(r5582[0, 1]) after island grid synchronization has been completed.
At the same time as the reset command, the external cyclic supplementary set-
points must be appropriately adapted (p5406[0], p5416[0]).
Explanation: Synchronization is realized using suitable supplementary setpoints
for the grid droop, i.e. the original settings of the grid droop are no longer suitable
after the grids have been connected with one another. When resetting the sup-
plementary setpoints from the synchronizing operation, the application must sim-
ultaneously correct the old droop settings.
Island grid scaling values, synchronization grid phase angle ramp
Setting the maximum permissible frequency deviation (as a percentage of the
rated frequency p0211) for aligning the grid phase angle for island grid synchroni-
zation.
Island grid scaling values, synchronization frequency ramp
Setting the ramp speed for aligning the line frequency for island grid synchroniza-
tion (as a percentage of the rated frequency p0211 per second).
Island grid scaling values, synchronization voltage ramp
Setting the ramp speed for aligning the line voltage for island grid synchronization
(as a percentage of the rated voltage p0210 per second).
7.7 Commissioning the grid droop control
Commissioning
117