[ausgabe-der-frequenzstellbefehle-250403-oz, 1, en_GB]
Figure 2-20
Output of the frequency adjustment commands
If the generator is in the synchronous operating range (“stationery synchronous vector”), only short-term
pulses (“Kick impulses”) are then output, adjusting the frequency of the fixed frequency value by (–0.10 to
+0,10 Hz) under parameter 6188 Δf KICK.
If unsettled frequency conditions prevail which cause excessive adjustments, it is of advantage to somewhat
average the frequency measured value. This is possible via parameter 6186 SMOOTHING f. This setting can
only be changed with DIGSI.
Enabling Logic
In order that an output of setpoints can be performed, the following conditions of the voltages U1 and U2 and
their frequencies have to be maintained:
Voltages
1 V to 200 V
Frequencies 0.5·f
N
to 1.5·f
N
with f
N
= 50 Hz, 60 Hz or 16.7 Hz
In addition balancing commands are possible only after either synchronization was started or the binary input
Power System
was activated (see logic diagram Figure 2-21). Blocking of balancing commands is possible at
any time using a binary input. Balancing commands are interrupted if the synchronous operating range is
recognized, meaning Δf < Parameter 6141 F SYNCHRON. In this range only kick impulses are admissible. As
long as the pause time after an adjustment pulse is current or as soon as a closure command is issued, likewise
no adjustment pulses are admissible. Balancing commands are permitted in the synchronous operating range
only if the time lies until the next possible connection over the described period with the parameter 6189 T
SW-ON MIN.
Functions
2.2 Paralleling Functions
56 SIPROTEC 4, 7VE61 and 7VE63, Manual
C53000-G1176-C163-3, Edition 10.2017
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