Within the range of very small frequency deviations, actuator pulses are output with the minimum pulse time
set under parameter 6171 T U PULS MIN, so long no kick impulse is displayed. Figure 2-24 shows the oper-
ating range of the actuator and kick commands. Figure 2-24 also contains the parameter 6185 Δf SET
POINT. This forms the target value for deriving the frequency balancing pulse. I.e. the generator speed is
brought to this setpoint.
[ve6-arbeitsbereiche-stellbefehle-kickimpulse-040303-oz, 1, en_GB]
Figure 2-24 Operating ranges balancing commands/kick impulses
The balancing commands are output as binary data only through the corresponding indications, directly via
the field bus (Profibus DP). Note that the minimum time for an adjustment pulse cannot be shorter than the
cycle time of the Profibus.
Interaction with Control Functionality
The paralleling devices 7VE61 and 7VE63 are equipped with the same control function as all SIPROTEC 4
devices. For control tasks the 7VE63 is particularly suitable since it avails of numerous binary inputs and
outputs, a graphic display for switch diagrams and the required key switches (local and remote control or
interlocked and non interlocked operation). The synchrocheck function also operates with the device control.
The corresponding interconnection is established via parameter 6102 SyncSD. If the required synchronization
device is here entered, e.g. Q0, then the synchronization functional group works in conjunction with the
internal control.
If a CLOSE command is issued, the control accounts for the fact that the switchgear component requires
synchronization. The control sends a measurement request (
Sy1 Ctrl
) to the synchrocheck function which
is then started. Having completed the check, the synchrocheck function issues the enabling indication (
Sync
CloseRel 1
) to which the control responds by ending the switching operation positively or negatively (see
Figure 2-25).
[zusammenwirken-steuerung-synchronisierfunktion-260602-kn, 1, en_GB]
Figure 2-25 Interaction of control and synchrocheck
2.2.1.13
Functions
2.2 Paralleling Functions
SIPROTEC 4, 7VE61 and 7VE63, Manual 59
C53000-G1176-C163-3, Edition 10.2017
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