[ve6-effektivwertschrieb-synchron-210503-kn, 1, en_GB]
Figure 3-27
Instantaneous fault record of a test operation with synchronization attempt for testing the
balancing
Synchronous Systems
The parallel switching device is started and the creation of close command is checked. The operational meas-
ured values provide also additional information. The synchronous conditions must be fulfilled within this time
6146 T SYNC-DELAY. If it a change between the asynchronous and the synchronous conditions is observed,
the threshold 6141 F SYNCHRON is slightly increased. The behaviour is checkable with the fault record
accordingly. The effective value record can be used via the effective enable time (approx. 10 s). The actual
r.m.s values can be read at first switching from the measured value track.
Synchrocheck
If this function is used in context with the manual synchronization function, the proper enabling has to be
checked. The execution of commands for the circuit breaker is interrupted in this attempt via disconnection.
The generator is then synchronized manually and the proper enabling is checked with the fault record func-
tion. As described in the Description of the synchronization function (Section 2.2.1.7 Synchrocheck), the
manual ON command issues a measurement request. This initiates the release of the internal logic. The enve-
lope curve of the differential voltage can be seen in the instantaneous values record according to Figure 3-28.
The coming edge of the binary track
>Sync. MeasOnly
shows the operating manual ON. The time differ-
ence for the synchronous instance shows the quality of the manual close mode. If the measured values during
measurement request are in the set limits, the synchrocheck function issues the release. This is visible in the
binary track
Sync CloseRel 1
.
Mounting and Commissioning
3.3 Commissioning
186 SIPROTEC 4, 7VE61 and 7VE63, Manual
C53000-G1176-C163-3, Edition 10.2017
To Next Page
Loading...
Need help?
General
