Voltage-Control Function for Parallel Transformers
Checking the Settings of the Voltage Controller within a Group and of the GOOSE Communication
•
For the functional test of Voltage cont.2w, route the indications
Health
, Remote parallel mode,
Parallel-operation error
, and
Auto Blocking
to an LED.
•
Check this routing.
•
Route the GOOSE input indication
Cmd. with feedback
under
Voltage reg.2w → Parallel control → ParallelProxy on one display page.
The tap positions received from the other voltage controllers are shown under:
Voltage reg.2w → Parallel control → ParallelProxy
•
Switch all affected voltage controllers to the parallel mode.
[sc_ibs_tap_changer_pos, 1, en_US]
Figure 10-11 Example of a User-Defined Display Page
If the indication
Parallel-operation error
is reported, the following causes are possible:
•
Communication error
•
Parallel-mode error - inconsistent setting Parallel mode
•
Parameter Parallel-transfomer id inconsistent or identical for 2 voltage controllers
•
Master error (number of Masters in the group ≠ 1), only with the Master-Follower method
•
Measured value invalid (for example, with line compensation no current transformer assigned in the
remote voltage controller)
•
Mode error (inconsistent test mode of the voltage controllers)
You can find the reason for the indication in the operational log of the indication
Cause of par.op.
error
.
NOTE
If the indication
Auto Blocking
is reported and if the indication
Parallel Auto Blocking
is
reported in the ParallelProxy, the possible cause is that the remote voltage controller is blocked or the
Follower device is in the Manual in case of the Master-Follower method.
Checking Remote Measured Values
You can check the measured values received via GOOSE in the DIGSI-Online-Editor or on the on-site operation
panel of the device under the following path:
Main menu → Measured Values → Voltage cont.2w → Function values. → Parallel operat. → Parallel-
Proxy
10.10.1.5
Functional Tests
10.10 Commissioning Hints for Voltage Control
SIPROTEC 5, High-Voltage Bay Controller, Manual 1083
C53000-G5040-C015-9, Edition 11.2017
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