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7 Commissioning
Maschinenfabrik Reinhausen GmbH 2020
83
3587317/21 EN
TAPCON
®
Note that the following prerequisites must be met for the "circulating reactive
current minimization" parallel operation method:
▪ You have to use current transformers with the same rated values for all
transformers in parallel operation.
▪ If you wish to operate in parallel operation with existing devices, you have
to activate the Retrofit TAPCON® 2xx [
rameter.
Consult the section Circulating reactive current minimization [
8.18.1.2, Page 182] for more information.
To set the circulating reactive current sensitivity, proceed as follows:
1. Select the "Circulating reactive current" parallel operation method [
2. Set circulating reactive current sensitivity to a value of 0% [
3. If necessary, activate the Retrofit TAPCON® 2xx function [
4. Adjust both transformers in independent mode to the same actual voltage
using on-load tap-changers.
5. Connect the transformers in parallel and enable the parallel control.
ð
The status display in the
Parallel operation
menu lights up blue.
ð
The two TAPCON® must be within the bandwidth.
6. Set the desired value of both TAPCON® to the voltage currently mea-
7. On one of the two transformers, raise the tap position of the on-load tap-
changer by one setting; on the second transformer, lower the tap position
of the on-load tap-changer by one setting.
ð
The two TAPCON® are still within the bandwidth.
8. Increase the circulating reactive current sensitivity in small steps until the
control deviation dU in the main screen is outside the bandwidth (depend-
ing on TAPCON® greater than or less than the bandwidth).
9. Press
to select auto mode for all TAPCON® units.
ð
All of the TAPCON® units return the on-load tap-changer units to the
original tap positions.
If an on-load tap-changer does not switch back to its original tap position,
you have to increase the circulating reactive current sensitivity.
If one of the on-load tap-changer units switches one or more tap positions
higher and the other switches the same amount lower, you need to reduce
the circulating reactive current sensitivity.
After you have set the circulating reactive current sensitivity, continue with
the function test for the circulating reactive current blocking limit described in
the next section.
Содержание TAPCON
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