Parallel Voltage Regulation - ABB Relion 670 Series Commissioning Manual

1MRK 511 403-UEN E
ul im ub im
EQUATION2084 V1 EN-US
where:
ub
il
rline
xline
For comparison with the set-point value, the modulus of U
¦ U
EQUATION2086 V2 EN-US
4. Inject voltage for U
5. Inject current equal to rated current
6. Confirm on the local HMI that service values for bus voltage and load current are equal to
injected quantities.
7. Confirm that the calculated value for load voltage, displayed on the local HMI, is equal to
that derived through hand calculations.
8. When setting
calculated value for load voltage as the regulating quantity to compare against
the voltage deadband limits
9. While injecting rated current
higher then
higher than
10. Reduce the injected voltage for U
that the calculated value for load voltage is below
issued from the IED.
11.9.4.8

Parallel voltage regulation

Master follower voltage regulation
1. For the transformers connected in the parallel group, confirm that
MF .
2. For parallel operation, it is also recommended to confirm for parallel group membership,
defined by setting
Control/TransformerVoltageControl(ATCC,90)/TR8ATCC:x/ParCtrl
The general parallel arrangement of transformers are defined by setting
Off . The following rules are applicable on the settings T1RXOP – T4RXOP .
If IED
•
•
•
Bay control REC670
Commissioning manual
= - × -
, , xline il re rline il im ,
is the complex value of the busbar voltage
is the complex value of the line current (secondary side)
is the value of the line resistance
is the value of the line reactance
2 2
¦ = (ul , re) + (ul , im)
L
equal to setting
B
OperationLDC set to On , the voltage regulation algorithm uses the
USet + |( Rline +j XLine ) · I
USet , and hence no tap change command should be issued from the IED.
TnRXOP in the local HMI under Main menu/Settings/IED Settings/
T1 and T2 are connected,
T1RXOP shall be set to On in instance 2 of TR8ATCC,
T2RXOP shall be set to On in instance 3 of TR8ATCC,
T2RXOP and T3RXOP shall be set to On in instance 1 of TR8ATCC, and so on.
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×
,
USet .
I2Base .
UDeadband and UDeadbandInner .
I2Base into the IED, inject a quantity for U
|. This will ensure that the regulating voltage U
L
slightly below USet + |( Rline +j XLine ) · I
B
USet and a tap change command is
Testing functionality by secondary injection
(Equation 33)
are according to equation 34.
L
(Equation 34)
USet and
that is slightly
B
| and confirm
L
SEMOD175185-714 v2
OperationPAR is set to
TnRXOP to On or
Section 11
is
L
SEMOD175185-716 v7
159