Setting Guidelines; Tr1Atcc Or Tr8Atcc General Settings - ABB Relion REC670 Applications Manual

Section 13
Control
The NoOfOperations counter simply counts the total number of operations (incremental
counter).
Both counters are stored in a non-volatile memory as well as, the times and dates of their last
reset. These dates are stored automatically when the command to reset the counter is issued.
It is therefore necessary to check that the IED internal time is correct before these counters
are reset. The counter value can be reset on the local HMI under Main menu/Reset/Reset
counters/TransformerTapControl(YLTC,84)/TCMYLTC:1 or TCLYLTC:1/Reset Counter and
ResetCLCounter
Both counters and their last reset dates are shown on the local HMI as service values under
Main menu/Test/Function status/Control/TransformerTapControl(YLTC,84)/TCMYLTC:x/
TCLYLTC:x/CLCNT_VALandMain menu/Test/Function status/Control/
TransformerTapControl (YLTC,84)/TCMYLTC:x/TCLYLTC:x/CNT_VAL
13.5.3

Setting guidelines

13.5.3.1

TR1ATCC or TR8ATCC general settings

GlobalBaseSel1 : Used to select a GBASVAL function for reference of base values for winding 1
(HV).
GlobalBaseSel2 : Used to select a GBASVAL function for reference of base values for winding 2
(LV).
TrfId : The transformer identity is used to identify transformer individuals in a parallel group.
Thus, transformers that can be part of the same parallel group must have unique identities.
Moreover, all transformers that communicate over the same horizontal communication
(GOOSE) must have unique identities.
Xr2 : The reactance of the transformer in primary ohms referred to the LV side.
tAutoMSF : Time delay set in a follower for execution of a raise or lower command given from a
master. This feature can be used when a parallel group is controlled in the master-follower
mode, follow tap, and it is individually set for each follower, which means that different time
delays can be used in the different followers in order to avoid simultaneous tapping if this is
wanted. It shall be observed that it is not applicable in the follow command mode.
OperationAdapt : This setting enables or disables adapt mode for parallel control with the
circulating current method or the master-follower method.
MFMode : Selection of Follow Command or Follow Tap in the master-follower mode.
CircCurrBk : Selection of action to be taken in case the circulating current exceeds
CircCurrLimit.
CmdErrBk : Selection of action to be taken in case the feedback from the tap changer has
resulted in command error.
OCBk : Selection of action to be taken in case any of the three phase currents on the HV-side
has exceeded
MFPosDiffBk : Selection of action to be taken in case the tap difference between a follower and
the master is greater than
324
If the Follow Tap mode has been selected, then the
higher value than the set value of the
functions.
Iblock .
MFPosDiffLim .
tAutoMSF must be set to a
tStable timer in TCMYLTC/TCLYLTC
1MRK 511 358-UEN A
SEMOD171503-1 v1
SEMOD171501-4 v5
Application manual