ABB Relion REC670 Applications Manual page 320

Section 13
Control
Communication between these TR8ATCCs is made either on the GOOSE interbay
communication on the IEC 61850 protocol if TR8ATCC functions reside in different IEDs, or
alternatively configured internally in one IED if multiple instances of TR8ATCC reside in the
same IED. Complete exchange of TR8ATCC data, analog as well as binary, on GOOSE is made
cyclically every 300 ms.
TR8ATCC function block has an output ATCCOUT. This output contains two sets of signals.
One is the data set that needs to be transmitted to other TR8ATCC blocks in the same parallel
group, and the other is the data set that is transferred to the TCMYLTC or TCLYLTC function
block for the same transformer as TR8ATCC block belongs to.
There are 10 binary signals and 6 analog signals in the data set that is transmitted from one
TR8ATCC block to the other TR8ATCC blocks in the same parallel group:
Table 30: Binary signals
Signal
TimerOn
automaticCTRL
mutualBlock
disc
receiveStat
TermIsForcedMast
er
TermIsMaster
termReadyForMSF
raiseVoltageOut
lowerVoltageOut
Table 31:
Signal
voltageBusbar
ownLoadCurrim
ownLoadCurrre
reacSec
relativePosition
voltage Setpoint
314
Explanation
This signal is activated by the transformer that has started its timer and is going to tap
when the set time has expired.
Activated when the transformer is set in automatic control
Activated when the automatic control is blocked
Activated when the transformer is disconnected from the busbar
Signal used for the horizontal communication
Activated when the transformer is selected Master in the master-follower parallel
control mode
Activated for the transformer that is master in the master-follower parallel control
mode
Activated when the transformer is ready for master-follower parallel control mode
Order from the master to the followers to tap up
Order from the master to the followers to tap down
Analog signals
Explanation
Measured busbar voltage for this transformer
Measured load current imaginary part for this transformer
Measured load current real part for this transformer
Transformer reactance in primary ohms referred to the LV side
The transformer's actual tap position
The transformer's set voltage (
USet ) for automatic control
1MRK 511 358-UEN A
Application manual