ABB REG670 - Page 576

Signal Explanation
reacSec Transformer reactance in primary ohms referred to the LV side
relativePosition The transformer's actual tap position
voltage Setpoint The transformer's set voltage ( USet ) for automatic control
Manual configuration of VCTR GOOSE data set is required. Note that
both data value attributes and quality attributes have to be mapped.
The following data objects must be configured:
• BusV
• LodAIm
• LodARe
• PosRel
• SetV
• VCTRStatus
• X2
The transformers controlled in parallel with the circulating current method or the
master-follower method must be assigned unique identities. These identities are
entered as a setting in each TR8ATCC, and they are predefined as T1, T2, T3,..., T8
(transformers 1 to 8). In figure 291 there are three transformers with the parameter
TrfId set to T1, T2 and T3, respectively.
For parallel control with the circulating current method or the master-follower method
alternatively, the same type of data set as described above, must be exchanged
between two TR8ATCC. To achieve this, each TR8ATCC is transmitting its own data
set on the output ATCCOUT as previously mentioned. To receive data from the other
transformers in the parallel group, the output ATCCOUT from each transformer must
be connected (via GOOSE or internally in the application configuration) to the inputs
HORIZx (x = identifier for the other transformers in the parallel group) on TR8ATCC
function block. Apart from this, there is also a setting in each TR8ATCC =/,..., =/
T1RXOP=Off/On,..., T8RXOP=Off/ On. This setting determines from which of the
other transformer individuals that data shall be received. Settings in the three
TR8ATCC blocks for the transformers in figure
291, would then be according to the
table 58:
Table 58: Setting of TxRXOP
TrfId=T1
T1RXOP=
Off
T2RXOP=
On
T3RXOP=
On
T4RXOP=
Off
T5RXOP=
Off
T6RXOP=
Off
T7RXOP=
Off
T8RXOP=
Off
TrfId=T2 T1RXOP=
On
T2RXOP=
Off
T3RXOP=
On
T4RXOP=
Off
T5RXOP=
Off
T6RXOP=
Off
T7RXOP=
Off
T8RXOP=
Off
TrfId=T3 T1RXOP=
On
T2RXOP=
On
T3RXOP=
Off
T4RXOP=
Off
T5RXOP=
Off
T6RXOP=
Off
T7RXOP=
Off
T8RXOP=
Off
Section 15 1MRK 502 071-UEN -
Control
570 Generator protection REG670 2.2 IEC and Injection equipment REX060, REX061, REX062
Application manual