ABB REG670 Applications Manual page 576

Relion 670 series generator protection

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Setting of TxRXOP

Transformer reactance in primary ohms referred to the LV side

relativePosition

The transformer's actual tap position

voltage Setpoint

The transformer's set voltage (

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:

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

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

Generator protection REG670 2.2 IEC and Injection equipment REX060, REX061, REX062

USet ) for automatic control

there are three transformers with the parameter

1MRK 502 071-UEN -

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