ABB Relion 670 Series Applications Manual page 330

Section 15
Control
General settings
Operation : The operation mode can be set On or Off . The setting Off disables the whole
function.
GblBaseSelBus and GblBaseSelLine
These configuration settings are used for selecting one of twelve GBASVAL functions, which
then is used as base value reference voltage, for bus and line respectively.
SelPhaseBus1 and SelPhaseBus2
Configuration parameters for selecting the measuring phase of the voltage for busbar 1 and 2
respectively, which can be a single-phase (phase-neutral), two-phase (phase-phase) or a
positive sequence voltage.
SelPhaseLine1 and SelPhaseLine2
Configuration parameters for selecting the measuring phase of the voltage for line 1 and 2
respectively, which can be a single-phase (phase-neutral), two-phase (phase-phase) or a
positive sequence voltage.
CBConfig
This configuration setting is used to define type of voltage selection. Type of voltage selection
can be selected as:
• no voltage selection,
• single circuit breaker with double bus,
• 1 1/2 circuit breaker arrangement with the breaker connected to busbar 1,
• 1 1/2 circuit breaker arrangement with the breaker connected to busbar 2,
• 1 1/2 circuit breaker arrangement with the breaker connected to line 1 and 2,
PhaseShift
This setting is used to compensate the phase shift between the measured bus voltage and line
voltage when, for instance, a power transformer is connected between the bus VT and the line
VT location.
Note that this set value is used to cause additional angle shift of the measured line voltage
phasor. The measured bus voltage phasor is always taken as is (i.e. without any additional
shifting).
Synchronizing settings
OperationSynch
The setting
service mode and the output signal depends on the input conditions.
UHighBusSynch and UHighLineSynch
The voltage level settings shall be chosen in relation to the bus/line network voltage. The
threshold voltages
where the network is expected to be synchronized. A typical value is 80% of the rated voltage.
UDiffSynch
Setting of the voltage difference between the line voltage and the bus voltage. The difference
is set depending on the network configuration and expected voltages in the two networks
running asynchronously. A normal setting is 0.10-0.15 p.u.
324
No voltage sel.
Off disables the Synchronizing function. With the setting On , the function is in the
UHighBusSynch and UHighLineSynch have to be set lower than the value
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Double bus
1MRK 511 401-UEN Rev. K
1 1/2 bus CB
1 1/2 bus alt. CB
Tie CB
Bay control REC670
Application manual