Phase And Residual Voltage Preprocessing Utvtr; Identification; Function Block; Functionality - ABB RELION REX640 Technical Manual

1MRS759142 C
3.17.3
3.17.3.1
3.17.3.2
3.17.3.3
REX640
Technical Manual

Phase and residual voltage preprocessing UTVTR

Identification

Function description
Phase and residual voltage
preprocessing

Function block

GUID-615F9CAA-66C6-4906-A438-2E0CA3C31228 V2 EN
Figure 72: Function block

Functionality

The phase and residual voltage preprocessing function UTVTR is used for setting up
the three phase voltage measurement channels and residual voltage measurement. The
input channels for UTVTR are either physical hardware or IEC 61850-9-2 sampled
value channels.
The output channel U3P of UTVTR can be connected to different applications which
require phase voltage, positive and negative sequence.
Outputs URES_MEAS and URES_CLC can be connected to different applications
which require measured residual voltage or calculated residual voltage (from phase
voltages), respectively.
If only two phase-to-earth voltages are available, then the third phase-
to-earth voltage can be calculated without URES input connected
(assumed to be zero in that case). Positive- and negative-sequence
components are also calculated using these voltages. The accuracy of
the calculated values is affected if the actual residual voltage is not
zero.
IEC 61850 IEC 60617
identification identification
UTVTR UTVTR
Section 3
Basic functions
ANSI/IEEE C37.2
device number
UTVTR
187