GE DR60, Technical Manual

Page: 39 / 124

DR60
39 DR60-TM-EN- 2A
instrument transformer ratio calculation; activation of: trend measurement calculation,
PMU calculation and impedance fault location.
The following configurations are available:
Current and Voltage circuits:
▪
Nominal Frequency: Selects the nominal frequency of the system between 50
Hz and 60 Hz
▪
Add a new circuit or remove the selected circuit. Selecting a circuit and
pressing delete will also remove the circuit.
▪
Description: Enters a description for the circuit. Up to 256 of any characters is
allowed.
▪
Phase A, Phase B, Phase C, Phase N: Associate each phase of the circuit with its
respective physical input
▪
Nominal Value: Configures the nominal value of the primary of the instrument
transformers. This value is used for transformer ratio calculation and
thresholds/triggers.
▪
Measurement: Shows all the logical nodes associated with the respective
circuit and by clicking the sign the following window will open.
o
This window allows the following configuration:
▪
Trend calculation activation
▪
PMU Class M or P activation. The DR60 supports up to 4
PMUs, each class will count as 1 PMU even if they are from
the same circuit. When a PMU is activated a logical node
associated to it and dataset is automatically created with all
the synchrophasor, frequency and rate of change of
frequency of the respective circuit.
▪
Impedance Fault Locator calculation. The line parameters
are configured in the advanced settings right on the right
side of the window. The fault location is treated according
to the IEC 61850 logical node for fault location: RFLO. The
fault location can be sent via MMS of DNP3 by selecting the
data attribute
RFLOxFltDiskm.mag.f within the MX
functional constraint.
▪
Advanced: Allows the following configuration.
▪
Name: Enter name tags for each analog input. Maximum characters: 10.
Possible characters: a-z, A-Z, a-9, _.