GE c60 Instruction Manual page 268

SYSTEM SETUP
channels of the source, as well as symmetrical components (0, 1, and 2) of both voltages and currents. When configuring
communication and recording features of the PMU, the user can select, from the above superset, the content to be sent
out or recorded. When one source is selected by one PMU, it cannot be selected by another PMU.
PMU 1 CLASS (Range P, M, None)
selected for class P synchrophasors and if the system frequency is 50 or 60 Hz, respectively.
PMU 1 NETWORK REPORTING FORMAT
IEEE floating point numbers. This setting complies with bit-1 of the FORMAT field of the C37.118 configuration frame. Note
that this setting applies to synchrophasors only; the user-selectable FlexAnalog channels are always transmitted as 16-bit
integer values.
PMU 1 NETWORK REPORTING STYLE
imaginary) or in polar (magnitude and angle) coordinates. This setting complies with bit-0 of the FORMAT field of the
C37.118 configuration frame.
— This setting specifies the reporting rate for the network (Ethernet) port. This value applies to all PMU streams
PMU 1 RATE
of the device that are assigned to transmit over this aggregator. For a system frequency of 60 Hz (50 Hz), the C60
generates a reporting mismatch message if the selected rate is not set as 10 Hz, 12 Hz, 15 Hz, 20 Hz, 30 Hz, 60 Hz, or 120
Hz (or 10 Hz, 25 Hz, 50 Hz, or 100 Hz when the system frequency is 50 Hz) when entered via the keypad or software; and
the C60 stops the transmission of reports. Note that 4 Hz is not allowed for an M-class 50 Hz system.
PMU 1 f & df/dt FILTER
This setting allows applying post-filtering to the frequency and rate-of-change of-frequency to avoid reporting erroneous
values, which can possibly happen during fault, switching, and other system disturbances. For example, choosing 20Hz/s
<10Hz setting ensures that if rate-of-change of-frequency between current reporting instance and previous one exceeds
20Hz/s or frequency deviation from the nominal frequency exceeds 10Hz, then new frequency and rate-of-change of-
frequency value are invalidated. If this happens, the previous valid value of the frequency is maintained and rate-of-
5
change of-frequency value is forced to 0 at this reporting instance.
to
PMU 1 PHS-1 PMU 1 PHS-14
synchronized measurements. The table outlines available synchrophasor values.
Table 5-17: Synchrophaser settings
Selection Meaning
Va First voltage channel, either Va or Vab
Vb Second voltage channel, either Vb or Vbc
Vc Third voltage channel, either Vc or Vca
Vx Fourth voltage channel
Ia Phase A current, physical channel or summation as per the source settings
Ib Phase B current, physical channel or summation as per the source settings
Ic Phase C current, physical channel or summation as per the source settings
Ig Fourth current channel, physical or summation as per the source settings
V1 Positive-sequence voltage, referenced to Va
V2 Negative-sequence voltage, referenced to Va
V0 Zero-sequence voltage
I1 Positive-sequence current, referenced to Ia
I2 Negative-sequence current, referenced to Ia
I0 Zero-sequence current
These settings allow for optimizing the frame size and maximizing transmission channel usage, depending on a given
application. Select "Off" to suppress transmission of a given value.
to
PMU 1 PHS-1 NM
character ASCII strings are allowed as in the CHNAM field of the configuration frame. These names are typically based on
station, bus, or breaker names.
5-142
— This setting selects the synchrophasor class. A reporting rate of 100 or 120 can only be
— This setting selects between reporting synchrophasors as 16-bit integer or 32-bit
— This setting selects between reporting synchrophasors in rectangular (real and
— This setting is not supported currently and will be available in a future release.
— These settings specify synchrophasors to be transmitted from the superset of all
— These settings allow for custom naming of the synchrophasor channels. Sixteen-
PMU 1 PHS-14 NM
C60 BREAKER PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS