GE G60 Instruction Manual page 330

SYSTEM SETUP
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 G60
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 G60 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
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-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 5-19: 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
5
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.
to
PMU 1 A-CH-1 PMU 1 A-CH-16
selectable analog channel of the data frame. Up to 16 analog channels can be configured to send any FlexAnalog value
from the relay. Examples include frequency, rate of frequency change, active and reactive power, per phase or three-phase
power, power factor, temperature via RTD inputs, and THD. The configured analog values are sampled concurrently with
the synchrophasor instant and sent as 32-bit floating-point values scaled to Engineering units.
to
PMU 1 A-CH-1 NM
ASCII strings are allowed as in the CHNAM field of the configuration frame.
to
PMU 1 D-CH-1 PMU 1 D-CH-16
selectable digital channel of the data frame. Up to 16 digital channels can be configured to send any FlexLogic operand
from the relay. The configured digital flags are sampled concurrently with the synchrophasor instant. These values are
mapped into a two-byte integer number, with byte 1 LSB corresponding to the digital channel 1 and byte 2 MSB
corresponding to digital channel 16.
5-154
— This setting selects between reporting synchrophasors in rectangular (real and
— This setting allows applying post-filtering to the frequency and rate-of-change of-frequency to
— 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
— These settings specify any analog data measured by the relay to be included as a user-
— These settings allow for custom naming of the analog channels. Sixteen-character
PMU 1 A-CH-16 NM
— These settings specify any digital flag measured by the relay to be included as a user-
G60 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS