GE L30 Instruction Manual page 220

5.4 SYSTEM SETUP
• PMU1 PORT PHS-1 to PMU1 PORT PHS-14: These settings specify synchrophasors to be transmitted from the
superset of all synchronized measurements. The available synchrophasor values are tabulated below.
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.
• PMU1 PORT PHS-1 NM to PMU1 PORT PHS-14 NM: These settings allow for custom naming of the synchrophasor
channels. Sixteen-character ASCII strings are allowed as in the CHNAM field of the configuration frame. These names
5
are typically based on station, bus, or breaker names.
• PMU1 PORT A-CH-1 to PMU1 PORT A-CH-8: These settings specify any analog data measured by the relay to be
included as a user-selectable analog channel of the data frame. Up to eight analog channels can be configured to send
any FlexAnalog value from the relay. Examples include 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.
• PMU1 PORT A-CH-1 NM to PMU1 PORT A-CH-8 NM: These settings allow for custom naming of the analog chan-
nels. Sixteen-character ASCII strings are allowed as in the CHNAM field of the configuration frame.
• PMU1 PORT D-CH-1 to PMU1 PORT D-CH-16: These settings specify any digital flag measured by the relay to be
included as a user-selectable digital channel of the data frame. Up to sixteen digital channels can be configured to
send any FlexLogic™ operand from the relay. The configured digital flags are sampled concurrently with the synchro-
phasor instant. The 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.
• PMU1 PORT D-CH-1 NM to PMU1 PORT D-CH-16 NM: These settings allow for custom naming of the digital chan-
nels. Sixteen-character ASCII strings are allowed as in the CHNAM field of the configuration frame.
• PMU1 PORT D-CH-1 NORMAL STATE to PMU1 PORT D-CH-16 NORMAL STATE: These settings allow for specify-
ing a normal state for each digital channel. These states are transmitted in configuration frames to the data concentra-
tor.
5-84 L30 Line Current Differential System
5 SETTINGS
GE Multilin