538 D90
PLUS
LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
PHASOR MEASUREMENT UNIT CHAPTER 11: METERING
– Ig — Fourth current channel, physical channel, 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.
PHS-1 Name, PHS-2 Name, PHS-3 Name,..., PHS-14 Name
Range: 16 alphanumeric characters
Default: GE-UR+PMU1-V1, GE-UR+PMU1-V2, GE-UR-PMU1+V3,..., GE-UR+PMU1-V14
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 are based typically on station, bus, or breaker names.
A-CH-1, A-CH-2, A-CH-3,..., A-CH-8
Range: available FlexAnalog values
Default: Off
These settings select 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 16-bit integer values.
A-CH-1 Name, A-CH-2 Name, A-CH-3 Name,..., A-CH-8 Name
Range: 16 alphanumeric characters
Default: AnalogChannel1, AnalogChannel2, AnalogChannel3,..., AnalogChannel8
These settings allow for custom naming of the analog channels. Sixteen-character ASCII
strings are allowed as in the CHNAM field of the configuration frame.
D-CH-1, D-CH-2, D-CH-3,..., D-CH-16
Range: any metering logic operand or shared operand
Default: Off
These settings select any digital flag measured by the relay to be included as a user-
selectable digital channel of the data frame. Up to 16 analog channels can be
configured to send any operand from the relay. The configured digital flags are sampled
concurrently with the synchrophasor 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.
D-CH-1 Name, D-CH-2 Name, D-CH-3 Name,..., D-CH-16 Name
Range: 16 alphanumeric characters
Default: DigitalChannel1, DigitalChannel2, DigitalChannel3,..., DigitalChannel16
These settings allow for custom naming of the digital channels. Sixteen-character ASCII
strings are allowed as in the CHNAM field of the configuration frame.
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