GE L30 Instruction Manual page 232

5.4 SYSTEM SETUP
This section contains basic phasor measurement unit (PMU) data, such as functions, source settings, and names.
• PMU 1 FUNCTION: This setting enables the PMU 1 functionality. Any associated functions (such as the recorder or
triggering comparators) will not function if this setting is "Disabled". Use this setting to permanently enable or disable
the feature.
• PMU 1 IDCODE: This setting assigns a numerical ID to the PMU. It corresponds to the IDCODE field of the data, con-
figuration, header, and command frames of the IEEE C37.118 protocol. The PMU uses this value when sending data,
configuration, and header frames; and it responds to this value when receiving the command frame. This is used when
only data from one PMU is present.
• PMU 1 STN: This setting assigns an alphanumeric ID to the PMU station. It corresponds to the STN field of the config-
uration frame of the IEEE C37.118 protocol. This value is a 16-character ASCII string as per the IEEE C37.118 stan-
dard.
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• PMU 1 SIGNAL SOURCE: This setting specifies one of the available L30 signal sources for processing in the PMU.
Note that any combination of voltages and currents can be configured as a source. The current channels could be con-
figured as sums of physically connected currents. This facilitates PMU applications in breaker-and-a-half, ring-bus, and
similar arrangements. The PMU feature calculates voltage phasors for actual voltage (A, B, C, and auxiliary) and cur-
rent (A, B, C, and ground) 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 could 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): This setting selects the synchrophasor class. Note that a reporting rate of 100 or
120 can only be selected for class P synchrophasors and if the system frequency is 50 Hz or 60 Hz, respectively.
• PMU 1 FORMAT: This setting selects whether synchrophasors are reported as 16-bit integers or 32-bit 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 STYLE: This setting selects whether synchrophasors are reported in rectangular (real and imaginary) coordi-
nates or in polar (magnitude and angle) coordinates. This setting complies with bit-0 of the FORMAT field of the
C37.118 configuration frame.
• PMU 1 RATE: This setting specifies the reporting rate for the network (Ethernet) port. This value applies to all PMU
streams of the device that are assigned to transmit over this aggregator. For a system frequency of 60 Hz (50 Hz), the
L30 will generate 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 L30 will stop the transmission of reports. See the tables below for additional detail. Note that for
firmware 6.0 a maximum of two PMUs can be set to a reporting rate of 120 Hz for a 60 Hz system (or 100 Hz for 50 Hz
system).
5-88
PMU 1 D-CH-16:
MESSAGE
Off
PMU 1 REC D-CH-16
MESSAGE
NM: DigChannel16
PMU 1 REC D-CH-16
MESSAGE
NORMAL STATE: Off
 37.118 PMU 1
MESSAGE
 CONFIGURATION
 90-5 PMU 1
MESSAGE
 CONFIGURATION
L30 Line Current Differential System
Range: FlexLogic™ operand
Range: 16-character ASCII string
Range: Off, On
See below
See below.
5 SETTINGS
GE Multilin