H.19
Date Code 20170814
Instruction Manual
SEL-700G Relay
Synchrophasors
IEEE C37.118 PMU Setting Example
The protection settings are not shown.
The protection engineer performs a bandwidth check, using Table H.11, and
determines the necessary message size. The system requirements, in order of
appearance in Table H.11, are:
➤
6 Synchrophasors, in integer representation
➤
Integer representation for the frequency data
➤
3 digital status bits, which require one status word
The message size is 18 + 6 • 4 + 2 • 2 + 1 • 2 = 48 bytes. Using Table H.12, the
engineer verifies that the port data rate of 9600 bps is adequate for the
message, at 10 messages per second.
The Protection SEL
OGIC
Variables SV14, SV15, and SV16 are used to
transmit the breaker status, loss-of-potential alarm, and frequency
measurement status, respectively. Make the Global settings as shown in
Table H.13.
Table H.13
Example Synchrophasor Global Settings
Setting
Description
Value
FNOM
Nominal System Frequency (50, 60 Hz)
60
EPMU
Enable Synchronized Phasor Measurement (Y, N)
Y
MRATE
Messages per Second (1, 2, 4, 5, 10, 12, 15, 20, 30, 60)
10
PMAPP
PMU Application (F := Fast Response, N := Narrow
Bandwidth)
FAST
PHCOMP
Frequency-Based Phasor Compensation (Y, N)
Y
PMSTN
Station Name (16 characters)
SAMPLE1
PMID
PMU Hardware ID (1–65534)
14
PHDATAV
Phasor Data Set, Voltages (V1, ALL, NA)
V1
PHVOLT
Voltage Source (VX, VY, Both)
VX
VXCOMP
Phase Voltage Angle Compensation Factor (–179.99 to 180
degrees)
4.20
PHDATAI
Phasor Data Set, Currents (I1, ALL, NA)
ALL
PHCURR
Current Source (IX, IY, Both)
IX
IXCOMP
Phase Current Angle Compensation Factor (–179.99 to 180
degrees)
3.50
NUMDSW
Number of 16-bit Digital Status Words (0 or 1)
1
Table H.14
Example Synchrophasor Logic Settings
Logic
Setting
Description
Value
TREA1
Trigger Reason Bit 1 (SEL
OGIC
Equation)
NA
TREA2
Trigger Reason Bit 2 (SEL
OGIC
Equation)
NA
TREA3
Trigger Reason Bit 3 (SEL
OGIC
Equation)
NA
TREA4
Trigger Reason Bit 4 (SEL
OGIC
Equation)
NA
PMTRIG
Trigger (SEL
OGIC
Equation)
NA
Summary of Contents for SEL-700G Series
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