CHAPTER 5: SETTINGS
TESTING
N60 NETWORK STABILITY AND SYNCHROPHASOR MEASUREMENT SYSTEM – INSTRUCTION MANUAL
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The relay must be in test mode to use the PMU test mode. That is, the
TESTING
TEST MODE FUNCTION
setting must be
“Enabled,” and the
TESTING
TEST MODE INITIATE
initiating signal must be “On.”
During the PMU test mode, the physical channels (VA, VB, VC, VX, IA, IB, IC, and IG), frequency, and rate of change of
frequency are substituted with user values, while the symmetrical components are calculated from the physical channels.
The test values are not explicitly marked in the outgoing data frames. When required, it is recommended to use the user-
programmable digital channels to signal the IEEE C37.118 client that test values are being sent in place of the real
measurements.
The UR Synchrophasor Implementation defines a test mode that sends a pre-defined set of synchrophasors out over the
communication channel when the test mode function setting is enabled. In test mode, the following actions take place:
•
The Data Invalid / Test Mode bit (bit 15 in the STAT word) is set
•
The Sim bit in all output datasets is set
5.11.4 Force contact inputs
SETTINGS
TESTING
FORCE CONTACT INPUTS
The force contact inputs feature provides a method of performing checks on the function of all contact inputs.
While in Forcible test mode, the relay contact inputs can be pre-programmed to respond in the following ways:
•
If set to “Normal,” the input remains fully operational. It is controlled by the voltage across its input terminals and can
be turned on and off by external circuitry. Select this value if a given input must be operational during the test. This
includes, for example, an input initiating the test, or being a part of a user pre-programmed test sequence.
•
If set to “Open,” the input is forced to report as opened (Logic 0) while the operand selected by
TEST MODE FORCING
setting is On, regardless of the voltage across the input terminals. While the selected operand is Off, the input behaves
as it does when in service.
•
If set to “Closed,” the input is forced to report as closed (Logic 1) while the operand selected by
TEST MODE FORCING
setting is On regardless of the voltage across the input terminals. While the selected operand is Off, the input behaves
as it does when in service.
5.11.5 Force contact outputs
SETTINGS
TESTING
FORCE CONTACT OUTPUTS
PMU 1 IG TEST
ANGLE: 0.00°
Range: –180.00 to 180.00° in steps of 0.05
PMU 1 TEST
FREQUENCY: 60.000 Hz
Range: 20.000 to 70.000 Hz in steps of 0.001
PMU 1 TEST
df/dt: 0.00 Hz/s
Range: –10.00 to 10.00 Hz/s in steps of 0.01
FORCE CONTACT
INPUTS
FORCE Cont Ip 1
: Normal
Range: Normal, Open, Closed
FORCE Cont Ip 2
: Normal
Range: Normal, Open, Closed
FORCE Cont Ip xx
: Normal
Range: Normal, Open, Closed
On restart, the
TEST MODE FORCING
setting and the force contact input and force contact output settings revert to
their default states.
FORCE CONTACT
OUTPUTS
FORCE Cont Op 1
: Normal
Range: Normal, Energized, De-energized, Freeze