Frequency Reporting - ABB RELION 670 Series Applications Manual

1MRK 511 364-UUS A
MU
U
TRM
I
U
TRM
I
I/P
MIM
BIM
GPS /
IRIG-B
PPS time data
IEC140000146 V1 EN-US
Figure 34: Overview of reporting functionality (PMUREPORT) in RES670
The TRM modules are individually AC-calibrated in the factory. The calibration data is stored in the
prepared area of the TRM EEProm. The pre-processor block is extended with calibration
compensation and a new angle reference method based on timestamps. The AI3P output of the
preprocessor block is used to provide the required information for each respective PMUREPORT
phasor channel. More information about preprocessor block is available in the section Signal
matrix for analog inputs SMAI.
6.1.3.1

Frequency reporting

By using patented algorithm the IED can track the power system frequency in quite wide range
from 9 Hz to 95 Hz. In order to do that, the three-phase voltage signal shall be connected to the
IED. Then IED can adapt its filtering algorithm in order to properly measure phasors of all current
and voltage signals connected to the IED. This feature is essential for proper operation of the
PMUREPORT function or for protection during generator start-up and shut-down procedure.
This adaptive filtering is ensured by proper configuration and settings of all relevant pre-
processing blocks, see Signal matrix for analog inputs in the Application manual. Note that in all
preconfigured IEDs such configuration and settings are already made and the three-phase voltage
are used as master for frequency tracking. With such settings the IED will be able to properly
estimate the magnitude and the phase angle of measured current and voltage phasors in this wide
frequency range.
Application manual
U/I samples
SMAI
SMMI
MEAS.
OR
PROTECTION
OP
UP
OC
UV
PMUREPORT1
PHASOR1
PHASOR2
IEEEC37.118 / 1344
messages
PHASOR32
ANALOG1
ANALOG2
ANALOG24
BINARY1
BINARY2
BINARY24
FREQTRIG
DFDTTRIG
MAGHIGHTRIG
MAGLOWTRIG
Section 6
Wide area measurement system
8 TCP
OEM
6 UDC
IEC140000146-1-en.vsd
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