ABB Relion 670 Series Applications Manual page 106

Section 6
Wide area measurement system
MU
U
TRM
I
U
TRM
I
I/P
MIM
BIM
GPS /
IRIG-B
IEC140000146 V2 EN-US
Figure 38: Overview of reporting functionality (PMUREPORT)
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.
6.2.3.1 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.
100
SMAI
SMMI
MEAS.
OR
PROTECTION
OP
UP
OC
PPS time data
UV
© Copyright 2017 ABB. All rights reserved
U/I samples
PMUREPORT1
PHASOR1
PHASOR2
IEEEC37.118 / 1344
messages
PHASOR32
ANALOG1
ANALOG2
ANALOG24
BINARY1
BINARY2
BINARY24
FREQTRIG
DFDTTRIG
MAGHIGHTRIG
MAGLOWTRIG
1MRK 511 401-UUS F
8 TCP
NUM
6 UDC
IEC140000146-1-en.vsd
GUID-4F3BA7C7-8C9B-4266-9F72-AFB139E9DC21 v2
Bay control REC670
Application manual