Measurements; Identification; Application - ABB REQ650 Applications Manual

1MRK 505 291-UEN A
12.4
12.4.1
12.4.2
Application manual

Measurements

Identification

Function description
Measurements
Phase current measurement
Phase-phase voltage measurement
Current sequence component
measurement
Voltage sequence measurement
Phase-neutral voltage measurement

Application

Measurement functions is used for power system measurement, supervision and
reporting to the local HMI, monitoring tool within PCM600 or to station level for
example, via IEC 61850. The possibility to continuously monitor measured values of
active power, reactive power, currents, voltages, frequency, power factor etc. is vital
for efficient production, transmission and distribution of electrical energy. It provides
to the system operator fast and easy overview of the present status of the power
system. Additionally, it can be used during testing and commissioning of protection
and control IEDs in order to verify proper operation and connection of instrument
transformers (CTs and VTs). During normal service by periodic comparison of the
measured value from the IED with other independent meters the proper operation of
the IED analog measurement chain can be verified. Finally, it can be used to verify
IEC 61850 IEC 60617
identification identification
CVMMXN
P, Q, S, I, U, f
SYMBOL-RR V1 EN
CMMXU
I
SYMBOL-SS V1 EN
VMMXU
U
SYMBOL-UU V1 EN
CMSQI
I1, I2, I0
SYMBOL-VV V1 EN
VMSQI
U1, U2, U0
SYMBOL-TT V1 EN
VNMMXU
U
SYMBOL-UU V1 EN
Section 12
Monitoring
ANSI/IEEE C37.2
device number
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261