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12.1.7.5
Monitored data
Table 366:
VNMMXU Monitored data
Name
Type
Values (Range)
Unit
Description
V_A
REAL
-
kV
V_A Amplitude, magnitude of
reported value
VA_ANGL
REAL
-
deg
V_A Angle, magnitude of
reported value
V_B
REAL
-
kV
V_B Amplitude, magnitude of
reported value
VB_ANGL
REAL
-
deg
V_B Angle, magnitude of
reported value
V_C
REAL
-
kV
V_C Amplitude, magnitude of
reported value
VC_ANGL
REAL
-
deg
VC Angle, magnitude of
reported value
12.1.8
Operation principle
12.1.8.1
Measurement supervision
The protection, control, and monitoring IEDs have functionality to measure and further
process information for currents and voltages obtained from the pre-processing blocks.
The number of processed alternate measuring quantities depends on the type of IED and
built-in options.
The information on measured quantities is available for the user at different locations:
•
Locally by means of the local HMI
•
Remotely using the monitoring tool within PCM600 or over the station bus
•
Internally by connecting the analog output signals to the Disturbance Report function
Phase angle reference
All phase angles are presented in relation to a defined reference channel. The General
setting parameter
PhaseAngleRef
defines the reference. The
PhaseAngleRef
is set in local
HMI under:
Configuration/Analog modules/Reference
channel service values.
Zero point clamping
Measured value below zero point clamping limit is forced to zero. This allows the noise
in the input signal to be ignored. The zero point clamping limit is a general setting
(
XZeroDb
where X equals S, P, Q, PF, V, I, F, IA, IB, IC, VA, VB, VC, VAB, VBC,
VCA, I1, I2, 3I0, V1, V2 or 3V0). Observe that this measurement supervision zero point
1MRK 511 287-UUS A
Section 12
Monitoring
439
Technical manual
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