ABB REG670 - Operation Principle

Table 642: VNMMXU Monitored data
Name Type Values (Range) Unit Description
UL1 REAL - kV UL1 Amplitude,
magnitude of reported
value
UL1ANGL
REAL - deg UL1 Angle, magnitude of
reported value
UL2 REAL - kV UL2 Amplitude,
magnitude of reported
value
UL2ANGL
REAL - deg UL2 Angle, magnitude of
reported value
UL3 REAL - kV UL3 Amplitude,
magnitude of reported
value
UL3ANGL
REAL - deg UL3 Angle, magnitude of
reported value
16.1.7 Operation principle
16.1.7.1 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 analogue 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.
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, U, I, F, IL1-3, UL1-3, UL12-31, I1, I2,
3I0, U1, U2 or 3U0). Observe that this measurement supervision zero point clamping
might be overridden by the zero point clamping used for the measurement values
within CVMMXU.
Section 16 1MRK502052-UEN B
Monitoring
878
Technical manual