Monitored Data - ABB Relion Technical Manual

1MRK 502 048-UUS A
14.1.7.5
14.1.8
14.1.8.1
Technical manual

Monitored data

Table 374: VNMMXU Monitored data
Name Type
V_A REAL
VA_ANGL REAL
V_B REAL
VB_ANGL REAL
V_C REAL
VC_ANGL REAL
Operation principle
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
Values (Range) Unit
- kV
- deg
- kV
- deg
- kV
- deg
Section 14
Monitoring
Description
V_A Amplitude, magnitude of
reported value
V_A Angle, magnitude of
reported value
V_B Amplitude, magnitude of
reported value
V_B Angle, magnitude of
reported value
V_C Amplitude, magnitude of
reported value
VC Angle, magnitude of
reported value
527