ABB RELION 650 SERIES, Technical Manual

Page: 557 / 942

Phase angle reference
SEMOD54417-303 v5
All phase angles are presented in relation to a defined reference channel. The
General setting parameter
PhaseAngleRef defines the reference, see section
"Analog inputs" .
Zero point clamping
SEMOD54417-137 v4
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 CVMMXN.
Continuous monitoring of the measured quantity
SEMOD54417-140 v5
Users can continuously monitor the measured quantity available in the function
block by means of four defined operating thresholds, see figure
282 . The
monitoring has two different modes of operating:
• Overfunction, when the measured quantity exceeds the High limit ( XHiLim ) or
High-high limit ( XHiHiLim ) pre-set values
• Underfunction, when the measured quantity decreases under the Low limit
(
XLowLim ) or Low-low limit ( XLowLowLim ) pre-set values.
X_RANGE is illustrated in figure 282 .
IEC05000657-3-en.vsdx
X_RANGE= 1
X_RANGE = 3
X_RANGE=0
Hysteresis
High-high limit
High limit
Low limit
Low-low limit
X_RANGE=2
X_RANGE=4
Y
t
X_RANGE=0
Y = Magnitude of the Measured Quantity
IEC05000657 V3 EN-US
Figure 282: Presentation of operating limits
Each analogue output has one corresponding supervision level output
(X_RANGE). The output signal is an integer in the interval 0-4 (0: Normal, 1:
High limit exceeded, 3: High-high limit exceeded, 2: below Low limit and 4: below
Low-low limit).
1MRK 506 382-UEN A
Section 14
Monitoring
Line distance protection REL650 2.2 IEC 551
Technical manual