ABB Relion 650 Series Technical Manual page 279

1MRK 506 326-UUS B
Name Values (Range)
VSealInPU 1 - 100
IDLDPU 1 - 100
VDLDPU 1 - 100
Table 211: SDDRFUF Non group settings (basic)
Name Values (Range)
GlobalBaseSel 1 - 6
9.2.6 Monitored data
Table 212: SDDRFUF Monitored data
Name
3I0
3I2
3V0
3V2
9.2.7 Operation principle
9.2.7.1 Zero and negative sequence detection
The zero and negative sequence function continuously measures the currents and voltages in all
three phases and calculates: (see figure 140)
• the zero-sequence voltage 3V
• the zero-sequence current 3I
• the negative sequence current 3I
• the negative sequence voltage 3V
The measured signals are compared with their respective set values
3I2PU.
The function enable the internal signal FuseFailDetZeroSeq if the measured zero-sequence voltage
is higher than the set value
3I0PU .
The function enable the internal signal FuseFailDetNegSeq if the measured negative sequence
voltage is higher than the set value
the set value
Line distance protection REL650
Technical manual
Unit Step
%VB 1
%IB 1
%VB 1
Unit Step
- 1
Type Values (Range)
REAL -
REAL -
REAL -
REAL -
0
0
3V0PU and the measured zero-sequence current is below the set value
3V2PU and the measured negative sequence current is below
3I2PU .
© Copyright 2011 ABB Power Grids. All rights reserved
Default
70
5
60
Default
1
Unit
A
A
kV
kV
2
2
Secondary system supervision
Description
Pickup of seal-in phase voltage in % of
VBase
Pickup for phase current detection in % of
IBase for dead line detection
Pickup for phase voltage detection in % of
VBase for dead line detection
Description
Selection of one of the Global Base Value
groups
Description
Magnitude of zero sequence current
Magnitude of negative sequence current
Magnitude of zero sequence voltage
Magnitude of negative sequence voltage
GUID-F2E5BA8F-BB7B-4BF8-9E4C-C5725F69744A v2
3V0PU and 3I0PU , 3V2PU and
Section 9
PID-1126-MONITOREDDATA v6
273