ABB Relion 650 Series Technical Manual page 186

Section 6
Current protection
1. PUFW=1 when operating quantity magnitude Iop x cos(φ -
parameter
2. PUREV=1 when operating quantity magnitude Iop x cos(φ -
setting parameter
direction.
These signals shall be used for communication based ground-fault teleprotection communication
schemes (permissive or blocking).
Simplified logic diagram for directional supervision element with integrated directional
comparison step is shown in figure 94:
0.6
X
INDirPU
X
0.4
polMethod=Voltage
polMethod=Dual
polMethod=Current
RNPol
XNPol
BLOCK
ANSI07000067 V3 EN-US
Figure 94: Simplified logic diagram for directional supervision element with integrated directional
comparison step
180
INDirPU and directional supervision element detects fault in forward direction.
INDirPU and directional supervision element detects fault in reverse
|
|
Iop
a
a>b
b
a
a>b
b
OR
VPol
OR
IPol
T
0.0
F
X
Complex
Number
© Copyright 2011 ABB Power Grids. All rights reserved
AND
REVERSE_Int
AND
FORWARD_Int
AngleRCA
VPolMin
IPolMin
T
Iop
0.0
F
VTPol
VIPol
STAGE1_DIR_Int
T
STAGE2_DIR_Int
0.0
F
STAGE3_DIR_Int
STAGE4_DIR_Int
1MRK 506 326-UUS B
AngleRCA ) is bigger than setting
AngleRCA ) is bigger than 60% of
FWD
AND FORWARD_Int
AND
REVERSE_Int
RVS
OR
AND
ANSI07000067-3-en.vsd
Line distance protection REL650
Technical manual
PUREV
PUFW