ABB Relion 650 Series Technical Manual page 126

Section 5
Impedance protection
Table 34: FMPSPDIS Group settings (advanced)
Name Values (Range)
DeltaIMinOp 5 - 100
DeltaVMinOp 5 - 100
V1Level 5 - 100
I1LowLevel 5 - 200
V1MinOp 5 - 100
V2MinOp 1 - 100
INRelPG 10 - 100
3I0BLK_PP 10 - 100
Table 35: FMPSPDIS Non group settings (basic)
Name Values (Range)
GlobalBaseSel 1 - 6
5.4.6 Operation principle
5.4.6.1 The phase selection function
Faulty phase identification with load encroachment for mho (FMPSPDIS, 21) function can be
decomposed into six different parts:
1. A high speed delta based current phase selector
2. A high speed delta based voltage phase selector
3. A symmetrical components based phase selector
4. Fault evaluation and selection logic
5. A load encroachment logic
6. A blinder logic
The total function can be blocked by activating the input BLOCK.
Delta based current and voltages
The delta based fault detection function uses adaptive technique and is based on patent
US4409636.
The aim of the delta based phase selector is to provide very fast and reliable phase selection for
releasing of tripping from the high speed Mho measuring element.
120
Unit Step
%IB 1
%VB 1
%VB 1
%IB 1
%VB 1
%VB 1
%IB 1
%IB 1
Unit Step
- 1
© Copyright 2011 ABB Power Grids. All rights reserved
Default Description
10 Delta current level in % of IBase
20 Delta voltage level in % of Vbase
80 Positive sequence voltage limit for
identification of three phase fault
10 Positive sequence current level for
identification of three phase fault in % of
IBase
20 Minimum operate positive sequence
voltage for phase selection
5 Minimum operate negative sequence
voltage for phase selection
20 3I0 limit for release Phase-Ground
measuring loops in % of maximum phase
current
40 3I0 limit for blocking Phase-to-Phase
measuring loops in % of maximum phase
current
Default Description
1 Selection of one of the Global Base Value
groups
1MRK 506 326-UUS B
SEMOD153832-4 v3
SEMOD153832-14 v3
Line distance protection REL650
Technical manual