DeltaI: The setting of DeltaI for fault inception detection is by default set to 10%
of IBase, which is suitable in most cases.
Delta3I0: The setting of the parameter Delta3I0 for fault inception detection is by
default set to 10% of UBase, which is suitable in most cases.
DeltaU: The setting of DeltaU for fault inception detection is by default set to 5%
of IBase, which is suitable in most cases.
Delta3U0: The setting of Delta3U0 for fault inception detection is by default set to
5% of UBase, which is suitable in most cases.
Zreach: The setting of Zreach must be adopted to the specific application. The
setting is used in the SIR calculation for detection of high SIR.
SIRLevel: The setting of the parameter SIRLevel is by default set to 10. This is a
suitable setting for applications with CVT to avoid transient overreach due to the
CVT dynamics. If magnetic voltage transformers are used, set SIRLevel to 15 the
highest level.
IMinOp: The minimum operate current for the SIR measurement is by default set
to 20% of IBase.
8.8 Faulty phase identification with load encroachment
FMPSPDIS
SEMOD153819-1 v5
8.8.1 Identification
SEMOD155879-2 v3
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Faulty phase identification with load
encroachment for mho
FMPSPDIS
S00346 V1 EN-US
21
8.8.2 Application
SEMOD154764-4 v6
The operation of transmission networks today is in many cases close to the stability
limit. Due to environmental considerations the rate of expansion and reinforcement
of the power system is reduced for example, difficulties to get permission to build
new power lines.
The ability to accurately and reliably classifying different types of fault so that
single pole tripping and autoreclosing can be used which plays an important roll in
this matter.
Section 8 1MRK 506 369-UEN B
Impedance protection
286 Line distance protection REL670 2.2 IEC
Application manual
To Next Page
Loading...
