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Memorial University - Electronic Theses and Dissertations 1
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Document Description
Title
Performance
enhancement
of
digital
relays
for
transmission
line
distance
protection
Author
Liang
,
Feng
,
1971-
Description
Thesis
(M.Eng.)--Memorial
University
of
Newfoundland
,
2003.
Engineering
and
Applied
Science
Date
2003
Pagination
xiii, 132 leaves : ill.
Subject
Electric
power
systems--Protection;
Protective
relays
Degree
M.Eng.
Degree Grantor
Memorial University of Newfoundland. Faculty of Engineering and Applied Science
Discipline
Engineering and Applied Science
Language
Eng
Notes
Bibliography:
leaves
127-132.
Abstract
This
thesis
investigates
the
performance
enhancement
of
digital
relays
for
transmission
line
distance
protection
from
filtering
(extracting
the
fundamental
frequency
components)
point
of
view
and
relaying
algorithm
point
of
view.
--
Several
Fourier
based
filtering
algorithms
are
investigated
,
simulated
, and
compared
in this
thesis.
Furthermore
, a
new
wavelet
transform
based
real-time
filtering
algorithm
is
proposed.
The
studies
suggest
that this
method
converges
faster
than
Fourier
based
algorithms.
--
Two
types
of
relaying
algorithms
are also
examined
in this
thesis.
One
algorithm
,
which
compensates
the
fault
resistance
,
only
needs
to
monitor
the
voltage
and
current
signal
at the
relay
end.
The
other
algorithm
makes
use
of the
information
from
both
ends
of the
transmission
line
and
adaptively
adjusts
the
relay
operating
characteristics.
Both
theoretical
analysis
and
simulation
results
show
that these
algorithms
can
significantly
enhance
the
performance
of
digital
relays
for
transmission
line
distance
protection.
Type
Text
Resource Type
Electronic
thesis
or
dissertation
Format
Image/jpeg;
Application/pdf
Source
Paper copy kept in the Centre for Newfoundland Studies, Memorial University Libraries
Local Identifier
a1614938
Rights
The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission.
Collection
Electronic
Theses
and
Dissertations
Scanning Status
Completed
PDF File
(13.31
MB)
--
http://collections.mun.ca/PDFs/theses/Liang_Feng.pdf
CONTENTdm file name
157501.cpd
