Frontiers in Energy Research,
Journal Year:
2024,
Volume and Issue:
12
Published: Aug. 20, 2024
The
integration
of
renewable
energy
sources
into
the
power
grid
is
essential
for
sustainable
development,
yet
it
presents
significant
dependability
challenges,
particularly
in
terms
reliability,
stability,
and
robustness
due
to
inherent
variability
these
sources.
This
research
introduces
a
novel
hybrid
methodology
that
combines
Monte
Carlo
simulation
with
Newton-Raphson
flow
analysis
enhance
reliability
assessment
grid-connected
systems.
innovative
approach
uniquely
addresses
limitations
existing
methodologies
by
merging
probabilistic
handling
uncertainties
precise
deterministic
analysis.
Our
method
significantly
reduces
Loss
Load
Expectation
(LOLE)
5
h
per
year
Energy
(LOEE)
200
MWh
year,
outperforming
traditional
methods
which
typically
report
LOLEs
2020
h/year
LOEEs
10001000
MWh/year.
Additionally,
achieves
reduction
losses
1.2%,
showcasing
its
superior
efficiency
compared
2.5%
seen
standalone
methods.
Real-time
validation
using
IEEE-30
bus
model
further
confirms
practical
applicability
our
approach,
making
pivotal
tool
enhancing
stability
optimizing
integration.
not
only
advances
but
also
sets
new
standard
balancing
accuracy
computational
system
management.
implications
this
work
are
far-reaching,
offering
contributions
both
management
resources.
Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: May 13, 2024
Abstract
This
paper
explores
scenarios
for
powering
rural
areas
in
Gaita
Selassie
with
renewable
energy
plants,
aiming
to
reduce
system
costs
by
optimizing
component
numbers
meet
demands.
Various
scenarios,
such
as
combining
solar
photovoltaic
(PV)
pumped
hydro-energy
storage
(PHES),
utilizing
wind
PHES,
and
integrating
a
hybrid
of
PV,
wind,
have
been
evaluated
based
on
diverse
criteria,
encompassing
financial
aspects
reliability.
To
achieve
the
results,
meta-heuristics
Multiobjective
Gray
wolf
optimization
algorithm
(MOGWO)
Grasshopper
(MOGOA)
were
applied
using
MATLAB
software.
Moreover,
optimal
sizing
has
investigated
real-time
assessment
data
meteorological
from
Sillasie,
Ethiopia.
Metaheuristic
techniques
employed
pinpoint
most
favorable
loss
power
supply
probability
(LPSP)
least
cost
(COE)
total
life
cycle
(TLCC)
system,
all
while
meeting
operational
requirements
various
scenarios.
The
Multi-Objective
Grey
Wolf
Optimization
technique
outperformed
Algorithm
problem,
suggested
results.
Furthermore,
MOGWO
findings,
PV-Wind-PHES
demonstrated
lowest
COE
(0.126€/kWh)
TLCC
(€6,897,300),
along
satisfaction
village's
demand
LPSP
value.
In
PV-Wind-PHSS
scenario,
are
38%,
18%,
2%,
1.5%
lower
than
those
Wind-PHS
PV-PHSS
at
0%,
according
Overall,
this
research
contributes
valuable
insights
into
design
implementation
sustainable
solutions
remote
communities,
paving
way
enhanced
access
environmental
sustainability.
Case Studies in Thermal Engineering,
Journal Year:
2024,
Volume and Issue:
59, P. 104511 - 104511
Published: May 11, 2024
This
study
conducts
an
evaluation
of
integrated
power,
heat,
and
cooling
system
reliant
on
geothermal
energy.
The
process
involves
integrating
both
the
Organic
Rankine
Cycle
(ORC)
Goswami
cycle.
main
objective
this
investigation
is
to
analyze
effects
different
variables
system's
operation.
Additionally,
a
comprehensive
analysis
undertaken
examine
how
presence
operational
fluids
in
ORC
affects
overall
efficiency
system.
Subsequently,
in-depth
economic
conducted,
taking
into
account
initial
investment
for
implementation,
capital,
levelized
cost
goods.
calculation
determining
income,
cash
flow,
pay-back
time,
which
heavily
rely
selling
prices
products.
By
utilizing
genetic
algorithm
conjunction
with
artificial
intelligence
algorithm,
can
be
optimized
minimize
time
energy,
while
simultaneously
maximizing
net
production
power.
results
optimization
are
then
compared
baseline
state
assess
effectiveness
proposed
enhancements.
multifaceted
approach
enables
performance
across
conditions
facilitates
its
parameters
improve
feasibility.
comparative
demonstrated
21%
reduction
payback
14%
increase
12%
improvement
when
reference
state.
periods
operating
ranged
from
10
15
years.
Isobutane
shortest
period
approximately
years,
was
further
8.
6
power
output
655.
8
kW,
578.
3
heat
3042
kW.
Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: June 12, 2024
Cameroon
is
currently
grappling
with
a
significant
energy
crisis,
which
adversely
affecting
its
economy
due
to
cost,
reliability,
and
availability
constraints
within
the
power
infrastructure.
While
electrochemical
storage
presents
potential
remedy,
implementation
faces
hurdles
like
high
costs
technical
limitations.
Conversely,
generator-based
systems,
although
viable
alternative,
bring
their
own
set
of
issues
such
as
noise
pollution
demanding
maintenance
requirements.
This
paper
meticulously
assesses
novel
hybrid
system
specifically
engineered
meet
diverse
needs
Douala,
Cameroon.
By
employing
advanced
simulation
techniques,
especially
Hybrid
Optimization
Model
for
Electric
Renewable
(HOMER)
Pro
program,
study
carefully
examines
intricacies
load
demands
across
distinct
consumer
categories
while
accommodating
varied
pricing
models.
The
offers
detailed
analysis
proposed
grid-connected
PV/Diesel/Generator
system,
aiming
gauge
performance,
economic
feasibility,
reliability
in
ensuring
uninterrupted
supply.
Notably,
unveils
cost
reduction
per
kilowatt-hour,
indicating
promising
updated
rates
$0.07/kW,
$0.08/kW,
$0.06/kW
low,
medium,
usage
groups,
respectively.
Furthermore,
research
underscores
importance
overcoming
operational
challenges
temperature
fluctuations,
equipment
costs,
regulatory
compliance.
It
also
acknowledges
impact
nuances
grid
integration
on
efficiency.
As
world
progresses
towards
renewable
adoption
this
investigation
lays
strong
foundation
future
advancements
management
strategies.
strives
create
sustainable
ecosystem
beyond,
where
systems
play
pivotal
role
mitigating
deficiencies
supporting
development.
Case Studies in Thermal Engineering,
Journal Year:
2024,
Volume and Issue:
59, P. 104464 - 104464
Published: April 30, 2024
As
the
demand
for
energy
continues
to
rise
unabated,
an
examination
of
constraints
posed
by
finite
fossil
fuel
reserves
becomes
crucial.
There
is
need
explore
and
underscore
imperative
shift
towards
renewable
resources,
where,
solar
widely
available
can
readily
be
used
in
different
applications,
especially
water
desalination
applications.
In
present
research,
photothermal
performance
based
nanofluids
containing
graphene
oxide
(GO),
zinc
(ZnO),
iron
(FeO),
their
composites
(GO-ZnO
GO-FeO)
have
been
studied
under
natural
sun
determine
potential
All
type
nanofluid
are
prepared
through
a
two-step
method
characterized
morphologically
using
scanning
electron
microscope
(SEM).
UV-visible
spectroscopy
assess
optical
absorbance
nanofluids.
The
outcomes
this
study
show
that
pure
GO
exhibited
excellent
absorption
visible
near-infrared
regions
as
compared
other
research
study,
which
makes
them
efficient
converting
into
heat.
For
more
assessment,
direct
or
volumetric
thermal
collector
was
evaluate
efficiency
GO,
ZnO,
FeO,
binary
GO-ZnO,
GO-FeO
flux
at
weight
concentrations
(0.01
wt.%).
sensible
heating
due
temperature
latent
heat
evaporation
mass
loss
samples
contributed
efficiency.
Pure
showed
highest
efficiency,
71%
among
all
carbon-based
structure,
peak,
dispersion
stability,
conductivity.
This
experimental
work
also
revealed
(GO-ZnO)
(GO-FeO)
higher
individual
ZnO
FeO
except
GO.
According
results
observation
work,
GO-based
candidates
collection
Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: May 27, 2024
Abstract
Reduction
of
fossil
fuel
usage,
clean
energy
supply,
and
dependability
are
all
major
benefits
integrating
distributed
resources
(DER)
with
electrical
utility
grid
(UG).
Nevertheless,
there
difficulties
this
integration,
most
notably
accidental
islanding
that
puts
worker
equipment
safety
at
risk.
Islanding
detection
methods
(IDMs)
play
a
critical
role
in
resolving
problem.
All
IDMs
thoroughly
evaluated
work,
which
divides
them
into
two
categories:
local
approaches
rely
on
generation
(DG)
side
monitoring
remote
make
use
communication
infrastructure.
The
study
offers
comparative
evaluation
to
help
choose
the
efficient
applicable
IDM,
supporting
well-informed
decision-making
for
safe
dependable
operation
systems
within
distribution
networks.
based
NDZ
outcomes,
duration,
power
quality
impact,
multi-DG
operation,
suitability,
X/R
ratio
reliance,
functioning.