Indonesian Journal of Electrical Engineering and Informatics (IJEEI),
Год журнала:
2023,
Номер
11(3)
Опубликована: Сен. 30, 2023
Photovoltaic
(PV)
have
become
a
priority
renewable
energy
source
to
be
developed
in
Indonesia
achieve
new
and
(NRE)
target
of
23%
2025
31%
2050.
The
operation
significant
number
rooftop
PV
can
also
change
the
type
power
system
operating
configuration
Distributed
Energy
Generation
(DEG).
majority
DEGs
which
are
NRE
generators
capable
causing
problems
because
their
intermittent
nature.
Hosting
Capacity
is
high
penetration
limit
for
without
limits
on
operational
violations.
hosting
capacity
method
used
based
generator's
minimum
operation.
In
test
consisting
3
plants
such
as
hydro
plant,
coal
geothermal
that
injected
into
139.1
MW.
With
injection
capacity,
becomes
better
with
same
average
voltage
profile
before
injection,
namely
0.991
p.u.
System
stability
by
reviewing
frequency,
rotor
angle,
speed,
after
than
injection.
Sustainability,
Год журнала:
2024,
Номер
16(13), С. 5454 - 5454
Опубликована: Июнь 27, 2024
The
global
shift
toward
integrating
renewable
energy
sources,
such
as
solar
and
wind
power,
is
revolutionizing
the
landscape,
presenting
both
opportunities
challenges
for
power
system
operations.
This
paper
delves
into
critical
concept
of
flexibility,
emphasizing
importance
maintaining
reliable
service
amidst
unpredictable
fluctuations
in
supply
demand.
Given
intermittent
nature
energy,
this
explores
key
aspects
including
generation,
demand-side,
grid
their
roles
sustaining
stability.
Various
strategies
to
enhance
flexibility
future
networks
are
examined,
advanced
storage
technologies,
demand
response
programs,
expansion
interconnection,
sophisticated
forecasting
methods,
adaptive
generation.
Additionally,
underscores
pivotal
role
market
regulatory
reforms
facilitating
integration
sources
enhancing
adaptability.
By
analyzing
benefits,
limitations,
prospects
each
strategy,
work
provides
a
comprehensive
overview
evolving
sector.
It
highlights
necessity
aligning
frameworks
with
sustainability
climate
goals
navigate
complexities
transition
effectively.
Unconventional Resources,
Год журнала:
2024,
Номер
4, С. 100079 - 100079
Опубликована: Янв. 1, 2024
The
electrification
rate
in
sub-Saharan
Africa,
standing
at
45%
2018,
is
significantly
lower
when
compared
with
global
benchmarks.
600
million
individuals
lacking
access
to
electricity
constitute
over
two-thirds
of
the
worldwide
aggregate
population
electricity.
Limitations
power
grids
have
placed
a
disproportionate
burden
lack
energy
on
rural
populations.
cheapest
approach
achieving
universal
numerous
regions
seems
be
rooted
renewable
energy.
diminishing
cost
small-scale
solar
photovoltaic
technology
for
home
systems
and
mini-grids
expected
play
pivotal
role
facilitating
provision
affordable
electric
millions.
This
study
aims
elucidate
techno-economic
benefits
augmenting
overarching
goal
advocating
adoption
mini-grid
solutions
Sub-Saharan
Africa.
Prior
research
endeavors
were
meticulously
curated
examined,
some
attention
also
given
assessing
feasibility
grid
integration.
findings
showed
that
extension
most
cost-effective
means
delivery
within
limited
proximity,
contingent
upon
topographical
considerations.
However,
beyond
this
zone,
proven
more
apt
providing
clustered
customer
But
are
not
without
challenges.
High
initial
installation,
intermittency
source,
storage
problems,
integration
challenges,
identified
problems
mini-grids.
way
forward
must
begin
mitigation
these
Some
highlighted
include
implementation
advanced
systems,
formulation
policies
geared
towards
enhancing
affordability
settings,
smart
technologies,
adherence
codes
ensure
compliance.
Algorithms,
Год журнала:
2025,
Номер
18(4), С. 183 - 183
Опубликована: Март 24, 2025
Every
year,
electric
power
systems
(EPSs)
experience
accidents
resulting
in
static
and
dynamic
instability,
as
well
supply
disruptions.
Accidents
evolve
along
various
trajectories
sometimes
can
exhibit
a
cascading
effect.
In
this
case,
the
sequential
tripping
of
generating
and/or
network
equipment
occurs
due
to
overloads
or
voltage
drops
at
nodes
network.
This
leads
significant
losses
for
industrial
commercial
consumers,
while
also
escalating
social
tensions
within
population.
study
aims
develop
an
algorithm
revealing
possibility
failure
processes
EPSs
their
development
trajectories.
The
use
planning
managing
flows
facilitates
identification
boundary
between
regions
admissible
inadmissible
post-contingency
flows.
enables
assessment
impact
topology
solutions
operational
measures
on
processes.
paper
presents
results
steady-state
calculation
test
schemes
EPS
incorporating
25,
36,
40
with
levels
6,
35,
110,
500
kV
illustrate
influence
non-homogeneity
parameters
occurrence
deployment
distributed
generation
facilities
different
capacities
FACTS
devices,
alongside
redistribution
by
changing
load
plants
electricity
costs,
are
considered
that
enhance
survivability
EPS.
performance
developed
was
illustrated
through
analysis
process
real
systemic
accident
occurred
proposed
algorithm,
when
utilized
EPS,
possibilities
pathways
subsequently
design
implement
topological
adjustments
prevent
them.
Journal of Physics Conference Series,
Год журнала:
2025,
Номер
3000(1), С. 012032 - 012032
Опубликована: Апрель 1, 2025
Abstract
Flexible
interconnection,
as
a
novel
power
system
architecture,
effectively
enhances
reliability
and
economy.
The
problem
of
site
selection
capacity
optimization
for
flexible
interconnection
represents
significant
component
planning.
Its
objective
is
to
identify
the
most
advantageous
locations
capacities
devices
while
adhering
constraints
security
economic
viability.
This
paper
proposes
solution
method
based
on
an
improved
Crested
Porcupine
Optimizer
(CPO)
address
this
problem.
By
introducing
adaptive
crossover
strategies
elite
strategies,
CPO
its
global
search
ability
convergence
speed.
Furthermore,
fitness
function
adopted
better
measure
comprehensive
benefits
schemes.
results
simulation
indicate
that
methodology
capable
addressing
challenges
associated
with
optimization.
approach
has
demonstrated
remarkable
performance,
overall
efficiency
enhancement
surpassing
40%.
Heliyon,
Год журнала:
2024,
Номер
10(17), С. e36668 - e36668
Опубликована: Авг. 23, 2024
Ensuring
stable
power
flow
and
reliable
supply
could
maintain
system
security,
improve
efficiency,
minimize
loss,
reduce
the
risk
of
outage.
Power
management
can
be
employed
to
enhance
bus
voltage
decrease
losses.
The
reliability
is
critical
for
both
customers
utility
ensure
continuity
improved
revenue.
With
growing
demand
supplies,
it
crucial
that
utilities
devote
efforts
a
consistent
meet
customer
needs.
However,
frequent
occurrence
interruptions
prolonged
duration
interruption
pose
significant
challenges
distribution
systems
in
town
Wolaita
Sodo.
This
study
aims
explore
control
through
utilization
optimal
network
reconfiguration
(DNR).
placement
tie-switches
(TS)
address
issues
done
adaptive
particle
swarm
optimization
(APSO)
algorithm.
help
APSO,
five
TS
units
achieved
indices
within
national
standard
boundary.
backward/forward
sweep
(BFS)
Markov
chain-based
Monte
Carlo
simulation
(MCMCS)
methods
are
used
load
analysis.
Through
simulation,
with
integration
TS,
SAIFI
decreases
from
value
557
about
34,
SAIDI
573.59h
43.87h
EENS
1835.5
MWh
140.38
annually,
active
loss
1631.15
kW
559.35
kW,
minimum
increases
0.7537pu
0.9502pu.
Finally,
evaluation
suggested
algorithm
variants
conducted
by
taking
into
account
takes
respond,
level
convergence
achieved,
extent
which
minimized.
Energy Reports,
Год журнала:
2023,
Номер
11, С. 342 - 354
Опубликована: Дек. 9, 2023
Rural
energy
poverty
persists
in
Tanzania,
with
77%
of
the
population
not
having
access
to
electricity.
A
combination
high
solar
radiation
and
slow
extension
national
grid
has
raised
off-grid
PV
based
mini-grids
as
a
potential
solution.
In
this
paper,
novel
Technological
Innovation
System
(TIS)
function
approach
is
used
analyze
positive
negative
trends
mini-grid
diffusion
country.
This
framework,
adapted
for
Global
South
context,
considers
key
dynamic
processes
(functions)
structural
components
(actors
institutions)
that
are
considered
essential
technological
systems,
along
general
institutional
infrastructure,
informal
institutions
other
contextual
factors
may
influence
development
implementation
systems.
Based
on
semi-structured
interviews
stakeholders
secondary
data,
paper
identified
several
functions
such
market
formation,
entrepreneurial
activities
guidance
search.
The
demonstrates
clear
link
between
worsening
conditions
changes
result
new
political
direction
sector
followed
2015
presidential
election
Tanzania.
Mathematical and Computational Applications,
Год журнала:
2024,
Номер
29(1), С. 4 - 4
Опубликована: Янв. 10, 2024
Small-scale
photovoltaic
(PV)
systems
are
essential
for
the
local
energy
supply.
The
most
commonly
known
PV
cell
is
configured
as
a
large-area
p–n
junction
made
from
silicon,
but
today
include
cells
of
various
manufactures
and
origins.
dependence
relationship
between
current
voltage
nonlinear,
current–voltage
characteristic.
values
characteristic
equation’s
parameters
define
working
regime
cell.
In
present
work,
parameter
iteratively
obtained
by
nonlinear
regression
an
explicit
model.
acceleration
convergence
these
studied
approximation
simplifying
iterative
calculation
in
case
perpendicular
offsets.
new
estimations
allow
much
faster
estimate
maximum
power
point
system.
Applied Sciences,
Год журнала:
2023,
Номер
13(22), С. 12133 - 12133
Опубликована: Ноя. 8, 2023
The
need
to
modernize
existing
district
heating
systems
is
due
increased
requirements
for
their
flexibility,
energy
efficiency,
and
environmental
friendliness.
technical
policy
on
pursued
in
different
countries
centers
the
listed
goals
takes
account
of
historical,
climatic,
regional
features
resource,
technology,
economic
availability
various
thermal
sources.
This
study
aims
analyze
methods
designed
improve
friendliness
systems.
focus
system,
which
provides
hot
water
supply
consumers
consists
types
work
shows
possibility
system
transition
from
third
generation
fourth
one,
differ
level
intellectualization.
establishment
an
intelligent
control
will
ensure
interaction
heat
sources,
but
this
a
separate
strand
research.
In
study,
model
methodology
were
developed
optimize
structure
sources
operating
conditions
when
covering
load
curve
territory
with
predominance
household
consumers.
Gas-reciprocating
gas-turbine
cogeneration
plants
are
considered
as
main
whose
efficiency
boosted
through
joint
operation
electric
boilers,
storage
systems,
low-grade
absorption
chillers.
primary
emphasis
assessment
benefit
be
gained
by
using
factor
enhancing
investment
appeal
findings
suggest
that
next
impossible
without
changing
institutional
environment,
strengthening
role
active
consumers,
introducing
E3S Web of Conferences,
Год журнала:
2024,
Номер
584, С. 01017 - 01017
Опубликована: Янв. 1, 2024
Frequency
control
is
one
of
the
most
important
tasks
in
electric
power
systems.
However,
as
a
result
ongoing
introduction
into
modern
systems
inertia-free
generating
facilities
based
on
converters,
mainly
renewable
energy
sources,
this
task
becoming
more
complex.
This
specificity
especially
severe
microgrids,
which
are
characterized
by
significant
frequency
changes.
An
effective
way
to
solve
such
problem
use
storage
(ESS)
with
grid-forming
converters.
For
purpose,
paper
develops
new
structure
algorithm
current-controlled
virtual
synchronous
generator
(CC-VSG),
damping
oscillations
implemented
via
feedforward
controller.
Also,
proportional-integral
loop
added
CC-VSG
state
charge
ESS.
A
methodology
separation
bandwidths
different
loops
proposed
for
tuning
CC-VSG.
To
confirm
obtained
results,
time-domain
simulation
microgrid
ESS
using
PSCAD
software
was
performed.
