The
use
of
pumps
operating
as
turbines
(PATs)
offers
the
possibility
to
increase
sustainability
water
and
energy
systems,
by
recovering
excess
that
would
be
otherwise
lost
in
system’s
normal
operation.
While
on-grid
applications
there
are
many
research
works
implementations
PATs,
is
still
limited
for
optimization
efficiency
stability
off-grid
systems.
This
work
contributes
development
stable
DC
systems
based
on
optimizing
analysing
different
electric
loads.
To
further
usefulness
this
work,
we
consider
a
self-excited
induction
generator
(SEIG)
coupled
PAT.
In
context,
methodology
proposed,
multiphysics
interaction
between
hydraulic,
mechanical
subsystems,
define
PAT-SEIG
operational
area
maximize
conversion
efficiency,
guarantee
output
quantities
when
system.
addition,
an
analytical
model
proposed
allow
project
system
managers
best
hydraulic
machines,
electronic
equipment,
all
control
elements
conversion,
within
target
limits.
develop
verify
our
methodology,
two
micro
PAT-SEIG-AC/DC
setups
were
implemented
laboratory
under
typical
conditions.
solution
proved
resilient
variable
load
regime.
maximum
can
adapted
using
values
capacitors
range
components
(input
voltage
DC/DC
converter
input
current
SEIG).
Considering
nominal
efficiencies
components,
p.u.
both
0.7
0.8
Energy,
Год журнала:
2023,
Номер
282, С. 128366 - 128366
Опубликована: Июль 8, 2023
In
a
historical
context
where
renewable
energy
is
increasingly
being
adopted,
the
installation
of
Pumps
as
Turbines
(PaTs)
in
Water
Distribution
Networks
(WDNs)
gaining
relevance
scientific
community.
The
selection
PaT
to
be
installed
WDN
complex,
requiring
trade-off
between
technical
and
economic
aspects.
This
paper
presents
methodology
for
guiding
based
on
characteristics
WDN,
predicting
its
characteristic
curves,
estimating
daily
power
generation.
proposed
algorithm
has
been
automated
computer
tool
called
PaT-ID.
innovative
aspects
this
concern
general
applicability
any
machine
catalogue.
It
automatically
selects
most
useful
considering
input
water
demand
trend
hydraulic
head
available
PaT.
addition,
decides
series
or
parallel
layouts
if
necessary.
Finally,
absence
data,
PaT-ID
provides
first-level
analysis
define
potential
site
production,
simulating
flow
rate
data.
code
validated
with
two
case
studies
analysed
previous
works.
Energy Strategy Reviews,
Год журнала:
2024,
Номер
54, С. 101437 - 101437
Опубликована: Июнь 3, 2024
This
paper
delves
into
identifying
the
optimal
scenario
for
implementation
of
micro-turbines,
specifically
Pump-as-Turbines
(PaTs),
in
a
water
distribution
network
(WDN)
by
achieving
highest
consensus
among
involved
stakeholders.
Utilising
simulations-optimisation
model,
best
location,
type,
and
operation
hours
micro-turbines
were
selected
within
case
study
WDN.
The
objective
was
to
maximise
generated
energy,
while
maintaining
standard
hydraulic
conditions
A
total
84
scenarios
developed,
considering
number
installed
turbines,
allocation
pricing
schemes.
explore
possibilities
allocating
electricity
company,
national
grid,
cryptocurrency
mining,
or
electric
car
charging.
Evaluation
involves
36
criteria,
identifies
18
stakeholders
energy
management
study.
Stakeholder
utility
with
respect
criteria
determined
through
interviews,
weights
each
stakeholder
assigned
based
on
previous
studies.
computed
matrix,
ranked
accordingly,
revealing
that
involving
generation
five
turbines
sold
grid
at
twice
current
price
garnered
support.
Energy Strategy Reviews,
Год журнала:
2023,
Номер
49, С. 101158 - 101158
Опубликована: Авг. 12, 2023
The
chance
of
success
in
implementing
a
new
project
water
distribution
network
(WDN)
significantly
depends
on
the
behaviour
involved
stakeholders.
In
this
paper,
feasibility
installing
micro-turbines
WDNs
for
generating
hydro-power
energy
is
studied
from
stakeholders'
perspective.
Stakeholders'
analysis
(SA)
and
social
(SNA)
are
performed
to
methodically
recognise
environment
relationships
among
18
stakeholders
at
local,
regional,
national
levels
were
identified
their
representatives
interviewed.
SA,
power,
interest,
access
information,
satisfaction
current
condition
system
evaluated
each
stakeholder.
Water
Wastewater
Company
Ministry
Energy
found
as
with
highest
power
interest.
Unexpectedly,
Regional
Electricity
was
discovered
medium
low
information.
SNA,
cooperative
non-cooperative
between
analysed
an
assessment
made
role
stakeholder
network,
through
four
centrality
metrics.
correlation
SA
SNA
results
suggests
that
factors
could
be
estimated
using
Energies,
Год журнала:
2024,
Номер
17(16), С. 4078 - 4078
Опубликована: Авг. 16, 2024
A
typical
wind
system
captures
energy
and
converts
it
into
electricity,
which
is
then
converted
to
DC
for
battery
storage
using
an
AC/DC
converter;
inverter
supplies
AC
electricity
at
the
grid
frequency.
However,
this
solution
involves
losses
in
electronic
components
incurs
costs
environmental
impacts
associated
with
storage.
To
address
these
issues,
a
different
layout
configuration
considered,
where
duties
are
assumed
by
hydro
employing
reversible
hydraulic
pump
(referred
as
Pump
Turbine).
This
utilises
elevated
reservoir
connected
Turbine
compensate
fluctuations
load;
approach
offers
lower
costs,
longer
lifespan,
reduced
maintenance,
smaller
waste
management
cost.
study
focuses
on
comprehensive
sensitivity
analysis
of
new
power
layout,
considering
multiple
objectives.
Specifically,
targets
net
change
mass
water
(potential
energy)
stored
pumped
system,
captured
energy,
torque
provided
turbine
mode.
On
other
hand,
design
variables
represented
Turbine-specific
speed,
gearbox
ratio,
head.
assess
how
solutions
affected
random
changes
speed
external
load,
considers
multi-objective
optimisation
problem
showing
both
load
stochastic
contribution.
Water,
Год журнала:
2023,
Номер
15(23), С. 4123 - 4123
Опубликована: Ноя. 28, 2023
A
pump
as
turbine
(PAT)
can
be
a
cost-effective
and
versatile
solution
to
recover
energy
in
several
fields
of
application.
However,
its
optimal
exploitation
requires
reliable
general
methodology
for
selecting
the
turbomachine.
To
this
purpose,
paper
presents
validates
comprehensive
that
identifies
best
turbomachine
(i.e.,
one
maximizes
recovered
energy)
by
considering
two
hydraulic
sites
forty-five
PATs.
In
both
sites,
correctly
PAT,
which
allows
recovery
up
45%
available
energy.
further
investigate
PAT
potential,
an
additional
layout
installation,
comprises
PATs
installed
parallel,
is
also
considered.
The
operation
optimally
scheduled
maximize
recovery.
As
result,
pair
almost
50%
An
in-depth
analysis
about
operating
range,
causes
wasted
energy,
timeframe
efficiency)
reveals
installation
actually
recommended
just
considered
sites.
