International Journal of Hydrogen Energy, Journal Year: 2024, Volume and Issue: 100, P. 658 - 667
Published: Dec. 24, 2024
Language: Английский
Cogent Engineering, Journal Year: 2024, Volume and Issue: 11(1)
Published: April 13, 2024
In recent times, there has been a growing focus on multi-micro-grids (MMGs) system, owing to its well-suited structures for efficiently accommodating large-scale integration of distributed energy resources (DER). This attention is driven by the system's cost-effectiveness, enhanced efficiency, stability, and reliability performance, achieved through collaborative exchange power flow among individual micro-grids (MGs) main grid. Fundamental strategies attaining optimal sharing involve sizing MGs implementation an Energy Management System (EMS). These play crucial role in addressing uncertainties associated with intermittent generation, load fluctuations market dynamics. paper offers review grid-connected MMG topologies, EMS structures, coordination methods current optimization approaches designed meet objectives. To address inherent volatilities, introduces various uncertainty quantification techniques along challenges. Additionally, it suggests future directions, emphasizing intelligent predictive modeling handle uncertainties, as well recommending incorporation storage systems (ESSs) align emerging trends.
Language: Английский
Citations
6
Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)
Published: July 5, 2024
Abstract This study examined the optimal size of an autonomous hybrid renewable energy system (HRES) for a residential application in Buea, located southwest region Cameroon. Two systems, PV-Battery and PV-Battery-Diesel, have been evaluated order to determine which was better option. The goal this research propose dependable, low-cost power source as alternative unreliable highly unstable electricity grid Buea. decision criterion proposed HRES cost (COE), while system’s dependability constraint loss supply probability (LPSP). crayfish optimization algorithm (COA) used optimize component sizes HRES, results were contrasted those obtained from whale (WOA), sine cosine (SCA), grasshopper (GOA). MATLAB software model components, criteria, constraints single-objective problem. after simulation LPSP less than 1% showed that COA outperformed other three techniques, regardless configuration. Indeed, COE using 0.06%, 0.12%, lower provided by WOA, SCA, GOA algorithms, respectively, Likewise, PV-Battery-Diesel configuration, 0.065%, 0.13%, 0.39% respectively. A comparative analysis outcomes two configurations indicated configuration exhibited 4.32% comparison Finally, impact reduction on assessed decrease resulted increase owing nominal capacity diesel generator.
Language: Английский
Citations
6
Energy, Journal Year: 2024, Volume and Issue: 304, P. 131910 - 131910
Published: June 5, 2024
Language: Английский
Citations
4
IEEE Access, Journal Year: 2024, Volume and Issue: 12, P. 98393 - 98406
Published: Jan. 1, 2024
During
the
winter
heating
period,
accommodation
of
wind
and
photovoltaic
(PV)
power
is
limited
due
to
prioritized
scheduling
combined
heat
(CHP)
systems
meet
load
demand
users,
which
indirectly
increases
carbon
emissions
(CE).
Due
robust
peak
shaving
energy
storage
capabilities
pumped
hydropower
(PSH),
PSH
tiered
trading
can
be
employed
address
these
issues.
However,
there
are
scarce
reports
on
research
exploring
integration
into
CHP
systems.
To
fill
technology
gap,
we
propose
a
low-carbon
optimal
method
that
integrates
hydropower-wind-PV-thermal-battery
(HWPTB)
with
CHP.
The
model
for
coordinated
multi-energy
complementarity
HWPTB
developed
electric
users.
proposed
work
validated
by
numerical
simulation,
compared
traditional
without
considering
trading,
PV
curtailment
rates
reduced
7.17%
6.77%,
respectively,
operation
cost
also
43.6%,
CE
-4163.3
(
Language: Английский
Citations
4
Cleaner Energy Systems, Journal Year: 2024, Volume and Issue: unknown, P. 100157 - 100157
Published: Oct. 1, 2024
Language: Английский
Citations
4
Energy Geoscience, Journal Year: 2025, Volume and Issue: unknown, P. 100400 - 100400
Published: March 1, 2025
Language: Английский
Citations
0
Sustainability, Journal Year: 2023, Volume and Issue: 15(15), P. 11735 - 11735
Published: July 30, 2023
Access to cheap, clean energy has a significant impact on country’s ability develop sustainably. Fossil fuels have major global warming and are currently becoming less profitable when used generate power. In order replace the diesel generators that connected university of Debre Markos’ electrical distribution network with hybrid renewable sources, this study presents optimization techno-economic feasibility analyses proposed systems their overall cost in stand-alone grid-connected modes operation. Metaheuristic techniques such as enhanced whale algorithm (EWOA), (WOA), African vultures’ (AVOA) for optimal sizing sources according financial reliability evaluation parameters. After developing MATLAB program size systems, total current (TCC) was calculated using aforementioned metaheuristic (i.e., EWOA, WOA, AVOA). mode operation, TCC 4.507 × 106 EUR, 4.515 4.538 respectively, whereas mode, 4.817 4.868 4.885 respectively. EWOA outcomes lowered by 0.18% WOA 0.69% AVOA, 1.05% 1.39% AVOA operational mode. addition, compared different parameters net present (NPC) (EUR), (COE) (EUR/kWh), levelized (LCOE) expected not supplied (EENS), loss power supply probability (LPSP), index (IR), load (LOLP), expectation (LOLE), efficiently reduced while fulfilling constraints imposed objective function. According result comparison, outperformed competition terms costs improvements.
Language: Английский
Citations
9
Sustainability, Journal Year: 2024, Volume and Issue: 16(4), P. 1357 - 1357
Published: Feb. 6, 2024
In this study, the technical and economic feasibility of employing pumped hydroelectric energy storage (PHES) systems at potential locations in Jordan is investigated. each location, a 1 MWp off-grid photovoltaic (PV) system was installed near dam reservoir to drive pumps that transfer water up an upper certain distance elevation. PVsyst (Version 7.3.4) implemented simulate flow rate location. The presumed back into through turbine during peak hours night power MW load. Based on volume reservoir, generated estimated using HOMER Pro® 3.15.3), exported grid (when from more than required by driven load) also determined. It worth mentioning scaling size PV hydropower straightforward approach considering modular nature such systems. However, quantity allowed be main determinant for PHES system. results show these implement great. addition, study conducted estimate how much CO2 emissions were reduced generating renewable compared same amount fossil fuels. These increase mix Jordan, stabilize grid, balance loads, especially periods. More importantly, contribute making sector sustainable.
Language: Английский
Citations
3
Published: Jan. 1, 2025
Language: Английский
Citations
0
Applied Sciences, Journal Year: 2024, Volume and Issue: 14(14), P. 6307 - 6307
Published: July 19, 2024
As an advanced energy storage technology, the compressed CO2 system (CCES) has been widely studied for its advantages of high efficiency and low investment cost. However, current literature mainly focused on TC-CCES SC-CCES, which operate in high-pressure conditions, increasing costs bringing operation risks. Meanwhile, some studies based phase-change also have had disadvantages extra necessity heat or cooling sources. To overcome above problems, this paper proposes innovative system. During charge process, molten salt water are used to store with a smaller temperature difference exchangers, is reserved liquid form. discharge throttle expansion applied realize evaporation at room temperature, absorbs improve power capacity turbine efficiency. The thermodynamic exergoeconomic performed firstly by using MATLAB. Then, parametric study efficiency, unit product cost, exergy destruction analyzed. results show that can be improved lifting pressure as well compressor isentropic efficiencies, optimal point. cost reduced decreasing while both points. Finally, optimization two performances NSGA-II, they reach 75.30% 41.17 $/GJ, respectively. Moreover, obviously higher than other technologies, indicating great advantage proposed This provides research method new type large-scale
Language: Английский
Citations
2