Energies
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Multiple Objective Compromised Method for Power Management in Virtual Power Plants
Energies - Tập 4 Số 4 - Trang 700-716
In practical optimization, a priority requirement for different objectives of
multiple objective optimization problems should be considered. In this paper,
the distributed power management of a Virtual Power Plant (VPP) with priority
requirement is optimized by the compromised method. The operation optimization
model of VPP is formulated as a fuzzy multiple objective optimization problem
consideri...
False Shades of Green: The Case of Brazilian Amazonian Hydropower
Energies - Tập 7 Số 9 - Trang 6063-6082
The Federal Government of Brazil has ambitious plans to build a system of 58
additional hydroelectric dams in the Brazilian Amazon, with Hundreds of
additional dams planned for other countries in the watershed. Although
hydropower is often billed as clean energy, we argue that the environmental
impacts of this project are likely to be large, and will result in substantial
loss of biodiversity, as ...
Experimental Study on Influence of Pitch Motion on the Wake of a Floating Wind Turbine Model
Energies - Tập 7 Số 4 - Trang 1954-1985
Wind tunnel experiments were performed, where the development of the wake of a
model wind turbine was measured using stereo Particle Image Velocimetry to
observe the influence of platform pitch motion. The wakes of a classical bottom
fixed turbine and a streamwise oscillating turbine are compared. Results
indicate that platform pitch creates an upward shift in all components of the
flow and their ...
Turbulent Flow Inside and Above a Wind Farm: A Wind-Tunnel Study
Energies - Tập 4 Số 11 - Trang 1916-1936
Wind-tunnel experiments were carried out to better understand boundary layer
effects on the flow pattern inside and above a model wind farm under thermally
neutral conditions. Cross-wire anemometry was used to characterize the turbulent
flow structure at different locations around a 10 by 3 array of model wind
turbines aligned with the mean flow and arranged in two different layouts
(inter-turbine...
Hydrogen-Rich Syngas and Biochar Production by Non-Catalytic Valorization of Date Palm Seeds
Energies - Tập 15 Số 8 - Trang 2727
Pyrolysis has been demonstrated to be a highly effective thermochemical process
for converting complex biomaterials into biochar and syngas rich in hydrogen.
The pyrolysis of mixed date palm seeds from Saudi Arabia was conducted using a
fixed-bed pyrolyzer that was custom made for the purpose. The influence of the
pyrolysis temperature (200–1000 °C) on the various physicochemical parameters of
the...
Analysis of the Physical Properties of Hydrate Sediments Recovered from the Pearl River Mouth Basin in the South China Sea: Preliminary Investigation for Gas Hydrate Exploitation
Energies - Tập 10 Số 4 - Trang 531
Laboratory based research on the physical properties of gas hydrate hosting
sediment matrix was carried out on the non-pressurized hydrate-bearing sediment
samples from the Chinese Guangzhou Marine Geological Survey 2 (GMGS2) drilling
expedition in the Pearl River Mouth (PRM) basin. Measurements of index
properties, surface characteristics, and thermal and mechanical properties were
performed on t...
Extreme Quantiles Dynamic Line Rating Forecasts and Application on Network Operation
Energies - Tập 13 Số 12 - Trang 3090 - 2020
This paper presents a study on dynamic line rating (DLR) forecasting procedure
aimed at developing a new methodology able to forecast future ampacity values
for rare and extreme events. This is motivated by the belief that to apply DLR
network operators must be able to forecast their values and this must be based
on conservative approaches able to guarantee the safe operation of the network.
The p...
Environmental Impacts and Costs of Hydrotreated Vegetable Oils, Transesterified Lipids and Woody BTL—A Review
Energies - Tập 4 Số 6 - Trang 845-877
This article reviews and compares assessments of three biodiesel fuels: (1)
transesterified lipids, (2) hydrotreated vegetable oils (HVO), and (3) woody
biomass-to-liquid (BTL) Fischer-Tropsch diesel and selected feedstock options.
The article attempts to rank the environmental performance and costs of fuel and
feedstock combinations. Due to inter-study differences in goal and study
assumptions, t...
Review on Deep Neural Networks Applied to Low-Frequency NILM
Energies - Tập 14 Số 9 - Trang 2390
This paper reviews non-intrusive load monitoring (NILM) approaches that employ
deep neural networks to disaggregate appliances from low frequency data, i.e.,
data with sampling rates lower than the AC base frequency. The overall purpose
of this review is, firstly, to gain an overview on the state of the research up
to November 2020, and secondly, to identify worthwhile open research topics.
Accord...
Algal Biofuels: Current Status and Key Challenges
Energies - Tập 12 Số 10 - Trang 1920
The current fossil fuel reserves are not sufficient to meet the increasing
demand and very soon will become exhausted. Pollution, global warming, and
inflated oil prices have led the quest for renewable energy sources. Algal
biofuels represent a potential source of renewable energy. Algae, as the third
generation feedstock, are suitable for biodiesel and bioethanol production due
to their quick gr...
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