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Virtual Transmission Solution Based on Battery Energy Storage Systems to Boost Transmission Capacity

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Journal of Modern Power Systems and Clean Energy 2024年第2期12卷 466-474页

作者： Matías Agüero Jaime Peralta Eugenio Quintana Victor Velar Anton Stepanov Hossein Ashourian Jean Mahseredjian Roberto Cárdenas Coordinador Eléctrico Nacional SantiagoChile PGSTech Montreal Canada ecole Polytechnique de montréal Montréal Canada University of Chile Santiago Chile IEEE

The increasing penetration of variable renewable energy(VRE)generation along with the decommissioning of conventional power plants in Chile,has raised several operational challenges in the Chilean National Power Grid(NPG),including transmission congestion and VRE *** mitigate these limitations,an innovative virtual transmission solution based on battery energy storage systems(BESSs),known as grid booster(GB),has been proposed to increase the capacity of the main 500 kV corridor of the *** paper analyzes the dynamic performance of the GB using a wide-area electromagnetic transient(EMT)model of the *** GB project,composed of two 500 MVA BESS units at each extreme of the 500 kV corridor,allows increasing the transmission capacity for 15 min during N-1 contingencies,overcoming transmission limitations under normal operation conditions while maintaining system stability during *** dynamic behavior of the GB is also analyzed to control power flow as well as voltage *** results show that the GB is an effective solution to allow greater penetration of VRE generation while maintaining system stability in the NPG.

关键词： Battery energy storage system(BESS) grid booster transient stability voltage stability electromagnetic transient(EMT)

Strategies to achieve effective nitrogen activation

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Carbon Energy 2024年第5期6卷 137-163页

作者： Bin Chang Huabin Zhang Shuhui Sun Gaixia Zhang KAUST Catalysis Center(KCC) King Abdullah University of Science and Technology(KAUST)ThuwalKingdom of Saudi Arabia Institut National de la Recherche Scientifique(INRS) CentreÉnergie Matériaux TélécommunicationsVarennesQuébecCanada department of Electrical Engineering École de Technologie Supérieure(ÉTS)MontréalQuébecCanada

Ammonia serves as a crucial chemical raw material and hydrogen energy *** electrocatalytic nitrogen reduction reaction(NRR),powered by renewable energy,has attracted tremendous interest during the past few *** some achievements have been revealed in aqueous NRR,significant challenges have also been *** activity and selectivity are fundamentally limited by nitrogen activation and competitive hydrogen *** review focuses on the hurdles of nitrogen activation and delves into complementary strategies,including materials design and system optimization(reactor,electrolyte,and mediator).Then,it introduces advanced interdisciplinary technologies that have recently emerged for nitrogen activation using high-energy physics such as plasma and *** a better understanding of the corresponding reaction mechanisms in the coming years,these technologies have the potential to be extended in further *** review provides further insight into the reaction mechanisms of selectivity and stability of different reaction *** then recommend a rigorous and detailed protocol for investigating NRR performance and also highlight several potential research directions in this exciting field,coupling with advanced interdisciplinary applications,in situ/operando characterizations,and theoretical calculations.

关键词： activation via mediators catalyst optimization electrochemical nitrogen fixation high-energy activation of nitrogen nitrogen

Long-wave instabilities

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Science China Mathematics 2024年第8期67卷 1761-1776页

作者： Dongfen Bian Emmanuel Grenier School of Mathematics and Statistics Beijing Institute of TechnologyBeijing 100081China Unité de Mathématiques Pures et Appliquées CNRS UMR 5669Ecole Normale Supérieure de LyonLyon 69007France

This paper aims to give a detailed presentation of long-wave instabilities of shear layers for NavierStokes equations,and in particular to give a simple and easy-to-read presentation of the study of the OrrSommerfeld equation and to detail the analysis of its *** these analyses,we prove the existence of long-wave instabilities in the cases of slowly rotating fuids,slightly compressible fuids,or fuids with Navier boundary conditions,under smallness conditions.

关键词： Navier-Stokes equations boundary layers Prandtl equations

Fractional synergetic tracking control for robot manipulator

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Journal of Control and decision 2024年第1期11卷 139-152页

作者： Asma Saif Raouf Fareh Saif Sinan Maamar Bettayeb department of Electrical Engineering University of SharjahSharjahUAE department of Electrical Engineering École de technologie supérieureMontrealCanada CEIES King Abdulaziz UniversityJeddahSaudi Arabia

This work takes advantage of synergetic control theory and fractional calculus to develop and propose fractional synergetic control(FSC)strategy for Four degrees of Freedom(4-DOF)robot *** proposed fractional synergetic control is designed to track a joint space as well as workspace desired *** calculus gives more flexibility in the design since it has a wider stability *** to that,as stated in the literature,compared to a similar approach such as sliding mode control,the synergetic control approach converges faster to the equilibrium point,without chattering with a fast *** paper proposes a new control strategy that takes advantage of fractional calculus and synergetic control *** proposed control strategy is tested experimentally on a 4-DOF manipulator to study the performance of the proposed control *** stability of the closed-loop system is proved using the Lyapunov *** experimental results have shown that the proposed FSC design has achieved a good tracking performance.

关键词： Synergetic control robust control robot manipulator fractional controller

Dynamic of Scalar Bosons in Aharonov-Bohm Magnetic Field

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Journal of Applied Mathematics and Physics 2024年第1期12卷 268-276页

作者： Frédéric D. Y. Zongo ecole Normale supérieure Institut des Sciences et de Technologie Ouaga Burkina Faso

We study the dynamic of scalar bosons in the presence of Aharonov-Bohm magnetic field. First, we give the differential equation that governs this dynamic. Secondly, we use variational techniques to show that the following Schrödinger-Newton equation: , where A is an Aharonov-Bohm magnetic potential, has a unique ground-state solution.

关键词： Scalar Boson Aharonov-Bohm Magnetic Field Schrödinger-Newton Equation Ground-State Solution

Electrochemical Activation-Induced Structural Transformation in Ni（OH）2/Ti3C2Tx/NF Systems with Enhanced Electrochemical Performance for Hybrid supercapacitors

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Energy & Environmental Materials 2024年第4期7卷 277-284页

作者： Chuming Xu Lu Dai Yiming Zhao Shuang Li Yapan Wu Xueqian Wu Gaixia Zhang Shuhui Sun Dongsheng Li College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials China Three Gorges University department of Electrical Engineering école de Technologie Supérieure (éTS) Institut National de la Recherche Scientifique (INRS) Centre énergie Matériaux Télécommunications

Exploring a novel strategy for large-scale production of battery-type Ni（OH）2-based composites,with excellent capacitive performance,is still greatly ***,we developed a facile and cost-effective strategy to in situ grow a layer of Ni（OH）2/Ti3C2Txcomposite on the nickel foam（NF） collector,where Ti3C2Txis not only a conductive component,but also a catalyst that accelerates the oxidation of NF to Ni（OH）2.

关键词： electrochemical activation hybrid supercapacitors Ni(OH)2 Ti3C2Tx

The Impact of the Inclusion of MgO Nano-Fillers in a Polyethylene Matrix on Dielectric Strength and Resistance to Partial Discharges

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Open Journal of Applied Sciences 2024年第3期14卷 626-634页

作者： Virginie Griseri Dominique Mary David Malec Eric David Laboratoire Plasma et Conversion d’énergie Université de Toulouse CNRS UPS INPT Route de Narbonne Toulouse France É cole de Technologie Supérieure de Montréal Rue Notre-Dame Ouest Montréal Canada

One commonly used strategy to enhance polymers specific properties such as the resistance to partial discharges erosion is the incorporation into the polymeric matrix of inorganic micro or nanoparticles. This study focused on the dielectric properties of Low-density Polyethylene (LDPE) filled with nano-sized Magnesium Oxide (MgO) particles compounded by thermo-mechanical process and one of the purposes was to establish appropriate processing parameters in order to reach the desired dielectric properties. LDPE was used as a matrix and was reinforced by MgO particles having a nominal average size of 30 nm. The MgO nanoparticles were treated with a silane coupling agent (3-Glycidyloxypropyl Trimethoxysilane). The samples were initially prepared in a melt-mixing chamber with a MgO content of 1% wt. These pre-mixed samples were further treated by the means of thermo-mechanical mixing in a conical co-rotating twin-screw extruder in order to improve the dispersion and distribution of the MgO particles. In this report, both lifetime under a PD activity and AC dielectric strength of pure and nano-filled LDPE samples have been measured and compared. Nano-filled LDPE samples were found to exhibit an improve lifetime, without any detrimental impact on their short-term dielectric strength. This suggests that nano-filled LDPE may be for electric applications for which the dielectric materials may be exposed to partial discharge activities. This is significant result for the use of MgO-reinforced PE as an insulating material for HV cables since the resistance to PD is closely related to treeing resistance which is the main electrical degradation mechanism that leads to failure for shielded extruded power cables.

关键词： Low density Polyethylene MgO Nanofillers Dielectric Strength Partial Discharges Resistance

Advancements on metal oxide semiconductor photocatalysts in photo-electrochemical conversion of carbon dioxide into fuels and other useful products

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Frontiers in Energy 2024年第2期18卷 187-205页

作者： Jai PRAKASH Zhangsen CHEN Shakshi SAINI Gaixia ZHANG Shuhui SUN department of Chemistry National Institute of Technology HamirpurHamirpur 177005India Institut National de la Recherche Scientifique(INRS) Centre Énergie Matériaux TélécommunicationsVarennes J3X 1P7Canada department of Chemistry Indian Institute of Technology MandiHimachal PradeshIndia department of Electrical Engineering École de Technologie SupérieureMontréal H3C 1K3Canada

Due to its fascinating and tunable optoelectronic properties,semiconductor nanomaterials are the best choices for multidisciplinary ***,the use of semiconductor photocatalysts is one of the promising ways to harness solar energy for useful applications in the field of energy and *** recent years,metal oxide-based tailored semiconductor photocatalysts have extensively been used for photocatalytic conversion of carbon dioxide(CO_(2))into fuels and other useful products utilizing solar *** is very significant not only from renewable energy consumption but also from reducing global warming point of *** current research activities are promising for a better future of *** present mini-review is focused on recent developments(2–3 years)in metal oxide semiconductor hybrid photocatalysts-based photo-electrochemical conversion of CO_(2)into fuels and other useful ***,general mechanism of photo-electrochemical conversion of CO_(2)into fuels or other useful products has been ***,various metal oxide-based emerging hybrid photocatalysts including tailoring of their morphological,compositional,and optoelectronic properties have been discussed with emphasis on their role in enhancing photoelectrochemical ***,mechanism of their photo-electrochemical reactions and applications in CO_(2)conversion into fuels/other useful products have been ***,challenges and future prospects have been discussed followed by a summary.

关键词： metal-oxide semiconductors nanohybrid photocatalysts photo-electrochemical CO_(2)conversion tailoring morphology fuels challenges and future prospects

The TELOMERE REPEAT BINDING proteins TRB4 and TRB5 function as transcriptional activators of PRC2-controlled genes to regulate plant development

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Plant Communications 2024年第7期5卷 178-199页

作者： Simon Amiard Léa Feit Emmanuel Vanrobays Lauriane Simon Samuel Le Goff Loriane Loizeau Léa Wolff Falk Butter Clara Bourbousse Fredy Barneche Christophe Tatout aline V.Probst iGReD CNRSInsermUniversite´Clermont Auvergne63000 Clermont-FerrandFrance Institut de biologie de I’ecole normale supe´rieure(IBENS) Ecole normale supe´rieureCNRSINSERMUniversite´PSLParisFrance Institute of Molecular Biology 55128 MainzGermany

Plant-specific transcriptional regulators called TELOMERE REPEAT BINDING proteins(TRBs)combine two DNA-binding domains,the GH1 domain,which binds to linker DNA and is shared with H1 histones,and the Myb/SANT domain,which specifically recognizes the telobox DNA-binding site ***1,TRB2,and TRB3 proteins recruit Polycomb group complex 2(PRC2)to deposit H3K27me3 and JMJ14 to remove H3K4me3 at gene promoters containing telobox motifs to repress ***,we demonstrate that TRB4 and TRB5,two related paralogs belonging to a separate TRB clade conserved in spermatophytes,regulate the transcription of several hundred genes involved in developmental responses to environmental ***4 binds to several thousand sites in the genome,mainly at transcription start sites and promoter regions of transcriptionally active and H3K4me3-marked genes,but,unlike TRB1,it is not enriched at H3K27me3-marked gene ***,TRB4 can physically interact with the catalytic components of PRC2,SWINGER,and CURLY LEAF(CLF).Unexpectedly,we show that TRB4 and TRB5 are required for distinctive phenotypic traits observed in clf mutant plants and thus function as transcriptional activators of several hundred CLF-controlled genes,including key flowering *** further demonstrate that TRB4 shares multiple target genes with TRB1 and physically and genetically interacts with members of both TRB ***,these results reveal that TRB proteins engage in both positive and negative interactions with other members of the family to regulate plant development through both PRC2-dependent and-independent mechanisms.

关键词： chromatin TRB proteins transcriptional regulation PRC2 plant development