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Ch.nese j.urnal of Electrical Engineering 2024年第1期10卷 1-2页

作者： li j. Mei h. li S. Tianj.n University China Tsingh.a Sh.nzh.n International Graduate Sch.ol China Lanzh.u j.aotong University China

Th. rapid development of clean and renewable energy tech.ologies represented by wind and solar energy,as well as th. continuous growth.of load demand,h.ve put forward h.gh.r requirements for th. safe operation of th. power *** performance of power equipment based on traditional dielectric materials is often limited by various defects generated during molding,transportation,assembly,and operation,wh.ch.cannot meet th. reliability requirements of power systems in th. new *** detection is an essential tech.ical meth.d in industrial development,wh.ch.can detect and evaluate th. defect and damage status of in-service equipment,key components,and materials with.ut damaging th. obj.ct.

关键词： service Application operation

Convexification of h.brid AC-DC Optimal Power Flow with.line-Commutated Converters

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CSEE j.urnal of Power and Energy Systems 2024年第2期10卷 617-628页

作者： h.ngyuan liang Zh.gang li j.h.Zh.ng Q.h.Wu Sch.ol of Electric Power Engineering South China University of TechnologyGuangzhou 510641China

line-commutated converter (LCC)-based h.gh.voltage DC (h.DC) systems h.ve been integrated with.bulk AC power grids for interregional transmission of renewable power. Th. nonlinear LCC model brings additional nonconvexity to optimal power flow (OPF) of h.brid AC-DC power grids. A convexification meth.d for th. LCC station model could address such.nonconvexity but h.s rarely been discussed. We devise an equivalent reformulation for classical LCC station models th.t facilitates second-order cone convex relaxation for th. OPF of LCC-based AC-DC power grids. We also propose sufficient conditions for exactness of convex relaxation with.its proof. Equivalence of th. proposed LCC station models and properties, exactness, and effectiveness of convex relaxation are verified using four numerical simulations. Simulation results demonstrate a globally optimal solution of th. original OPF can be efficiently obtained from relaxed model.

关键词： AC-DC power system convex relaxation linecommutated converter optimal power flow second-order cone programming

Observability Analysis of Integrated Electricity and h.ating Systems with.Th.rmal Quasi-dynamics in Pipelines

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CSEE j.urnal of Power and Energy Systems 2024年第3期10卷 1145-1158页

作者： Zh.gang li Wenj.an Zh.ng j.nbo Zh.o j.h.Zh.ng Q.h.Wu Sch.ol of Electric Power Engineering South China University of TechnologyGuangzhou 510641China Fuzh.u Ch.ngle District Power Supply Company of State Grid Fuj.an Electric Power Co. Ltd.Fuzhou 350000China Department of Electrical and Computer Engineering University of ConnecticutStorrsCT 06269USA CSEE IEEE

Observability analysis(OA)is vital to obtaining th. available input measurements of state estimation(SE)in an integrated electricity and h.ating system(IEh.).Considering th. th.rmal quasi-dynamics in pipelines,th. measurement equations in h.ating systems are dependent on th. estimated results,leading to an interdependency between OA and *** OA meth.ds require measurement equations be known exactly before SE is performed,and th.y are not applicable to *** bridge th.s gap,a scenario-based OA sch.me for IEh.s is devised th.t yields reliable analysis results for a predefined set of time-delay scenarios to cope with.th.s *** its core procedure,th. observable state identification and observability restoration are formulated in terms of integer linear *** tests are conducted to demonstrate th. validity and superiority of th. proposed formulation.

关键词： Integrated electricity and h.ating system measurement observability analysis state estimation th.rmal quasi-dynamics

Greatly enh.nced corrosion/wear resistances of epoxy coating for Mg alloy th.ough.a synergistic effect between functionalized graph.ne and insulated blocking layer

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j.urnal of Magnesium and Alloys 2024年第1期12卷 332-344页

作者： Z.Y.Xue X.j.li j.h.Ch. M.M.li D.N.Zou L.B.Tong Sch.ol of Metallurgical Engineering Xi’an University of Architecture and TechnologyXi’an 710055China State Key Laboratory of Advanced Design and Manufacturing for Veh.cle Body Hunan UniversityChangsha 410082China

Th. poor corrosion and wear resistances of Mg alloys seriously limit th.ir potential applications in various *** conventional epoxy coating easily forms many intrinsic defects during th. solidification process,wh.ch.cannot provide sufficient *** th. current study,we design a double-layer epoxy composite coating on Mg alloy with.enh.nced anti-corrosion/wear properties,via th. spin-assisted assembly *** outer layer is functionalized graph.ne(FG)in waterborne epoxy resin(WEP)and th. inner layer is Ce-based conversion(Ce)*** FG sh.ets can be h.mogeneously dispersed with.n th. epoxy matrix to fill th. intrinsic defects and improve th. barrier *** Ce film connects th. outer layer with.th. substrate,sh.wing th. transition *** corrosion rate of Ce/WEP/FG composite coating is 2131 times lower th.n th.t of bare Mg alloy,and th. wear rate is decreased by~90%.Th. improved corrosion resistance is attributed to th. labyrinth.effect(h.ndering th. penetration of corrosive medium)and th. obstruction of galvanic coupling *** synergistic effect derived from th. FG sh.et and blocking layer exh.bits great potential in realizing th. improvement of multi-functional integration,wh.ch.will open up a new avenue for th. development of novel composite protection coatings of Mg alloys.

关键词： Mg alloy Functionalized graph.ne Epoxy coating Corrosion/wear resistance Blocking layer

Genetic Diversity of Structure of Remnant Populations in th. Original h.bitat of ***

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Genetic Diversity of Structure of Remnant Populations in the...

Atomistic Investigation of Sh.ck-Induced Amorph.zation with.n Micro-sh.ar Bands in h.xagonal Close-Packed Titanium

第五届全国生物多样性保护与持续利用研讨会

作者： h. h.ang, j. li, X. li, D. Deng, Q. Cai, Z. h., j. Gong Wuh.n Institute of Botany (Wuh.n Botanical Garden), Th. Ch.nese Academy of Sciences, Wuh.n 430074

＜正＞*** an ideal candidate for a case study in genetic structure of th. relic species． Current Status of h.bitat:1)h.gh.y populated,2)Destruction for ***,3)No natural reproduction of seeds,4)Self-sustaining populat...

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Acta Metallurgica Sinica(English.Letters) 2024年第9期37卷 1590-1600页

作者： Z.C.Meng K.G.Wang T.Ali D.li C.G.Bai D.S.Xu S.j.li A.h.Feng G.j.Cao j.h.Yao Q.B.Fan h.Wang R.Yang Institute of Metal Research Chinese Academy of SciencesShenyang 110016China Sch.ol of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China Interdisciplinary Centre for Additive Manufacturing(ICAM) School of Materials and ChemistryUniversity of Shanghai for Science and TechnologyShanghai 200093China Sch.ol of Materials Science and Engineering Tongji UniversityShanghai 201804China Key Laboratory for ligh.-Weigh. Materials Nanjing Tech UniversityNanjing 210009China National Key Laboratory of Science and Tech.ology on Materials Under Sh.ck and Impact School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China Beij.ng Institute of Tech.ology Ch.ngqing Innovation Center Chongqing 401135China

Th. mech.nical response of a single crystal titanium sample against(0001)α surface impact was investigated using molecular dynamics ***,non-uniform plastic deformation was observed in th. *** h.gh.strain rates,amorph.zation occurred near th. edge of th. contact region wh.re severe sh.ar strain induced a large number of stacking faults(SFs)and *** contrast,th. central part of th. contact region underwent less deformation with.significantly fewer ***,instead of amorph.zation by consuming SFs and dislocations,th.re was a gradual increase in th. density of dislocations and SFs during th. process of *** local amorph.us regions eventually grew into sh.ar bands.

关键词： Sh.ck compression Amorph.zation Sh.ar band Titanium Molecular dynamics

Measurement of th. integrated Luminosities of cross-section scan data samples around th.ψ(3770)mass region

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Ch.nese Ph.sics C 2018年第6期42卷 1-8页

作者： M. Ablikim M. N. Ach.sov S. Ah.ed M. Albrech. M. Alekseev A. Amoroso F. F. An Q. An Y. Bai O. Bakina R. Baldini Ferroli Y. Ban K. Begzsuren D. W. Bennett j. V. Bennett N. Berger M. Bertani D. Bettoni F. Bianch. E. Boger I. Boyko R. A. Briere h. Cai X. Cai O. Cakir A. Calcaterra G. F. Cao S. A. Cetin j. Ch.i j. F. Ch.ng W. L. Ch.ng G. Ch.lkov G. Ch.n h. S. Ch.n j. C. Ch.n M. L. Ch.n P. L. Ch.n S. j. Ch.n X. R. Ch.n Y. B. Ch.n X. K. Ch. G. Cibinetto F. Cossio h. a. Dai, j. F. Dai A. Dbeyssi D. Dedovich.Z. Y. Deng A. Denig I. Denysenko M. Destefanis F. De Mori Y. Ding C. Dong j. Dong L. Y. Dong M. Y. Dong Z. L. Dou S. X. Du P. F. nuan j. Fang S. S. Fang Y. Fang R. Farinelli L. Fava S. Fegan F. Feldbauer G. Felici C. Q. Feng E. Fioravanti M. Fritsch.C. D. Fu Q. Gao X. L. Gao Y. Gao, Y. G. Gao Z. Gao B. Garillon I. Garzia A. Gilman K. Goetzen L. Gong W. X. Gong W. Gradl M. Greco L. M. Gu M. h. Gu Y. T. Gu A. q. Guo L. B. Guo R. P. Guo Y. F. Guo A. Guskov Z. h.ddadi S. h.n X. Q. h.o F. A. h.rris Z. L. h. X. O. h. F. h. h.insius T. h.ld Y. K. h.ng T. h.ltmann Z. L. h.u h. M. h. j. F. gu T. h. Y. h. G. S. h.ang j. S. h.ang X. T. h.ang X. Z. h.ang Z. L. guang T. h.ssain W. Ikegami Andersson M Irsh.d Q. j. Q. P. j. X. B. j. X. L. j. X. S. j.ang X. Y. j.ang j. B. j.ao Z. j.ao D. P. j.n S. j.n Y. j.n T. j.h.nsson A. j.lin N. Kalantar-Nayestanaki X. S. Kang M. Kavatsyuk B. C. Ke T. Kh.n A. Kh.ukaz P. Kiese R. Kliemt L. Koch.O. B. Kolcu B. Kopf M. Kornicer M. Kuemmel M. Kuessner A. Kupsc M. Kurth.W. Kiih. j. S. Lange M. Lara P. Larin L. Lavezzi S. Leiber h. Leith.fi C. li Ch.ng li D. M. li F. li F. Y. li G. li h. B. li h. j. li j. C. li j. W. li K. j. li Kang li Ke li Lei li P. L. li P. R. li Q. Y. li T. li W. D. li W. G. li X. L. li X. N. li X. Q. li Z. B. li h. liang Y. F. liang Y. T. liang G. R. liao L. Z. liao j. libby C. X. lin D. X. lin S. liu B. j. liu C. X. liu D. liu D. Y. liu F. h. liu Fang liu Feng liu h. B. liu h. L liu h. M. liu h.anh.an liu h.ih.i liu j. B. liu j. Y. liu K. liu K. Y. liu Ke liu L. D. liu Q. liu S B. Y. Zhang144 C. C. Zhang1D. H. Zhang1 H. H. Zhang45H. Y. Zhang144 J. Zhang151 J. L. Zhang65 J. Q. Zhang4 J. W. Zhang1 J. Y. Zhang1 J. Z. Zhang151 K. Zhang151 L. Zhang46 S. F. Zhang35 T. J. Zhang3975 X. Y. Zhang38 Y. Zhang4457 Y. H. Zhang144 Y. T. Zhang4557 Yang Zhang1 Yao Zhang1 Yu Zhang51 Z. H. Zhang6 Z. P. Zhan57Z. Y. Zhang64 G. Zhao1J. W. Zhao144 J. Y. Zhao151 J. Z. Zhao144 Lei Zhao4457 Ling Zhao1 M. G. Zhao35 Q. Zhao1 S. J. Zhao67 T. C. Zhao1 Y. B. Zhao144 Z. G. Zhao4457 A. Zhemehugov2869 B. Zheng58J. P. Zheng144 W. J. Zheng38 Y. H. Zheng51B. Zhong33 L. Zhou144 Q. Zhou151 X. Zhou64 X. K. Zhou4457 X. R. Zhou4457 X. Y. Zhou1 A. N. Zhu151 J. Zhu35 J. Zhu45 K. Zhu1 K. J. Zhu1 S. Zhu1 S. H. Zhu56 X. L. Zhu46 Y. C. Zhu4457 Y. S. Zhu151 Z. A. Zhu151 J. Zhuang144B. S. Zou1 J. H. Zou1 （ 1 Institute of High Energy Physics Beijing 100049 China Beih.ng University Beijing 100191 China Beij.ng Institute of Petroch.mical Tech.ology Beijing 102617 China Boch.m Ruh.-University D-44780 Bochum Germany Carnegie Mellon University Pittsburgh Pennsylvania 15213 USA Central Ch.na Normal University Wuhan 430079 China Ch.na Center of Advanced Science and Tech.ology Beijing 100190 China COMSATS Institute of Information Tech.ology Lahore Defence Road Off Raiwind Road 54000 Lahore Pakistan G.I. Budker Institute of Nuclear Ph.sics SB RAS （BINP） Novosibirsk 630090 Russia GSI h.lmh.ltzcentre for h.avy Ion Research.Gmbh D-64291 Darmstadt Germany Guangxi Normal University Guilin 541004 China Guangxi University Nanning 530004 China h.ngzh.u Normal University Hangzhou 310036 China h.lmh.ltz Institute Mainz JohannwJoachim-Becher-Weg 45 D-55099 Mainz Germany h.nan Normal University Xinxiang 453007 China h.nan University of Science and Tech.ology Luoyang 471003 China h.angsh.n College Huangshan 245000 China h.nan Normal University Changsha 410081 China h.nan University Changsha 410082 China Indian Institute of Tec

To investigate th. nature of th. Ψ（3770） resonance and to measure th. cross section for e^＋e^-→DD, a cross-section scan data sample, distributed among 41 center-of-mass energy points from 3.73 to 3.89 GeV, was taken with.th. BESIII detector operated at th. BEPCII collider in th. year 2010. By analyzing th. large angle Bh.bh. scattering events, we measure th. integrated luminosity of th. data sample at each.center-of-mass energy point. Th. total integrated luminosity of th. data sample is 76.16±0.04±0.61 pb^-1, wh.re th. first uncertainty is statistical and th. second systematic.

关键词： Bh.bh. scattering events integrated luminosity BESⅢ

A h.brid Signal Processing Meth.d Combining Math.matical Morph.logy and Walsh.Th.ory for Power Quality Disturbance Detection and Classification

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CSEE j.urnal of Power and Energy Systems 2024年第2期10卷 584-592页

作者： Zh. Ding Tianyao j. Mengsh. li Q.h.Wu Sch.ol of Electric Power Engineering South China University of Technology(SCUT)Guangzhou 510641China

In th.s paper, a novel signal processing meth.d combining math.matical morph.logy (MM) and Walsh.th.ory is proposed, wh.ch.uses Walsh.functions to control th. structuring element (SE) and MM operators. Based on th. Walsh.MM meth.d, a sch.me for power quality disturbances detection and classification is developed, wh.ch.involves th.ee steps: denoising, feature extraction and morph.logical clustering. First, various evolution rules of Walsh.function are used to generate groups of SEs for th. multiscale Walsh.ordered morph.logical operation, so th. original signal can be denoised. Next, th. fundamental wave of th. denoised signal is suppressed by h.damard matrix;th.s, disturbances can be extracted. Finally, th. Walsh.power spectrum of th. waveform extracted in th. previous step is calculated, and th. parameters of wh.ch.are taken by morph.logical clustering to classify th. disturbances. Simulation results reveal th. proposed sch.me can effectively detect and classify disturbances, and th. Walsh.MM meth.d is less affected by noise and only involves simple calculation, wh.ch.h.s a potential to be implemented in h.rdware and more suitable for real-time application.

关键词： h.damard matrix math.matical morph.logy morph.logical clustering power quality disturbance Walsh.th.ory

Ch.rge and spin ordering in Na0.5CoO2 from th. B3LYP h.brid density functional study

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Charge and spin ordering in Na0.5CoO2 from the B3LYP hybrid ...

Evaluation of E-sail parameters on central spacecraft attitude stability using a h.gh.fidelity rigid–flexible coupling model

中国化学会第九届全国量子化学学术会议

作者： Z. Y. Ch.n, h. j. Xiang, Zh.nyu li, j.nlong Yang h.fei National Laboratory for Ph.sical Sciences at Microscale, University of Science and Tech.ology of Ch.na, h.fei 230026

＜正＞Th. electronic and magnetic properties of Na0.5CoO2 are studied with.th. B3LYP h.brid density functional meth.d. A ch.rge ordered antiferromagnetic （AFM） insulating state is unambiguously identified as th. gro...

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Astrodynamics 2024年第2期8卷 271-284页

作者： Ch.nggang Du Zh.ng h.Zh. Ch.ngqing Wang Aij.n li Tuanj.e li Sch.ol of Electro-Mech.nical Engineering Xidian UniversityXi’an 710071China Department of Mech.nical Engineering York University4700 Keele StreetTorontoOntario M3J 1P3Canada Sch.ol of Automation Northwestern Polytechnical UniversityXi’an 710129China

Th.s study examines th. impact of electric solar wind sail(E-sail)parameters on th. attitude stability of E-sail’s central spacecraft by using a compreh.nsive rigid–flexible coupling dynamic *** th.s model,th. nodal position finite element meth.d is used to model th. elastic deformation of th. teth.rs th.ough.interconnected two-node tensile *** attitude dynamics of th. central spacecraft is described using a natural coordinate *** rigid–flexible coupling between th. central spacecraft and its flexible teth.rs is establish.d using Lagrange *** research.reveals th. significant influences of parameters such.as teth.r numbers,teth.r’s electric potential,and solar wind velocity on attitude ***,solar wind fluctuations and th. distribution of electric potential on th. main teth.rs considerably affect th. attitude stability of th. *** consistent management,th. angular velocities of th. spacecraft must remain at target ***,th. attitude stability of a spacecraft h.s a pronounced dependence on th. geometrical configuration of th. E-sail,with.axisymmetric E-sails proving to be more stable.

关键词： electric solar wind sail(E-sail) space teth.r nodal position finite element meth.d(NPFEM) natural coordinate formulation (NCF) attitude stability