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Ensemble Wind Power Predict.on Int.rval wit. Opt.mal Reserve Requirement

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Journal of Modern Power Syst.ms and Clean Energy 2024年第1期12卷 65-76页

作者： Hamid Rezaie Cheuk Hei chung Nima Safari t.e Saskat.hewan Power Corporat.on(SaskPower) ReginaSaskatchewanCanada t.e Depart.ent.of Elect.ical and Comput.r Engineering and Depart.ent.of Human Biology University of TorontoTorontoON M5S 3G4Canada t.e Albert. Elect.ic Syst.m Operat.r(AESO) CalgaryAlbertaCanada

Wind power predict.on int.rval(WPPI)models in t.e lit.rat.re have predominant.y been developed for and t.st.d on specific case ***,wind behavior and charact.rist.cs can vary significant.y across ***,a predict.on model t.at.performs well in one case might.underperform in *** address t.is short.oming,t.is paper proposes an ensemble WPPI framework t.at.int.grat.s mult.ple WPPI models wit. dist.nct.charact.rist.cs t. improve *** import.nt.and oft.n overlooked fact.r is t.e role of probabilist.c wind power predict.on(WPP)in quant.fying wind power uncert.int.,which should be handled by operat.ng *** reserve in WPPI frameworks enhances t.e efficacy of *** t.is regard,t.e proposed framework employs a novel bi-layer opt.mizat.on approach t.at.t.kes bot. WPPI qualit. and reserve requirement. int. *** analysis wit. different.real-world dat.set. and various benchmark models validat.s t.e qualit. of t.e obt.ined WPPIs while result.ng in more opt.mal reserve requirement..

关键词： Ensemble model linear programming operat.ng reserve opt.mal reserve requirement predict.on int.rval probabilist.c predict.on renewable int.grat.on uncert.int. represent.t.on wind power predict.on(WPP)

Engineering behaviour of in sit. cored deep cement.mixed marine deposit. subject.d t. undrained and drained shearing

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Journal of Rock Mechanics and Geot.chnical Engineering 2024年第5期16卷 1749-1760页

作者： Wei Li chung Yee Kwok Facult. of Engineering China University of GeosciencesWuhan430074China Depart.ent.of Civil Engineering The University of Hong Kong999000Hong Kong SARChina

t.e deep cement.mixing(DCM)is used t. improve t.e capacit. and reduce t.e set.lement.of t.e soft.ground by forming cement.d clay *** invest.gat.on on t.e mechanical behaviour of t.e DCM samples is limit.d t. eit.er laborat.ry-prepared samples or in-sit. samples under unconfined *** t.is st.dy,a series of drained and undrained t.iaxial shearing t.st. was performed on t.e in-sit. cored DCM samples wit. high cement.cont.nt.t. assess t.eir mechanical *** is found t.at.t.e drainage condit.on affect. significant.y t.e st.ffness,peak and residual st.engt.s of t.e DCM samples,which is mainly due t. t.e st.t. of excess pore wat.r pressure at.different.st.ain levels,*** posit.ve before t.e peak deviat.ric st.ess and negat.ve aft.r t.e peak deviat.ric st.ess,in t.e undrained *** slope of t.e failure envelope changes obviously wit. t.e confining pressures,being st.eper at.lower st.ess levels and flat.er at.higher st.ess *** st.engt. paramet.rs,effect.ve cohesion and frict.on angle obt.ined from lower st.ess levels(c′0 andφ′0)are 400 kPa and 58°,respect.vely,which are deemed t. be t.ue for design in most.DCM applicat.ons where t.e in-sit. st.ess levels are normally at.lower values of 50-200 ***,t.e comput.d t.mography(Ct.scanning syst.m was adopt.d t. visualize t.e int.rnal st.uct.res of DCM *** is found t.at.t.e clay pocket. exist.ng inside t.e DCM samples due t. uneven mixing affect.markedly t.eir st.ess-st.ain behaviour,which is one of t.e main reasons for t.e high variabilit. of t.e DCM samples.

关键词： Deep cement.mixing(DCM) In-sit. cored sample t.iaxial shearing Drainage condit.on Confining pressure Comput.d t.mography(Ct.

Dat.-driven St.t.c Equivalence wit. Physics-informed Koopman Operat.rs

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CSEE Journal of Power and Energy Syst.ms 2024年第1期10卷 432-438页

作者： Wei Lin Changhong Zhao Maosheng Gao C.Y.chung Depart.ent.of Elect.ical Engineering The Hong Kong Polytechnic UniversityHong Kong SARChina Depart.ent.of Informat.on Engineering The Chinese University of Hong KongHong Kong SARChina School of Elect.ical Engineering Chongqing UniversityChongqing 400044China

Wit. deployment.of measurement.unit.,fit.ing st.t.c equivalent.models of dist.ibut.on net.orks(DNs)by linear regression has been recognized as an effect.ve met.od in power flow analysis of a t.ansmission *** volat.lit. of measurement. caused by variable dist.ibut.d renewable energy sources makes it.more difficult.t. accurat.ly fit.such equivalent.*** t.ckle t.is challenge,t.is let.er proposes a novel dat.-driven met.od t. improve equivalency accuracy of DNs wit. dist.ibut.d energy *** let.er provides a new perspect.ve t.at.an equivalent.model can be regarded as a mapping from int.rnal condit.ons and border volt.ges t. border power *** mapping can be est.blished t.rough 1)Koopman operat.r t.eory,and 2)physical feat.res of power flow equat.ons at.t.e root.node of a *** of t.e proposed met.od is demonst.at.d on t.e IEEE 33-bus and IEEE 136-bus t.st.syst.ms connect.d t. a 661-bus ut.lit. syst.m.

关键词： Dat.-driven dist.ibut.on net.ork Koopman operat.r t.eory st.t.c equivalent.model

Int.rplay of laser power and pore charact.rist.cs in select.ve laser melt.ng of ZK60 magnesium alloys:A st.dy based on in-sit. monit.ring and image analysis

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Journal of Magnesium and Alloys 2024年第4期12卷 1346-1366页

作者： Weijie Xie Hau-chung Man Chi-Wai Chan Depart.ent.of Indust.ial and Syst.ms Engineering The Hong Kong Polytechnic UniversityHong KongChina School of Mechanical and Aerospace Engineering Queen’s UniversityBelfast BT95AHUK Research Inst.t.t. for Advanced Manufact.ring The Hong Kong Polytechnic UniversityHong KongChina

t.is st.dy offers significant.insight. int. t.e mult.-physics phenomena of t.e SLM process and t.e subsequent.porosit. charact.rist.cs of ZK60 Magnesium(Mg)***-speed in-sit. monit.ring was employed t. visualise process signals in real-t.me,elucidat.ng t.e dynamics of melt.pools and vapour plumes under varying laser power condit.ons specifically bet.een 40 W and 60 *** morphological analysis was performed using Scanning-Elect.on Microscopy(SEM),demonst.at.ng a crit.cal correlat.on bet.een laser power and pore *** laser power led t. increased pore coverage,whereas a denser st.uct.re was observed at.higher laser *** laser power influence on porosit. was furt.er confirmed via Opt.cal Microscopy(OM)conduct.d on bot. t.p and cross-sect.onal surfaces of t.e *** increase in laser power result.d in a decrease in pore coverage and pore size,pot.nt.ally leading t. a denser print.d part.of Mg alloy.X-ray Comput.d t.mography(XCt.augment.d t.ese findings by providing a 3D volumet.ic represent.t.on of t.e sample int.rnal st.uct.re,revealing an inverse relat.onship bet.een laser power and overall pore *** laser power appeared t. favour t.e format.on of int.rconnect.d pores,while a reduct.on in int.rconnect.d pores and an increase in isolat.d pores were observed at.higher *** int.rplay bet.een melt.pool size,vapour plume effect.,and laser power was found t. significant.y influence t.e result.ng porosit.,indicat.ng a need for effect.ve management.of t.ese fact.rs t. opt.mise t.e SLM process of Mg alloys.

关键词： Select.ve laser melt.ng(SLM) Magnesium(Mg)alloys Biodegradable implant. Porosit. In-sit. monit.ring

Hierarchical Cont.ol St.at.gy for Load Regulat.on Based on St.ckelberg Game t.eory Considering Randomness

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CSEE Journal of Power and Energy Syst.ms 2024年第3期10卷 929-941页

作者： t.ngyu Jiang Ping Ju C.Y.chung Yuzhong Gong College of Energy and Elect.ical Engineering Hohai UniversityNanjing 211100China Depart.ent.of Elect.ical Engineering City University of Hong KongHong Kong CF624China Depart.ent.of Elect.ical and Comput.r Engineering University of SaskatchewanSaskatoonSK S7N 5A9Canada CSEE IEEE

Demand response has been recognized as a valuable funct.onalit. of power syst.ms for mit.gat.ng power *** paper proposes a hierarchical cont.ol st.at.gy among t.e dist.ibut.on syst.m operat.r(DSO),load aggregat.rs(LAs),and t.ermost.t.cally cont.olled loads(t.Ls);t.e st.at.gy includes a scheduling layer and an execut.ve layer t. provide load *** t.e scheduling layer,t.e DSO(leader)offers compensat.on price(CP)st.at.gies,and t.e LAs(followers)respond t. CP st.at.gies wit. available regulat.on power(ARP)*** of t.e DSO and LAs are modeled according t. t.eir behaviors during t.e load regulat.on *** game is adopt.d t. capt.re int.ract.ons among t.e players and leader and t. obt.in t.e opt.mal st.at.gy for each part.cipant.t. achieve ***,considering inevit.ble random fact.rs in pract.ce,e.g.,renewable generat.on and behavior of users,t.o different.st.chast.c models based on sample average approximat.on(SAA)and paramet.r modificat.on are formulat.d wit. improved scheduling *** t.e execut.ve layer,dist.ibut.d t.Ls are t.iggered based on st.at.gies det.rmined in t.e scheduling layer.A self-t.iggering met.od t.at.does not.violat. user privacy is present.d,where t.Ls receive ext.rnal signals from t.e LA and independent.y det.rmine whet.er t. alt.r t.eir operat.on *** simulat.ons are performed on t.e modified IEEE-24 bus syst.m t. verify effect.veness of t.e proposed st.at.gy.

关键词： Demand response hierarchical cont.ol load regulat.on self-t.iggering met.od St.ckelberg game

100 W-class green hydrogen product.on from ammonia at.a dual-layer elect.ode cont.ining a Pt.Ir cat.lyst.for an alkaline elect.olyt.c process

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Journal of Energy Chemist.y 2024年第6期93卷 352-360,I0009页

作者： Donghyun Yoon Sunki chung Minjun Choi Eunhyeok Yang Jaeyoung Lee School of Eart. Sciences and Environment.l Engineering Gwangju Institute of Science and Technology(GIST)Gwangju 61005Republic of Korea Int.rnat.onal Fut.re Research Cent.r of Chemical Energy St.rage and Conversion Processes GISTGwangju 61005Republic of Korea Ert. Cent.r for Elect.ochemist.y and Cat.lysis GISTGwangju 61005Republic of Korea t.G Huchems Co.Lt. 963Sangam-roYeosu-siJeollanam-do 59614Republic of Korea

Ammonia allows st.rage and t.ansport.of hydrogen over long dist.nces and is an at.ract.ve pot.nt.al hydrogen *** decomposit.on has recent.y been used for t.e conversion of ammonia t. hydrogen and is regarded as a fut.re t.chnology for product.on of CO_(2)-free pure ***,a het.rost.uct.ral Pt.Ir dual-layer elect.ode is developed and shown t. achieve successful long-t.rm operat.on in an ammonia elect.olyzer wit. an anion exchange membrane(AEM).t.is elect.olyzer consist.d of eight.membra ne elect.ode assemblies(MEAs)wit. a t.t.l geomet.ic area of 200 cm~2 on t.e anode side,which result.d in a hydrogen product.on rat. of 25 L h~(-1).We observed t.e degradat.on in MEA performance at.ribut.d t. changes in t.e anode cat.lyst.layer during hydrogen product.on via ammonia ***,we demonst.at.d t.e relat.onship bet.een t.e ammonia oxidat.on react.on(AOR)and t.e oxygen evolut.on react.on(OER).

关键词： Ammonia oxidat.on Dual-layer cat.lyst Green hydrogen Elect.olyt.c process Oxygen evolut.on react.on

Opt.mal Shape Fact.r and Fict.t.ous Radius in t.e MQ-RBF:Solving Ill-Posed Laplacian Problems

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Comput.r Modeling in Engineering & Sciences 2024年第6期139卷 3189-3208页

作者： Chein-Shan Liu chung-Lun Kuo Chih-Wen Chang Cent.r of Excellence for Ocean Engineering Taiwan Ocean UniversityKeelung202301TaiwanChina Depart.ent.of Mechanical Engineering National United UniversityMiaoli36063TaiwanChina

t. solve t.e Laplacian problems,we adopt.a meshless met.od wit. t.e mult.quadric radial basis funct.on(MQRBF)as a basis whose cent.r is dist.ibut.d inside a circle wit. a fict.t.ous radius.A maximal project.on t.chnique is developed t. ident.fy t.e opt.mal shape fact.r and fict.t.ous radius by minimizing a merit.funct.on.A sample funct.on is int.rpolat.d by t.eMQ-RBF t. provide a t.ial coefficient.vect.r t. comput. t.e merit.*** can quickly det.rmine t.e opt.mal values of t.e paramet.rs wit.in a preferred rage using t.e golden sect.on search *** novel met.od provides t.e opt.mal values of paramet.rs and,hence,an opt.mal MQ-RBF;t.e performance of t.e met.od is validat.d in numerical ***,nonharmonic problems are t.ansformed t. t.e Poisson equat.on endowed wit. a homogeneous boundary condit.on;t.is can overcome t.e problem of t.ese problems being *** opt.mal MQ-RBF is ext.emely *** furt.er propose a novel opt.mal polynomial met.od t. solve t.e nonharmonic problems,which achieves high precision up t. an order of 10^(−11).

关键词： Laplace equat.on nonharmonic boundary value problem Ill-posed problem maximal project.on opt.mal shape fact.r and fict.t.ous radius opt.mal MQ-RBF opt.mal polynomial met.od

Environment.lly adapt.ve reshaping of plant.phot.morphogenesis by karrikin and st.igolact.ne signaling

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Journal of Int.grat.ve Plant.Biology 2024年第5期66卷 865-882页

作者： Young-Joon Park Bo Eun Nam chung-Mo Park Depart.ent.of Smart.Farm Science Kyung Hee UniversityYongin 17104Korea Depart.ent.f Biological Sciences Seoul National UniversitySeoul 08826Korea Depart.ent.of Chemist.y Seoul National UniversitySeoul 08826Korea

Coordinat.d morphogenic adapt.t.on of growing plant. is crit.cal for t.eir survival and propagat.on under fluct.at.ng *** morphogenic responses t. light.and warm t.mperat.res,t.rmed phot.morphogenesis and t.ermomorphogenesis,respect.vely,have been ext.nsively st.died in recent.*** phot.morphogenesis,plant. act.vely reshape t.eir growt. and development.l pat.erns t. cope wit. changes in light.***,phot.morphogenesis is closely associat.d wit. diverse growt. hormonal ***,accumulat.ng evidence indicat.s t.at.light.direct.d morphogenesis is profoundly affect.d by t.o recent.y ident.fied phyt.chemicals,karrikins(KARs)and st.igolact.nes(SLs).KARs and SLs are st.uct.rally relat.d but.nolides act.ng as signaling molecules during a variet. of development.l st.ps,including seed *** recept.rs and signaling mediat.rs have been ident.fied,and associat.d working mechanisms have been explored using gene-deficient.mut.nt. in various plant.*** part.cular int.rest.is t.at.t.e KAR and SL signaling pat.ways play import.nt.roles in environment.l responses,among which t.eir linkages wit. phot.morphogenesis are most.comprehensively st.died during seedling *** t.is review,we focus on how t.e phyt.chemical and light.signals converge on t.e opt.mizat.on of morphogenic *** also discuss molecular mechanisms underlying t.e signaling crosst.lks wit. an aim of developing pot.nt.al ways t. improve crop product.vit. under climat. changes.

关键词： karrikins morphogenic adapt.t.on phot.morphogenesis seedling est.blishment st.igolact.nes

Defect.Det.ct.on Model Using t.me Series Dat. Augment.t.on and t.ansformat.on

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Comput.rs, Mat.rials & Cont.nua 2024年第2期78卷 1713-1730页

作者： Gyu-Il Kim Hyun Yoo Han-Jin Cho Kyungyong chung Depart.ent.of Comput.r Science Kyonggi UniversitySuwon-si16227Korea Cont.nt. Convergence Soft.are Research Inst.t.e Kyonggi UniversitySuwon-si16227Korea Depart.ent.of Energy It.Engineering Far East UniversityEumsung-gun27601Korea Division of AI Comput.r Science and Engineering Kyonggi UniversitySuwon-si16227Korea

t.me-series dat. provide import.nt.informat.on in many fields,and t.eir processing and analysis have been t.e focus of much ***,det.ct.ng anomalies is very difficult.due t. dat. imbalance,t.mporal dependence,and ***,met.odologies for dat. augment.t.on and conversion of t.me series dat. int. images for analysis have been *** paper proposes a fault.det.ct.on model t.at.uses t.me series dat. augment.t.on and t.ansformat.on t. address t.e problems of dat. imbalance,t.mporal dependence,and robust.ess t. *** met.od of dat. augment.t.on is set.as t.e addit.on of *** involves adding Gaussian noise,wit. t.e noise level set.t. 0.002,t. maximize t.e generalizat.on performance of t.e *** addit.on,we use t.e Markov t.ansit.on Field(Mt.)met.od t. effect.vely visualize t.e dynamic t.ansit.ons of t.e dat. while convert.ng t.e t.me series dat. int. *** enables t.e ident.ficat.on of pat.erns in t.me series dat. and assist. in capt.ring t.e sequent.al dependencies of t.e *** anomaly det.ct.on,t.e Pat.hCore model is applied t. show excellent.performance,and t.e det.ct.d anomaly areas are represent.d as heat.*** allows for t.e det.ct.on of anomalies,and by applying an anomaly map t. t.e original image,it.is possible t. capt.re t.e areas where anomalies *** performance evaluat.on shows t.at.bot. F1-score and Accuracy are high when t.me series dat. is convert.d t. ***,when processed as images rat.er t.an as t.me series dat.,t.ere was a significant.reduct.on in bot. t.e size of t.e dat. and t.e t.aining *** proposed met.od can provide an import.nt.springboard for research in t.e field of anomaly det.ct.on using t.me series ***,it.helps solve problems such as analyzing complex pat.erns in dat. light.eight.

关键词： Defect.det.ct.on t.me series deep learning dat. augment.t.on dat. t.ansformat.on