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Real-time Energy Management Method for Electric-hydrogen Hybrid Energy Storage Microgrids Based on DP-MPC

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CSEE Journal of Power and Energy Systems 2024年第1期10卷 324-336页

作者： qi Li Xueli Zou Yuchen pu Weirong Chen School of Electrical Engineering Southwest Jiaotong UniversityChengdu 611756China

With the increasing presence of intermittent energy resources in microgrids,it is difficult to precisely predict the output of renewable resources and their load *** order to realize the economical operations of the system,an energy management method based on a model predictive control(MPC)and dynamic programming(DP)algorithm is *** method can reasonably distribute the energy of the battery,fuel cell,electrolyzer and external grid,and maximize the output of the distributed power supply while ensuring the power balance and cost optimization of the *** on an ultra-shortterm forecast,the output power of the photovoltaic array and the demand power of the system load are *** offline global optimization of traditional dynamic programming is replaced by the repeated rolling optimization in a limited period of time to obtain power values of each unit in the energy storage *** with the traditional DP,MILP-MPC and the logic based real-time management method,the proposed energy management method is proved to be feasible and effective.

关键词： Electric-hydrogen hybrid energy economic energy management improved dynamic programming microgrid model predictive control

Effects of two silicone resin coatings on performance of FeSiAl magnetic powder cores

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Journal of Iron and Steel Research International 2024年第5期31卷 1279-1288页

作者： Jia-qi Liu Zheng-qu Zhu pu wang Yi-fan Li Jing Pang Jia-quan Zhang School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing100083China qingdao Yunlu Advanced Materials Technology Co. Ltd.Qingdao266232ShandongChina

Two silicon resins with excellent thermal stability,JH1123 and JH7102,are used as the insulated agents and binders for the gas-atomized FeSiAl powder,and corresponding magnetic powder cores(MPCs)are *** insulation capability and application prospects of the two silicon resins are evaluated by comparing the magnetic properties of the coated powder and *** scanning electron microscopy,energy dispersive X-ray spectroscopy and Fourier transform infrared spectroscopy results show that uniform insulation layers are both formed on the powder ***1123 has stronger binding ability,and the JH1123-coated powder exhibits severe agglomeration,with d50(average particle size)approximately twice that of the JH7102-coated *** as-prepared MPCs exhibit outstanding soft magnetic ***,the permeability of FeSiAl@JH1123 is up to 74.0,which is 35.5%higher than that of FeSiAl@JH7102 because JH1123 can further improve the density of the *** for FeSiAl@JH7102,it has better direct current bias and lower core loss of 716.9 mW cm^(−3) at 20 mT and 1000 kHz due to its lower coercivity and greater anti-magnetic saturation ability.A comprehensive comparison shows that FeSiAl@JH1123 is suitable for medium and high frequency applications,while FeSiAl@JH7102 is more suitable for high frequency *** indicates that the use of JH1123 and JH7102 silicon resins for binding and insulated coating not only simplifies the preparation process of MPCs,but also enables the controlled production of MPCs for different applications.

关键词： FeSiAl Insulated coating Magnetic powder core Permeability Core loss

Spontaneous gallbladder perforation and colon fistula in hypertriglyceridemia-related severe acute pancreatitis:A case report

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World Journal of Clinical Cases 2022年第17期10卷 5846-5853页

作者： qi-pu wang Yi-Jun Chen Mei-Xing Sun Jia-Yuan Dai Jian Cao qiang Xu Guan-Nan Zhang Sheng-Yu Zhang Department of Gastroenterology Peking Union Medical College HospitalBeijing 100730China School of Medicine Tsinghua UniversityBeijing 100084China Department of Emergency Medicine Peking Union Medical College HospitalBeijing 100730China Department of Radiology Peking Union Medical College HospitalBeijing 100730China Department of General Surgery Peking Union Medical College HospitalBeijing 100730China

BACKGROUND Gallbladder perforation and gastrointestinal fistula are rare but serious complications of severe acute pancreatitis(SAP).However,neither spontaneous gallbladder perforation nor cholecysto-colonic fistula has been reported in acalculous acute pancreatitis *** SUMMARY A 31-year-old male presenting with epigastric pain was diagnosed with hypertriglyceridemia-related *** suffered from multiorgan failure and was able to leave the intensive care unit on day *** percutaneous drainage tubes were placed for profound exudation in the peripancreatic region and left paracolic *** developed spontaneous gallbladder perforation with symptoms of fever and right upper quadrant pain 1 mo after SAP onset and was stabilized by percutaneous *** infection appeared 1 mo later and was treated with antibiotics but without satisfactory *** multiple colon fistulas,including a cholecysto-colonic fistula and a descending colon fistula,emerged 3 mo after the onset of ***-assisted peripancreatic debridement and ileostomy were carried out *** fistulas achieved spontaneous closure 7 mo later,and the patient recovered after cholecystectomy and ileostomy *** presume that the causes of gallbladder perforation are poor bile drainage due to external pressure,pancreatic enzyme erosion,and *** possible causes of colon fistulas are pancreatic enzymes or infected necrosis erosion,ischemia,and iatrogenic *** to our experience,localized gallbladder perforation can be stabilized by percutaneous *** debridement and proximal colostomy followed by cholecystectomy are feasible and valid treatment options for cholecysto-colonic *** Gallbladder perforation and cholecysto-colonic fistula should be considered in acalculous SAP patients.

关键词： Acalculous severe acute pancreatitis Gallbladder perforation Cholecysto-colonic fistula Percutaneous drainage Cholecystectomy Case report

Two-stage Scheduling for Island CPHH IES Considering Plateau Climate

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CSEE Journal of Power and Energy Systems 2024年第4期10卷 1775-1786页

作者： Yuchen pu qi Li Yibin qiu Xueli Zou Weirong Chen School of Electrical Engineering Southwest Jiaotong UniversityChengdu 611756China

In this paper,an island integrated energy system(IES)combining power,heat and hydrogen(CPHH)is built,and optimal power-heat-hydrogen scheduling is studied under actual plateau meteorological *** the comprehensive demands of residents,an IES including renewable energy sources(RESs),fuel cell,electrolyzer,electric boiler,thermal energy storage device and new energy vehicles is established and *** the first stage of operation,according to the prediction of RESs and demands,day-ahead optimization is carried out which aims to minimize operation cost,while electric vehicles(EVs)are considered as special demand response(DR)*** the second stage of operation,ultra-short-term prediction is implemented to provide prediction data for model predictive control(MPC),realizing real-time *** as a CPHH system,the fuel cell and electrolyzer collaborate to meet various needs of the plateau residential area with high *** addition,the method and IES structure proposed in this paper is compared with other options.

关键词： CPHH feul cell hydrogen island IES scheduling

Fe-N-C heterogeneous Fenton-like catalyst for the degradation of tetracycline:Fe-N coordination and mechanism studies

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Chinese Chemical Letters 2024年第9期35卷 309-314页

作者： Weichen Zhu Wei Zuo pu wang Wei Zhan Jun Zhang Lipin Li Yu Tian Hong qi Rui Huang State Key Laboratory of Urban Water Resource and Environment(SKLUWRE) School of EnvironmentHarbin Institute of TechnologyHarbin 150090China Guangdong Yuehai Water Investment Co. Ltd.Shenzhen 518021China National Engineering Research Center of Urban Water Resources Co. Ltd.Harbin Institute of TechnologyHarbin 150090China

Fe-N-C materials have received increasing attention,due to its distinctive catalytic ***,the Fe-N coordination number dependence of catalytic ability and mechanism for H_(2)O_(2)activation remain ***,a series of Fe-N-C heterogeneous Fenton-like catalysts with different Fe-N coordination number were prepared for tetracycline *** results demonstrated that samples with Fe-N4 structure exhibited high *** excellent performance was mainly ascribed to the high adsorption capacity and the formation of superoxide radicals(•O_(2)^(−))catalyzed by Fe linked to pyridinic *** intermediates and degradation pathways of tetracycline degradation by Fe-N-C/H_(2)O_(2)system were analyzed by liquid chromatography coupled to tandem mass spectrometry(LC-MS/MS).Furthermore,we applied our Fe-N-C catalysts to treat simulated pharmaceutical wastewater with high tetracycline degradation capacity despite high concentrations of organic matter such as oxalic acid and various ionic *** work reveals the dependence of the activation H_(2)O_(2)on the Fe-N coordination environment and the degradation mechanism of these *** provides insights into the prospects for tuning the catalyst in practical applications.

关键词： H_(2)O_(2)activation Advanced oxidation process Superoxide radicals Degradation pathways EXAFS

Neuroprotective Effect and Mechanism of Tanreqing Injection on Ischemic Stroke:Insights from Network Pharmacology and in vivo Experiments

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Chinese Journal of Integrative Medicine 2024年第8期30卷 713-720页

作者： LI Zhong-hao pu Xiao-qi LI Sha-sha DONG Xiao-ke ZHANG Guo-qiang wang Yu LIU Jin-min Department of Emergency China-Japan Friendship HospitalBeijing100029China Department of Neurology Beijing University of Chinese Medicine Dongfang HospitalBeijing100078China Department of Radiology China-Japan Friendship HospitalBeijing100029China Graduate School Beijing University of Chinese MedicineBeijing100029China

Objective To explore the neuroprotective effects and mechanism of Tanreqing Injection(TRQ)on treating ischemic stroke based on network pharmacology and in vivo experimental *** The chemical compounds of TRQ were retrieved based on published data,with targets retrieved from pubChem,Therapeutic Target Database and *** visualization and analysis were performed using Cytoscape,with protein-protein interaction networks derived from the STRING *** analysis was performed using Kyoto Encyclopedia of Genes Genomes pathway and Gene Ontology *** in vivo experiments,the middle cerebral artery occlusion(MCAO)model was *** volume was determined by 2,3,5-triphenyltetrazolium hydrochloride staining and protein expressions were analyzed by Western *** docking was performed to predict ligand-receptor *** We screened 81 chemical compounds in TRQ and retrieved their therapeutic *** the targets,116 were therapeutic targets for *** enrichment analysis showed that the apelin signaling pathway was a key pathway for ischemic ***,in in vivo experiment we found that administering with intraperitoneal injection of 2.5 mL/kg TRQ every 6 h could significantly reduce the infarct volume of MCAO rats(P<0.05).In addition,protein levels of the apelin receptor(APJ)/phosphatidylinositol 3-kinase(PI3K)/protein kinase B(AKT)pathway were increased by TRQ(P<0.05).In addition,41 chemical compounds in TRQ could bind to *** The neuroprotective effect of TRQ may be related to the APJ/PI3K/AKT signaling ***,further studies are needed to confirm the findings.

关键词： Tanreqing Injection Chinese medicine ischemic stroke middle cerebral artery occlusion quantitative estimate of drug-likeness

Optical Sensor with Wide Range and High Sensitivity for Internal Magnetic Field Detection of Transformer

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CSEE Journal of Power and Energy Systems 2024年第5期10卷 2230-2244页

作者： Meng Huang Wei Zheng Tong Ji Mao Ji Tianjiao pu Bo qi State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power UniversityBeijing 102206China Beijing Key Laboratory of High Voltage&EMC North China Electric Power UniversityBeijing 102206China China Electric Power Research Institute Beijing 100192China

The deterioration of winding defects is one of the important causes of power transformer fires and even explosion *** change of leakage magnetic field distribution is the most direct response to winding *** there are few sensors suitable for online measurement of the internal magnetic field of *** on the Faraday magneto-optical effect,a magnetic field sensor with wide range and high sensitivity is proposed in this paper,which is suitable for the interior use of *** straight-through optical structure with interior polarizer is adopted,and the sensor has a measurement range of 1.5 T and a sensitivity of 1 *** also possesses a small size,with a length of about 30 mm after *** influence mechanism of vibration and temperature is revealed through theoretical analysis and numerical *** is proposed to filter out the interference of vibration by characteristic frequency analysis and to compensate for temperature by a two-probe *** anti-interference test verifies the effectiveness of this method,and it can reduce the error from 80.56%to 2.63%under the combined interference of vibration and temperature.

关键词： Anti-interference Bessel function Faraday magneto-optical effect leakage magnetic field transformer two-probe structure

Polyp recurrence after colonoscopic polypectomy

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Chinese Medical Journal 2020年第17期133卷 2114-2115页

作者： qi-pu wang Xu-Xia He Tao Xu Wen Ji Jia-Ming qian Jing-Nan Li Department of Gastroenterology Key Laboratory of Gut Microbiota Translational Medicine ResearchChinese Academy of Medical SciencesPeking Union Medical College HospitalBeijing 100730China Department of Epidemiology and Biostatistics Institute of Basic Medical Sciences Chinese Academy of Medical SciencesSchool of Basic Medicine Peking Union Medical CollegeBeijing 100005China Department of Gastroenterology Chongqing Key Laboratory of Translational Research for Cancer Metastasis and Individualized TreatmentChongqing University Cancer HospitalChongqing 400030China

Colorectal cancer(CRC)is the third most commonly diagnosed malignant tumor in the *** past few years have seen a remarkable increase in both incidence and mortality of CRC in developing countries like China,posing a serious threat to human *** is currently believed that about 70%of colorectal cancers are derived from conventional adenomas and 30%are derived from serrated adenomas.[1]As reported,CRC incidence rates per 10,000 person-years were 20.0 for advanced adenoma and 9.1 for non-advanced adenoma.[2]Colonoscopy,as an important tool for CRC screening and follow-up,can prevent the development of CRC by detecting and removing precancerous lesions,thereby effectively reducing the incidence and *** guidelines for post-polypectomy surveillance mostly recommend a 3-to 10-year interval according to baseline risk stratification.[3]However,there is no such guideline in China yet and doctors tend to perform the next colonoscopy within 1 year,which is much shorter than current international recommendations.

关键词： mortality colon removing

Copper-catalyzed asymmetric dearomatizing amination of 2-naphthols:Csp^(2)–N coupling via 1,3-reductive elimination

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Science China Chemistry 2024年第8期67卷 2694-2700页

作者： Aying Yihuo Maoping pu Zheng Tan Jibang Liao Jiuqi Tan qi-Lin Zhou Xiaohua Liu Xiaoming Feng Key Laboratory of Green Chemistry&Technology Ministry of EducationCollege of ChemistrySichuan UniversityChengdu 610064China Key Laboratory and Institute of Elemento-Organic Chemistry College of Chemistry Frontiers Science Centerfor New Organic MatterNankai UniversityTianjin300071China

An efficient catalytic asymmetric dearomatizing amination of 2-naphthols and phenols catalyzed by N,N′-dioxide-copper(I)complex as a chiral catalyst was presented.A variety of optically activeβ-naphthalenone compounds with a nitrogen-containing quaternary carbon stereocenter were obtained with high yield and enantioselectivity under mild reaction *** studies indicated that this Csp^(2)–N dearomatizing coupling proceeds via 1,3-reductive elimination of phenolate-Cu~Ⅲ-amino intermediate in five-membered ring transition *** origin of enantioselectivity has also been elucidated based on density functional theory calculations.

关键词： asymmetric catalysis amination dearomatization copper catalysis coupling reaction