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CSEE Journal of Power and Energy Systems 2024年第2期10卷 518-529页

作者： Lianyong Zuo Shengshi Wang Yong Sun Shichang Cui Jiakun Fang Xiaomeng Ai Baoju Li Chengliang Hao Jinyu Wen state Key Laboratory of Advanced Electromagnetic Technology School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430073China state Grid Jilin Electric Power company Changchun 130021China

Fossil fuel depletion and environmental pollution problems promote development of renewable energy(RE)*** increasing penetration of RE,operation security and economy of power systems(PS)are greatly impacted by fluctuation and intermittence of renewable *** this paper,information gap decision theory(IGDT)is adapted to handle uncertainty of wind power *** on conventional IGDT method,linear regulation strategy(LRS)and robust linear optimization(RLO)method are integrated to reformulate the model for rigorously considering security *** a robustness assessment method based on hybrid RLO-IGDT approach is proposed for analyzing robustness and economic performance of ***,a risk-averse linearization method is adapted to convert the proposed assessment model into a mixed integer linear programming(MILP)problem for convenient optimization without robustness ***,results of case studies validate superiority of proposed method in guaranteeing operation security rigorously and effectiveness in assessment of RSR for PS without *** Terms-Hybrid RLO-IGDT approach,information gap decision theory(IGDT),operation security,robustness assessment,robustness security region(RSR).

关键词： IGDT approach information gap decision theory(IGDT) operation security robustness assessment robustness security region(RSR)

Durable dual-state duplex Si-HfO_(2)with excellent oxidation and cracking resistance

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Journal of Advanced Ceramics 2024年第3期13卷 388-401页

作者： Lin Chen Jing-Chuan Luo Wen-Qi Yang Chang-Jiu Li Guan-Jun Yang state Key Laboratory for Mechanical Behavior of Materials School of Materials Science and EngineeringXi’an Jiaotong UniversityXi’an 710049China Xi’an Aerospace Engine company Limited in CASC Xi’an 710065China

The lifetime of Si bond coatings in environmental barrier coatings is constrained by phase-transition-induced cracking of the SiO_(2)*** this study,Si-HfO_(2)dual-state duplex composite materials are proposed to address this issue by partially forming HfSiO_(4)and minimizing the SiO_(2)*** as-prepared composite exhibited a structure comprising discrete HfO_(2)“bricks”embedded in a continuous Si“mortar”,while the oxidized state transformed into discrete HfSiO_(4)“bricks”within continuous thin SiO_(2)“mortars”.The results indicate that continuous thin SiO_(2)contributes to reducing the oxidation rate to a level comparable to that of pure Si,and discrete HfSiO_(4)particles aid in relieving phase transition-induced stress and inhibiting crack propagation,thereby enhancing oxidation and cracking resistance ***,the composite with 20 mol%HfO_(2)and a mean particle size of~500 nm at 1370℃exhibited a service lifetime 10 times greater than that of pure *** research provides valuable insights for designing Si-based bond coatings with improved service lifetime.

关键词： oxidation environmental barrier coatings(EBCs) phase transition cracking bond coatings

Analytical evaluation of steady-state solute distribution in through- diffusion and membrane behavior test under non-perfectly flushing boundary conditions

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Journal of Rock Mechanics and Geotechnical engineering 2024年第1期16卷 258-267页

作者： Guannian Chen Yuchao Li Kristin MSample-Lord Shan Tong School of Civil&environmental engineering and Geography science Ningbo UniversityNingbo315211China MOE Key Laboratory of Soft Soils and Geoenvironmental engineering College of Civil Engineering and ArchitectureZhejiang UniversityHangzhou310058China Ningbo ZCONE High-tech company Limited Ningbo315000China Department of Civil and environmental engineering Villanova UniversityVillanovaPAUSA

The through-diffusion and membrane behavior testing procedure using a closed-system apparatus has been widely used for concurrent measurement of diffusion and membrane efficiency coefficients of low-permeability clay-based barrier ***,the common assumption of perfectly flushing conditions at the specimen boundaries could induce errors in analyses of the diffusion coefficients and membrane *** this study,an innovative pseudo three-dimensional(3D)analytical method was proposed to evaluate solute distribution along the boundary surfaces of the soil-porous disks system,considering the non-perfectly flushing *** results were consistent with numerical models under two scenarios considering different inflow/outflow *** proposed model has been demonstrated to be an accurate and reliable method to estimate solute distributions along the *** calculated membrane efficiency coefficient and diffusion coefficient based on the proposed analytical method are more accurate,resulting in up to 50%less relative error than the traditional approach that adopts the arithmetic mean value of the influent and effluent *** retar-dation factor of the clay specimen also can be calculated with a revised cumulative mass ***,the simulated transient solute transport matched with experimental data from a multi-stage through-diffusion and membrane behavior test,validating the accuracy of the proposed method.

关键词： Diffusion testing Membrane behavior Coupled transport Clay barrier Transport modeling

Effects of Diesel Concentration on the Thermal Conductivity,Specific Heat Capacity and Thermal Diffusivity of Diesel-Contaminated Soil

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Journal of Thermal science 2024年第2期33卷 696-709页

作者： WU Yuhao WU Yuefei LUO Gubai ZHANG Teng WANG Qing FAN Liwu SONG Xin YU Zitao Key Laboratory of Clean Energy and Carbon Neutrality of Zhejiang Province Zhejiang UniversityHangzhou310027China state Key Laboratory of Clean Energy Utilization Zhejiang UniversityHangzhou310027China Institute of Thermal science and Power Systems School of Energy EngineeringZhejiang UniversityHangzhou310027China Center environmental Protection Technology company Limited Beijing100176China Institute of Soil science Chinese Academy of SciencesNanjing210008China

High energy consumption is a serious issue associated with in situ thermal desorption(TD)remediation of sites contaminated by petroleum hydrocarbons(PHs).The knowledge on the thermophysical properties of contaminated soil can help predict accurately the transient temperature distribution in a remediation site,for the purpose of energy ***,such data are rarely reported for PH-contaminated *** this study,by taking diesel as a representative example for PHs,soil samples with constant dry bulk density but different diesel mass concentrations ranging from 0% to 20% were prepared,and the variations of their thermal conductivity,specific heat capacity and thermal diffusivity were measured and analyzed over a wide temperature range between 0℃ and 120℃.It was found that the effect of diesel concentration on the thermal conductivity of soil is negligible when it is below 1%.When diesel concentration is below 10%,the thermal conductivity of soil increases with raising the ***,when diesel concentration becomes above 10%,the change of the thermal conductivity of soil with temperature exhibits the opposite *** is mainly due to the competition between soil minerals and diesel,because the thermal conductivity of minerals increases with temperature,whereas the thermal conductivity of diesel decreases with *** analysis results showed that,compared with temperature,the diesel concentration has more significant effects on soil thermal *** of the diesel concentration,with the increase of temperature,the specific heat capacity of soil increases,while the thermal diffusivity of soil *** addition,the results of a control experiment exhibited that the relative differences of the thermal conductivity of the soil samples containing the same concentration of both diesel and a pure alkane are all below 10%,indicating that the results obtained with diesel in this study can be extended to the family of PHs.A theo

关键词： contaminated soil diesel concentration thermal conductivity specific heat capacity thermal diffusivity thermal desorption fractal model

The influence of patterned microporous layer on the proton exchange membrane fuel cell performances

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Nano Research 2024年第7期17卷 6095-6101页

作者： Shunzhong Wang Kadi Hu Wei Chen Yali Cao Linan Wang Zhichang Wang Lirui Cui Mingzheng Zhou Wei Zhu Hui Li Zhongbin Zhuang state Key Lab of Organic-Inorganic Composites Beijing University of Chemical TechnologyBeijing 100029China state Power Investment Corporation Hydrogen Energy company Ltd.Beijing 102600China Beijing Advanced Innovation Center for Soft Matter science and engineering Beijing University of Chemical TechnologyBeijing 100029China Beijing Key Laboratory of Energy environmental Catalysis Beijing University of Chemical TechnologyBeijing 100029China

The ordered membrane electrode assembly(MEA)has gained much attention because of its potential in improving mass ***,a comprehensive study was conducted on the influence of the patterned microporous layer(MPL)on the proton exchange membrane fuel cell *** patterned MPL is employed,grooves are generated between the catalyst layer and the gas diffusion *** is found that the grooves do not increase the contact resistance,and it is beneficial for water *** the MEA works under low humidity scenarios,the MEA with patterned MPL illustrated higher performance,due to the reduced inner resistance caused by improved water retention,leading to increased ionic ***,when the humidity is higher than 80%or working under high current density,the generated water accumulated in the grooves and hindered the oxygen mass transport,leading to a reduced MEA performance.

关键词： microporous layer patterned proton exchange membrane fuel cell mass transport humidity water reduction

Assessment on gas-polyethylene terephthalate solid interface partial discharge properties of C4F7N/CO_(2)gas mixture for eco-friendly gas insulating transformer

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High Voltage 2024年第1期9卷 35-45页

作者： Song Xiao Yifan Wang Chenhua Ren Haoran Xia Yue Zhao Jingzi Qin Xiaoxing Zhang Yi Luo Yi Li state Key Laboratory of Power Grid environmental Protection School of Electrical Engineering and AutomationWuhan UniversityWuhanHubeiChina Beijing International S&T Cooperation Base for Plasma science and Energy Conversion Institute of Electrical EngineeringChinese Academy of SciencesBeijingChina state Grid Anhui Electric Power company Anhui Electric Power Research Institute HefeiAnhuiChina Hubei engineering Research Center for Safety Monitoring of New Energy and Power Grid Equipment School of Electrical and Electronic EngineeringHubei University of TechnologyWuhanHubeiChina

The eco-friendly insulating gas perfluoroisobutyronitrile(C_(4)F_(7)N)is potentially used in gas-insulated transformers(GIT)to replace sulphur hexafluoride(SF_(6)).However,evaluation of the long-term insulation reliability and gas–solid interface discharge decomposition characteristics of the gas–solid film insulation structure in GIT is *** authors simulated the gas–solid film insulation structure in GIT and explored the interface partial discharge(PD)characteristics of C4F7N/CO_(2)gas mixture with polyethylene terephthalate(PET).The effect of gas pressure,mixing ratio on gas–solid interface gas decomposition,PET degradation was investigated,and the interaction mechanism was *** is found that the interface PD generated three degradation regions on a PET *** gas–solid interface reaction in the electrode contact region and the discharge development trace was significantly higher than that of halation *** content of gas decomposition products decreases with the increase of gas pressure and the PD intensity of SF6-PET is inferior to that of C_(4)F_(7)N/CO_(2)under the same *** results provide reference for the development and application of C_(4)F_(7)N/CO_(2)based GIT.

关键词： interface solid insulation

Regulation Flexibility Assessment and Optimal Aggregation Strategy of Greenhouse Loads in Modern Agricultural Parks

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Protection and Control of Modern Power Systems 2024年第3期9卷 98-111页

作者： Shiwei Xia Liuyang Cai Mingze Tong Ting Wu Peng Li Xiang Gao IEEE the School of Electrical and Electronic engineering North China Electric Power UniversityBeijingChina North china Electric Power University BeijingChina the School of Mechanical engineering and Automation Harbin Institute of TechnologyShenzhen 518055China the Economic and Technical Research Institute of state Grid Henan Electric Power company Shenzhen Polytechnic University ShenzhenChina

With advances in modern agricultural parks,the rural energy structure has undergone profound change,leading to the emergence of an agricultural energy *** integrated system combines agricultural energy utilization,the information internet,and agricultural ***,this study proposes a regulation flexibility assessment approach and optimal aggregation strategy of greenhouse loads(GHLs)for modern agricultural ***,taking into account the operational characteristics of typical GHLs,refined load demand models for lighting,humidification,and temperature-controlled loads are ***,the recursive least squares method-based parameter identification method is designed to accurately determine key GHL model ***,based on the regulation flexibility of quantitatively evaluated GHLs,GHLs are optimally aggregated into multiple flexible aggregators considering minimal operational cost and greenhouse environmental *** results indicate that the proposed regulation flexibility assessment approach and optimal aggregation strategy of GHLs can alleviate the peak regulation pressure on power grids by flexibly shifting the load demands of GHLs.

关键词： Agricultural park,greenhouse load parameter identification,regulation flexibility,optimal aggregation of GHLs

Activation of peroxymonosulfate by FeVO_(3-x)for the degradation of carbamazepine:Vanadium mediated electron shuttle and oxygen vacancy modulated interface chemistry

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Chinese Chemical Letters 2024年第1期35卷 435-440页

作者： Leiduo Lai Hongyu Zhou Yichen Hong Mengfan Luo Yang Shi Heng Zhang Zhaokun Xiong Gang Yao Bo Lai state Key Laboratory of Hydraulics and Mountain River engineering College of Architecture and EnvironmentSichuan UniversityChengdu 610065China Sino-German Centre for Water and Health Research Sichuan UniversityChengdu 610065China Chengdu Baixi environmental Technology company Chengdu 610065China d Institute of environmental engineering RWTH Aachen UniversityGermany

Fast Fe(III)/Fe(II)circulation in heterogeneous peroxymonosulfate(PMS)activation remains as a bottleneck issue that restricts the development of PMS based advanced oxidation ***,we proposed a facile ammonia reduction strategy and synthesized a novel FeVO3-x catalysts to activate PMS for the degradation of a typical pharmaceutical,carbamazepine(CBZ).Rapid CBZ removal could be achieved within 10 min,which outperforms most of the other iron or vanadium-based *** paramagnetic resonance analysis and chemical probe experiments revealed SO_(4)^(·-),·OH,O_(2)^(·-)and high valent iron(Fe(IV))were all generated in this system,but SO4·-and Fe(IV)primarily contributed to the degradation of ***,X-ray photoelectron spectroscopy and X-ray adsorption spectroscopy indicated that both the generated low-valent V provides and oxygen vacancy acted as superior electron donors and accelerated internal electron transfer via the unsaturated V-O-Fe ***,the proposed system also exhibited satisfactory performance in practical *** work provides a promising platform in heterogeneous PMS activation.

关键词： Peroxymonosulfate Fe(III) Fe(II)cycle Electron shuttles Oxygen vacancy Bimetallic catalysts

Water Scarcity in Conakry, Guinea: Challenges and Proposed Strategies for a Way Forward

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Journal of Water Resource and Protection 2024年第4期16卷 264-280页

作者： Bernard Lassimo Diawara Gerald D. S. Quoie Jr Zhuo Li Justin Junior Loua College of environmental science and engineering Tongji University Shanghai China UNEP-Tongji Institute of Environment for Sustainable Development Tongji University Shanghai China state Key Laboratory of Pollution Control and Resources Reuse Tongji University Shanghai China Business School Sichuan University Chengdu China

The capital of Guinea, Conakry, faces a notable difficulty due to a water shortage, which is worsened by the rapid increase in population and urban development. The Guinean Water company (SEG) faces challenges in supplying water to the entire city due to its limited area of approximately 420 km2 and a population of 2 million. Moreover, the population growth rate is anticipated to increase dramatically, exacerbating the difficulty of fulfilling future water requirements. As a result, this study employs data from the Knoema website and the Institute of National Statistics of Guinea (INS) to examine the water production and distribution process by the SEG. The study examines the challenges related to water scarcity in Conakry and suggests strategies to assist the city in managing the present circumstances and planning for the future. The primary objective is to get a long-lasting water supply and uphold water quality to advance public health.

关键词： Water Scarcity Conakry Population Growth SDGs SEG

Comprehensive Evaluation of Distributed PV Grid-Connected Based on Combined Weighting Weights and TOPSIS-RSR Method

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Energy engineering 2024年第3期121卷 703-728页

作者： Yue Yang Jiarui Zheng Long Cheng Yongnan Zhu Hao Wu Key Laboratory of Modern Power System Simulation and Control&Renewable Energy Technology Ministry of Education(Northeast Electric Power University)Jilin132012China Siping Suburban Power Supply company State Grid Jilin Electric Power Co.Ltd.Siping136000China

To effectively quantify the impact of distributed photovoltaic(PV)access on the distribution network,this paper proposes a comprehensive evaluation method of distributed PV grid connection combining subjective and objective combination of assignment and technique for order preference by similarity to an ideal solution(TOPSIS)—rank sum ratio(RSR)(TOPSIS-RSR)*** on the traditional distribution network evaluation system,a comprehensive evaluation system has been *** fully considers the new development requirements of distributed PV access on the environmental friendliness and absorptive capacity of the distribution grid and comprehensively reflects the impact of distributed PV grid *** analytic hierarchy process(AHP)was used to determine the subjective weights of the primary indicators,and the Spearman consistency test was combined to determine the weights of the secondary indicators based on three objective assignment *** subjective and objective combination weights of each assessment indicator were calculated through the principle of minimum *** the distance between the indicators to be evaluated and the positive and negative ideal solutions,the relative closeness ranking,and qualitative binning by TOPSIS-RSR method to obtain the comprehensive evaluation results of different *** setting up different PV grid-connected scenarios and utilizing the IEEE33 node simulation algorithm,the correctness and effectiveness of the proposed subject-object combination assignment and integrated assessment method are verified.

关键词： Distributed PV grid-connected comprehensive evaluation evaluation indicator system combined subjective and objective empowerment TOPSIS-RSR method