检索结果-南通市图书馆

Optimal Scheduling of an Independent Electro-Hydrogen System with Hybrid Energy storage Using a Multi-Objective Standardization Fusion Method

在线全文

学校读者我要写书评

暂无评论

Energy Engineering 2025年第1期122卷 63-84页

作者： SuliangMa ZeqingMeng Mingxuan Chen Yuan Jiang School of Electrical and Control Engineering North China University of TechnologyBeijing100144China ChinaThree Gorges Technology Co. Ltd.Beijing100032China School of Automation and Electrical Engineering University of Science and Technology BeijingBeijing100083China

In the independent electro-hydrogen system(IEHS)with hybrid energy storage(HESS),achieving optimal scheduling is ***,it presents a challenge due to the significant deviations in values ofmultiple optimization objective functions caused by their physical *** deviations seriously affect the scheduling process.A novel standardization fusion method has been established to address this issue by analyzing the variation process of each objective function’s *** optimal scheduling results of IEHS with HESS indicate that the economy and overall energy loss can be improved 2–3 times under different optimization *** proposed method better balances all optimization objective functions and reduces the impact of their *** the cost of BESS decreases by approximately 30%,its participation deepens by about 1 ***,if the price of the electrolyzer is less than 15￥/kWh or if the cost of the fuel cell drops below 4￥/kWh,their participation will increase *** study aims to provide a more reasonable approach to solving multi-objective optimization problems.

关键词： Electro-hydrogen system multi-objective optimization standardization method hybrid energy storage system

Multi boron-doping effects in hard carbon toward enhanced sodium ion storage

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2025年第1期100卷 730-738页

作者： Peng Zheng Wang Zhou Ying Mo Biao Zheng Miaomiao Han Qin Zhong Wenwen Yang Peng Gao Lezhi Yang Jilei Liu College of Materials Science and Engineering Hunan Joint International Laboratory of Advanced Materials and Technology for Clean Energy Hunan Province Key Laboratory for Advanced Carbon Materials and Applied Technology Hunan University Greater Bay Area Institute for Innovation Hunan University Changsha Research Institute of Mining & Metallurgy Co. LTD.

Hard carbon （HC） has been considered as promising anode material for sodium-ion batteries （SIBs）.The optimization of hard carbon’s microstructure and solid electrolyte interface （SEI） property are demonstrated effective in enhancing the Na+storage capability,however,a one-step regulation strategy to achieve simultaneous multi-scale structures optimization is highly ***,we have systematically investigated the effects of boron doping on hard carbon’s microstructure and interface chemistry.A variety of structure characterizations show that appropriate amount of boron doping can increase the size of closed pores via rearrangement of carbon layers with improved graphitization degree,which provides more Na+storage ***-situ Fourier transform infrared spectroscopy/electrochemical impedance spectroscopy （FTIR/EIS） and X-ray photoelectron spectroscopy （XPS） analysis demonstrate the presence of more BC3and less B–C–O structures that result in enhanced ion diffusion kinetics and the formation of inorganic rich and robust SEI,which leads to facilitated charge transfer and excellent rate *** a result,the hard carbon anode with optimized boron doping content exhibits enhanced rate and cycling *** general,this work unravels the critical role of boron doping in optimizing the pore structure,interface chemistry and diffusion kinetics of hard carbon,which enables rational design of sodium-ion battery anode with enhanced Na+storage performance.

关键词： X ray photoelectron spectroscopy

Regulating charge heterogeneity of lithium-ion battery via tab design toward maximizing extreme fast-charging performance

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Progress in Natural Science:Materials International 2023年第5期33卷 660-667页

作者： Jun Yang Yuzuo Wang Yanqing Hu Dengfeng Liu Bin Yang Dianbo Ruan Zhijun Qiao Faculty of Mechanical Engineering and Mechanics Ningbo University Institute of Advanced Energy storage Technology and Equipment Ningbo University Hesheng Alternative Energy Technology Co. Ltd.

Construction of high-throughput electrical transmission structure via tab design is an effective way of developing high-power lithium-ion batteries(LIBs). In this paper, five types of 18650-cylindrical LIBs with different tab structures were prepared to analyze the mechanism of the effects of tab structure on battery performance,including internal resistance, C-rate performance, thermal and cycle. Research showed that the number of tabs and position were important factors, which strongly decided the internal resistance of battery. By adjusting tab structure, an extremely fast charging performance surpassing 10C can be achieved. Besides, the battery showed excellent cycle stability of more than 3000 cycles at 6C, which was proved to be due to optimizing the Li-ion concentration distribution of electrodes. The work also emphasized that excessive tabs contributed to no significant improvement in electrochemical performances at normal charging/discharging rates(<1C) for 18650 *** relationship between the operation conditions and tab design is established to further guide the manufacturing.

关键词： High-power lithium-ion batteries Tab structure Tabless electrolyte potential

Adaptive PID Control for Hydraulic Turbine Regulation Systems Based on INGWO and BPNN

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Protection and Control of Modern Power Systems 2024年第4期9卷 126-146页

作者： Jinbao Chen Gang He Yunhe Wang Yang Zheng Zhihuai Xiao the China Yangtze River Electric Power Co. Ltd.Wuhan 430000China the School of Power and Mechanical Engineering Wuhan UniversityWuhan 430072China the Hebei Fengning Pumped storage Co. Ltd.Chengde 050300China

To ensure system stability,the fixed-PID(F-PID)controller with small parameters is usually adopted in hydropower *** involves a slow setting speed and it is difficult to realize optimal control for full working *** address the problem,this paper designs a variable-PID(V-PID)controller for a hydraulic turbine regulation system(HTRS)based on the improved grey wolf optimizer(INGWO)and back propagation neural networks(BPNN).These can achieve excellent regulation under full working ***,the nonlinear HTRS model containing the nonlinear hydroturbine model is constructed and the stable domain is obtained using Hopf bifurcation theory to determine the available range of PID *** optimal PID parameters in typical working conditions are then calculated by the INGWO,and the optimal PID parameters are generalized through training the V-PID neural networks which take the optimal PID parameters as sample *** V-PID neural networks with different structures are compared to determine the optimal structure of the variable-PID controller *** V-PID controller-based nonlinear HTRS model shows that the PID parameters can be automatically adjusted online according to the working condition changes,realizing optimal control of hydropower units in full working conditions.

关键词： Hydraulic turbine regulation system back propagation neural networks Hopf bifurcation grey wolf optimizer variable-PID controller

Experimental Research on Gas-Liquid Two-Phase Spiral Flow in Horizontal Pipe

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

China Petroleum Processing & Petrochemical Technology 2012年第3期14卷 24-32页

作者： Wang Shuli Rao Yongchao Wu Yuxian Wang Xiaobing Changzhou University Jiangsu Key Laboratory of Oil-Gas storage and Transportation Technology PetroChina Longhui Automation Engineering Co. Ltd.

In view of the importance of gas-liquid two-phase spiral flow and the few research reports at home and abroad,the gas-liquid two-phase spiral flow patterns have been researched in a horizontal pipe with different parameters investigated by means of observation and a high-speed *** the appearance of spiral flow makes the distribution of twophase flow more complicated,the flow patterns appearing in the experiments were divided into the Spiral Wavy Stratified Flow(SWS),the Spiral Bubble Flow(SB),the Spiral Slug Flow(SS),the Spiral Linear Flow(SL),the Spiral Axial Flow(SA),and the Spiral Dispersed Flow(SD) by the observations and with reference to the predecessors' research achievements.A flow pattern map has been drawn *** influence of velocity,vane angle and vane area on flow pattern conversion boundary and pressure drop has been studied,with a solid foundation laid for the future research work.

关键词： gas-liquid two-phase spiral flow vane flow pattern flow pattern map experimental research

Molecular coordination-doping engineering enables adjustable ion transport channel based on MOFs-derived UIOLiTF-LLZTO ionic conductor

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2023年第32期163卷 113-120页

作者： Shuyu Yao Chenyong Li Bing Jia Haoran Xu Shihua Dong Jian Tian School of Materials Science and Engineering College of Energy Storage TechnologyShandong University of Science and TechnologyQingdao266590China Qingdao Haiwan Technology Industry Research Institute Co. Ltd.Qingdao Haiwan Group Co.Ltd.Qingdao266061China Rongcheng Hui De Environmental Protection Technology Co. Ltd.Weihai264300China

The inferior ionic conductivity of composite polymer electrolytes(CPEs)caused by grain boundary impedance is one of the critical *** ion transport channels at the molecular level can improve ionic conductivity and lithium-ion transference ***,UIO-66-NSO_(2)CF_(3)LiLi_(6.4)La_(3)Zr_(1.4)Ta_(0.6)O_(12)(UIOLiTF-LLZTO)ionic conductor derived from metal-organic frameworks(MOFs)was designed by a covalent grafted strategy of trifluoromethylsulfonyl(TF)group on UIOLiTF and a doping process of LLZTO,showing two new lithium-ion transfer channels driven by molecular coordinationdoping *** first channel along UIOLiTF-UIOLiTF was constructed due to the existence of the TF group on *** second channel along UIOLiTF-LLZTO was constructed due to the direct nanometer contact interface between the opened channel of UIOLiTF and *** TF group acts as“claws”to capture and transfer lithium-ion along the different channels,facilitating improving ionic conductivity and reducing grain boundary *** from the molecular coordination-doping engineering,UIOLiTF-LLZTO exhibits high ionic conductivity of 9.86×10^(-4)S cm^(-1),a large lithium-ion transference number of 0.79,and a wide electrochemical window of 5.35 ***,all-solid-state Li|UIOLiTF-LLZTO|LiFePO4 batteries show a high specific capacity of 164.5 mAh g^(-1)and 155.6 mAh g^(-1)at 0.2 C and 0.5 C,***,UIOLiTF-LLZTO demonstrates the way towards the development of MOFs-based CPEs for all-solid-state lithium batteries with high performance.

关键词： Metal-organic frameworks LLZTO Ionic conductor Lithium-ion transport channel Solid-state battery

Generalized Energy storage Allocation Strategies for Load Aggregator in Hierarchical Electricity Markets

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Modern Power Systems and Clean Energy 2022年第4期10卷 1021-1031页

作者： Weiqing Sun Wei Liu Wei Xiang Jie Zhang School of Mechanical Engineering University of Shanghai for Science and TechnologyShanghai 200093China Shanghai Shenergy New Power storage R&D Co. Ltd.Shanghai 201419China

The uncertainty of user-side resource response will affect the response quality and economic benefit of load aggregator(LA).Therefore,this paper regards the flexible user-side resources as a virtual energy storage(VES),and uses the traditional narrow sense energy storage(NSES)to alleviate the uncertainty of *** order to further enhance the competitive advantage of LA in electricity market transactions,the operation mechanism of LA in day-ahead and real-time market is analyzed,***,truncated normal distribution is used to simulate the response accuracy of VES,and the response model of NSES is constructed at the same ***,the hierarchical market access index(HMAI)is introduced to quantify the risk of LA being eliminated in the market ***,combined with the priority response strategy of VES and HMAI,the capacity allocation model of NSES is *** the capacity model is nonlinear,Monte Carlo simulation and adaptive particle swarm optimization algorithm are used to solve *** order to verify the effectiveness of the model,the data from PJM market in the United States is used for *** results show that the model established can provide the effective NSES capacity allocation strategy for LA to compensate the uncertainty of VES response,and the economic benefit of LA can be increased by 52.2%at its *** the reasonable NSES capacity allocation,LA is encouraged to improve its own resource level,thus forming a virtuous circle of market competition.

关键词： Load aggregator generalized energy storage narrow sense energy storage capacity allocation strategy ancillary service market

Influence of slug flow on flow fields in a gas–liquid cylindrical cyclone separator:A simulation study

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemical Engineering 2020年第8期28卷 2075-2083页

作者： Xiaoming Luo Jing Ren Tong Chen YibinWang Yuling Lü Limin He Shandong Key Laboratory of Oil&Gas storage and Transportation Safety China University of Petroleum(East China)Qingdao 266580China Sinopec Luoyang Engineering Co. Ltd.Luoyang 471003China

A simulation method for slug flow based on the VOF multiphase flow model was implemented in ANSYS?Fluent via a user-defined function(UDF)and applied to the dissipation of liquid slugs in the inlet pipe of a gas–liquid cylindrical cyclone(GLCC)separator while varying the expanding diameter ratio and angle of *** dissipation of liquid slug in inlet pipe is analyzed under different expanding diameter ratios and inclination *** the inlet pipe,it is found that increasing expanding diameter ratio and inclination angle can reduce the liquid slug stability and enhancing the effect of gravity,which is beneficial to slug flow *** the cylinder,increasing the expanding diameter ratio can significantly reduce the liquid carrying depth of the gas phase but result in a slightly increase of the gas content in the liquid phase ***,increasing the inclination angle results in a decrease in the carrying depth of liquid in the vapor phase,but enhances gas–liquid mixing and increases the gas-carrying depth in the liquid *** into consideration the dual effects of slug dissipation in the inlet pipe and carrying capacity of gas/liquid spaces in the cylinder,the optimal expanding diameter ratio and inclination angle values can be determined.

关键词： GLCC Slug simulation Flow pattern Liquid slug dissipation Cyclonic flow field analysis

Analysis and optimization of thermal management system for cylindrical power battery based on distributed liquid cooling plates

在线全文

学校读者我要写书评

暂无评论

Science China Technological Sciences 2024年第12期67卷 3695-3706页

作者： ZHAO Yang ZHANG Tao WANG Chun TANG YinBo XI Huan National Innovation Platform (Center) for Industry-Education Integration of Energy storage Technology Xi'an Jiaotong University Key Laboratory of Thermo-Fluid Science and Engineering of Ministry of Education School of Energy and Power Engineering Xi'an Jiaotong University School of Future Technology Xi'an Jiaotong University Ningbo Deye Energy storage Technology Co. Ltd.

To ensure the battery works in a suitable temperature range, a new design for distributed liquid cooling plate is proposed, and a battery thermal management system(BTMS) for cylindrical power battery pack based on the proposed cooling plate is also investigated. To verify the accuracy of the battery model and battery pack numerical calculation model used for simulation, an experiment is conducted for the liquid cooling BTMS. The influence of key working parameters, including the cooling water inlet flow, ambient temperature and working conditions, are investigated. The results show that at the discharge rate of 3 C, the best cooling performance can be achieved when the total inlet mass flow rate is 3.2 g/s and the flow distribution is 3:1:1:3. The obtained maximum temperature is 29.6°C and the maximum temperature difference is 2.1°C. When the ambient temperature is in the range of 20°C to 50°C, the proposed BTMS can keep the temperature of battery pack in the proper range. Finally, different inlet flow rates are recommended according to different battery working states.

关键词： lithium battery battery model battery thermal management liquid cooling plate distributed cooling