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Decomposition analysis of CO_(2) emissions of electricity and carbon-reduction policy implication: a study of a province in China based on the logarithmic mean Divisia index method

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Clean Energy 2023年第2期7卷 340-349页

作者： Fuyuan Yang Xiaobin Yang Xueqin Tian Xinlei Wang Tong Xu State Grid Economic and Technological Research Institute Co. LtdBeijing102209China State Grid Jiangxi Electric Power Research Institute State Grid Jiangxi Electric Power Co.LtdNanchangChina

As the proportion of electricity in final energy consumption gradually increases,CO_(2) emissions reduction actions in the power system will become the key to achieving China’s carbon-peak and carbon-neutrality goals.It is essential to analyse and quantify the driving forces of CO_(2) emissions from electricity generation in the fossil-rich area in China.This paper aims to identify the characteristics of CO_(2) emissions generated by electricity and provide a basis for formulating CO_(2)-reduction policies in power systems.First,we analyse the current state of CO_(2) emissions from electricity generation in Anhui Province that was dominated by fossil energy during the period 2010-19.Then,we apply the logarithmic mean Divisia index method to find the nature of the factors influencing the changes in CO_(2) emissions.Finally,we analyse the CO_(2)-reduction measures of each side of the source-network-load-storage of the power system in Anhui through a power-system carbon-reduction path analysis model proposed in this study and provide policy suggestions.The results showed the following.(i)CO_(2) emissions in Anhui Province continued to increase from 2010 to 2019 and the trend in the growth rate of CO_(2) emissions presented approximately a u-shaped curve.(ii)Economic activity has always been the dominant factor driving the growth of electricity CO_(2) emis-sions.The increase in the proportion of renewable energy in power generation,the improvement in thermal power-conversion efficiency and the decrease in the intensity of power consumption are the three major driving factors for the reduction in CO_(2) emissions from power generation in Anhui.(iii)The CO_(2)-reduction measures of the power system are provided in each link of the source-network-load-storage,such as developing the photovoltaic industry and building energy storage,upgrading and transforming coal-fired power stations,redu-cing the loss rate of transmission lines on the grid side and improving the efficiency of the utilization of electricity on the user s

关键词： CO_(2)emissions LMDI electricity generation carbon-reduction measures

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Transient Simulation and Optimization of Regional Integrated Energy System

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Energy Engineering 2022年第3期119卷 1031-1045页

作者： Xueqin Tian Mengran Cui Tong Xu Jinfei Sun Xinlei Wang Jiangxiang Guo De-Gejirifu Na Wang State Grid Economic and Technological Research Institute Co. Ltd.Beijing102209China Qingdao University of Technology Qingdao266033China

A modeling method of regional integrated energy system based on bus method and transient simulation is proposed,and the system optimization is based on the dynamic balance of supply and demand in the whole year energy supply cycle.A CCHP systemof gas turbine coupled with ground source heat pump and electric refrigeration unit is constructed.The energy relationship of the systemis described by bus structure,and the transient calculationmodel is built on TRNSYS platform.The weighted sum of annual total cost saving rate,primary energy saving rate and environmental pollutant shadow cost saving rate is taken as the optimized objective function,and on the basis of annual dynamic balance,the Hooke-Jeeves algorithm is used for optimization of the system configuration.A complex commercial area in Beijing is taken as an example,and different weighting coefficients are set for optimization of the system configuration.The results show that,from the perspective of economy,environmental benefit and primary energy consumption,performance of the system increases and then decreases with rise of gas turbine power;under the simulated cooling/heating load,the maximum number of optimum configuration is seen in the combination of 35 kW gas turbine+723 kW GSHP and 1178 kW electric chiller;in comparison with traditional distributed system,the annual cost saving rate,primary energy saving rate and environmental pollutant shadow cost saving rate of the system are 29.4%,49.6%and 58.2%,respectively.

关键词： Integrated energy system transient simulation multi-objective optimization

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Cross-Regional Analysis of New Energy Consumption Capacity

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Journal of Beijing Institute of Technology 2020年第1期29卷 38-44页

作者： Shiyi Ma Cong Duan Tong Xu Xinlei Wang Xueqin Tian Liang Wang Beijing Huajian Power Design and Research Institute Beijing 102209China School of Automation Beijing Institute of TechnologyBeijing 100081China

An assessment of the new energy consumption capacity of the grid can help to improve new energy efficiency and its planning and development.The annual capacity of multi-regional new energy consumption is affected by the new energy installed capacity of each region,the output of thermal power units,the load size,and the exchange capacity between regional tie lines.In this paper,a real-time data processing method of a province is proposed,and a raw data processing method with dimensionality reduction equivalent is proposed.From the perspective of new installed capacity of new energy across regions,we obtain the assessment of the capacity of wind power photovoltaic bases in a given scenario,and propose new installed capacity for wind,light and energy storage power stations.

关键词： new energy consumption new energy assessment mixed integer programming production simulation

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Dynamic Simulation and Performance Analysis on Multi-Energy Coupled CCHP System

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Energy Engineering 2022年第2期119卷 723-737页

作者： Xueqin Tian Jinfei Sun Tong Xu Mengran Cui Xinlei Wang Jianxiang Guo De-gejirifu Na Wang State Grid Economic and Technological Research Institute Co. Ltd.Beijing102209China Qingdao University of Technology Qingdao266033China

Although the Combined Cooing,Heating and Power System(hereinafter referred to as“CCHP”)improves the capacity utilization rate and energy utilization efficiency,single use of CCHP system cannot realize dynamic matching between supply and demand loads due to the unbalance features of the user’s cooling and heating loads.On the basis of user convenience and wide applicability of clean air energy,this paper tries to put forward a coupled CCHP system with combustion gas turbine and ASHP ordered power by heat,analyze trends of such parameters as gas consumption and power consumption of heat pump in line with adjustment of heating load proportion of combustion gas turbine,and optimize the system ratio in the method of annual costs and energy environmental benefit assessment.Based on the analysis of the hourly simulation and matching characteristics of the cold and hot load of the 100 thousand square meter building,it is found that the annual cost of the air source heat pump is low,but the energy and environmental benefits are poor.It will lead to 6.35%shortage of cooling load in summer.Combined with the evaluation method of primary energy consumption and zero carbon dioxide emission,the coupling system of CHHP and air source heat pump with 41%gas turbine load ratio is the best configuration.This system structure and optimization method can provide some reference for the development of CCHP coupling system.

关键词： CCHP(Combined Cooling,Heating and Power System) ASHP(Air Source Heat Pump) annual costs absorption cooling transient simulation

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High-Index Faceted Nanocrystals as Highly Efficient Bifunctional Electrocatalysts for High-Performance Lithium-Sulfur Batteries

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Nano-Micro Letters 2022年第2期14卷 324-338页

作者： Bo Jiang Da tian Yue Qiu xueqin Song Yu Zhang Xun Sun Huihuang Huang Chenghao Zhao Zhikun Guo Lishuang Fan Naiqing Zhang State Key Laboratory of Urban Water Resource and Environment School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001People’s Republic of China Academy of Fundamental and Interdisciplinary Sciences Harbin Institute of TechnologyHarbin 150001People’s Republic of China School of Energy Science and Engineering Harbin Institute of TechnologyHarbin 150001People’s Republic of China

Precisely regulating of the surface structure of crystalline materials to improve their catalytic activity for lithium polysulfides is urgently needed for high-performance lithium-sulfur(Li-S)batteries.Herein,high-index faceted iron oxide(Fe_(2)O_(3))nanocrystals anchored on reduced graphene oxide are developed as highly efficient bifunctional electrocatalysts,effectively improving the electrochemical performance of Li-S batteries.The theoretical and experimental results all indicate that high-index Fe_(2)O_(3)crystal facets with abundant unsaturated coordinated Fe sites not only have strong adsorption capacity to anchor polysulfides but also have high catalytic activity to facilitate the redox transformation of polysulfides and reduce the decomposition energy barrier of Li_(2)S.The Li-S batteries with these bifunctional electrocatalysts exhibit high initial capacity of 1521 mAh g^(-1)at 0.1 C and excellent cycling performance with a low capacity fading of 0.025%per cycle during 1600 cycles at 2 C.Even with a high sulfur loading of 9.41 mg cm^(-2),a remarkable areal capacity of 7.61 mAh cm^(-2)was maintained after 85 cycles.This work provides a new strategy to improve the catalytic activity of nanocrystals through the crystal facet engineering,deepening the comprehending of facet-dependent activity of catalysts in Li-S chemistry,affording a novel perspective for the design of advanced sulfur electrodes.

关键词： High-index faceted Fe_(2)O_(3)nanocrystals Unsaturated coordinated Lithium-sulfur batteries Electrocatalysis

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Heterogeneous Mediator Enabling Three-Dimensional Growth of Lithium Sulfide for High-Performance Lithium-Sulfur Batteries

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Energy & Environmental Materials 2022年第4期5卷 1214-1221页

作者： Da tian xueqin Song Yue Qiu Xun Sun Bo Jiang Chenghao Zhao Yu Zhang Xianzhu Xu Lishuang Fan Naiqing Zhang School of Chemistry and Chemical Engineering Harbin Institute of TechnologyHarbin 150001China Academy of Fundamental and Interdisciplinary Sciences Harbin Institute of TechnologyHarbin 150001China State Keys Laboratory of Urban Water Resource and Environment Harbin Institute of TechnologyHarbin 150001China

Two-dimensional(2D)deposition regime of insulating lithium sulfide(Li_(2)S)is a major obstacle to achieve high reversible capacity in the conventional glyme-based lithium-sulfur(Li-S)batteries as it leads to rapid loss of active electrode surface and low sulfur utilization.Achieving three-dimensional(3D)growth of Li_(2)S is therefore considered to be necessary,but the available strategies are mainly based on the electrolyte manipulations,which inevitably lead to added complexity of the electrode-electrolyte compatibility and,in particular,instability of the lithium anode.In this work,we have developed a heterogeneous polysulfide mediator composed of discrete Mo_(5)N_(6) anchored on graphene,which functions on the cathode side,to regulate the deposition mode of Li_(2)S.Mo_(5)N_(6) can efficiently boost the formation of Li_(2)S as demonstrated by a series of experimental and computational results.More importantly,the discrete distribution of Mo_(5)N_(6) nucleants on graphene postpones the merging of adjacent Li_(2)S nuclei to promote their isotropic growth.Thus,3D deposits of Li_(2)S is guided by the heterogeneous mediator.Benefiting from these unique superiorities,Li-S cells with high rate capability of 954 mAh g^(-1) at 2 C and long cycle life exceeding 1000 cycles are realized without advanced lithium anode protection.

关键词： electrocatalysis lithium sulfide nucleation lithium-sulfur batteries polysulfide redox reaction shuttle effect

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A novel cataplasma matrix of traditional Chinese medicine

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Frontiers of Chemical Science and Engineering 2010年第1期4卷 91-95页

作者： Jing tian Xiaolei ZHANG xueqin ZHOU Research Center of Traditional Chinese Medicine Tianjin University of Traditional Chinese MedicineTianjin 300193China Engineering Research Center of Modern Chinese Medicine Discovery and Preparation Technique Ministry of EducationTianjin 300193China School of Chemical Engineering and Technology Tianjin UniversityTianjin 300072China

The aim of this paper was to develop a cataplasma matrix that can be applicable to both watersoluble and liposoluble drugs.The gellan gum and konjaku were employed as the scaffold materials of the matrix.With polyacrylic acid sodium and oligosaccharides as tacktifier,the formula of the cataplasma matrix was optimized in the orthogonal method as:gellan gum 0.4 g,xanthan gum 0.03 g,konjac glue 0.1 g,glycerin 4 g,Gluco-Adhesive T(GAT)6 g,Gluco-Adhesive E(GAE)6 g,polyacrylic acid sodium 0.22 g,and sorbitol 3 g.The 180°peel strength,the tensile strength and the elongation at break was 3.043 N,0.275 MPa and 91.05%,respectively.Furthermore,the drug-compatibilities of the matrix were investigated with baicalin,berberine and curcumin,which were used as the models of hydrophilic,poor-water-soluble and hydrophobic ingredients.The drug contents could reach 4.12%,2.42%and 3.75%,while the in vitro release rate were measured as,361.79,55.85 and 104.41μg·cm^(-2)·h^(-1)for baicalin,berberine and curcumin,respectively.These results indicated that the obtained matrix had good drug-compatibility and drug-release properties for different ingredients.

关键词： cataplasma novel matrix traditional Chinese medicine in vitro drug release

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循证决策在企业档案知识管理中的应用

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档案学通讯 2023年第3期 63-70页

作者：赵雪芹李天娥湖北大学历史文化学院武汉430062

企业档案作为企业生产、经营、管理活动的真实记录,不仅是企业重要知识资源,同时对企业决策也起到促进作用。循证决策连接了企业档案与决策之间的关系,为企业决策提供了科学的框架。立足于循证决策视角,分析循证决策应用于企业档案的必... 详细信息

企业档案作为企业生产、经营、管理活动的真实记录,不仅是企业重要知识资源,同时对企业决策也起到促进作用。循证决策连接了企业档案与决策之间的关系,为企业决策提供了科学的框架。立足于循证决策视角,分析循证决策应用于企业档案的必要性和可行性,把握企业档案知识管理和循证决策的基本流程,构建基于循证决策的企业档案知识管理流程模型,并对模型运行机制进行分析。研究发现,与传统经验决策相比,循证决策在企业档案知识管理中的应用,不仅可以有效降低企业决策过程中无效信息的干扰,提高企业决策效率,还可以提升档案在企业资源体系中的地位,最终助推企业档案管理范式的转变与企业循证决策的发展。

关键词：循证决策企业档案知识管理最佳证据

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基于信息不对称视角的建设项目档案安全监管演化博弈研究

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档案学研究 2023年第3期 26-33页

作者：赵雪芹李天娥湖北大学历史文化学院武汉430062

档案事业的健康发展离不开科学的档案安全监管,建设项目档案是档案安全监管的重要领域。本文针对我国建设项目档案安全监管中的信息不对称现象,构建项目档案安全监管主体与客体之间的演化博弈模型,并分析博弈参与方策略的动态过程,以及... 详细信息

档案事业的健康发展离不开科学的档案安全监管,建设项目档案是档案安全监管的重要领域。本文针对我国建设项目档案安全监管中的信息不对称现象,构建项目档案安全监管主体与客体之间的演化博弈模型,并分析博弈参与方策略的动态过程,以及档案主管部门与建设单位策略上的稳定性差异,分析不同情境下的博弈稳定策略。据此,针对四个博弈平衡状态点提出建设项目档案安全监管策略的完善建议,促进我国档案安全监管工作的可持续发展,探索具有中国特色的档案安全监管路径。

关键词：建设项目档案安全监管信息不对称演化博弈

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Single-event-transient effects in silicon-on-insulator ferroelectric double-gate vertical tunneling field effect transistors

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Science China(Information Sciences) 2020年第12期63卷 278-280页

作者： Guoliang tian Jinshun BI Gaobo XU Kai XI xueqin YANG Majumdar SANDIP Huaxiang YIN Qiuxia XU Wenwu WANG Institute of Microelectronics Chinese Academy of Sciences School of Microelectronics University of Chinese Academy of Sciences Department of Physics ICFAI School of Science ICFAI University Tripura

Dear editor,Ferroelectric tunneling FETs (FeTFETs) are the increasingly significant research topics on novel low-power electronic devices [1, 2], because ferroelectric materials’ negative capacitance effect is helpfu... 详细信息

关键词： SOI double-gate FeTFET single-event-transient heavy ion numerical simulation vertical tunneling

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