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Bi-level Optimal Operation Model of Mobile Energy Storage System in Coupled Transportation-power Networks

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Journal of Modern Power Systems and Clean Energy 2022年第6期10卷 1725-1737页

作者： weiqing sun Wei Liu Jie Zhang Kunpeng Tian School of Mechanical Engineering University of Shanghai for Science and TechnologyShanghai 200093China School of Optical-Electrical and Computer Engineering University of Shanghai for Science and TechnologyShanghai 200093China

The operation characteristics of energy storage can help the distribution network absorb more renewable energy while improving the safety and economy of the power system.Mobile energy storage systems(MESSs)have a broad application market compared with stationary energy storage systems and electric vehicles due to their flexible mobility and good dispatch ability.However,when urban traffic flows rise,the congested traffic environment will prolong the transit time of MESS,which will ultimately affect the operation state of the power networks and the economic benefits of MESS.This paper proposes a bi-level optimization model for the economic operation of MESS in coupled transportation-power networks,considering road congestion and the operation constraints of the power networks.The upper-level model depicts the daily operation scheme of MESS devised by the distribution network operator(DNO)in order to maximize the total revenue of the system.With fuzzy time windows and fuzzy road congestion indexes,the lower-level model optimizes the route for the transit problem of MESS.Therefore,road congestion that affects the transit time of MESS can be fully incorporated in the optimal operation scheme.Both the IEEE 33-bus distribution network and the 29-node transportation network are used to verify and examine the effectiveness of the proposed model.The simulation results demonstrate that the operation scheme of MESS will avoid the congestion period when considering road congestion.Besides,the transit energy consumption and the impact of the traffic environment on the economic benefits of MESS can be reduced.

关键词： Mobile energy storage system economic dispatch bi-level optimization model road congestion fuzzy constraint

Coordinated RES and ESS Planning Framework Considering Financial Incentives Within Centralized Electricity Market

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CSEE Journal of Power and Energy Systems 2023年第2期9卷 539-547页

作者： Kunpeng Tian weiqing sun Wei Liu He Song Department of Control Science and Engineering University of Shanghai for Science and TechnologyShanghai 200093China Department of Electrical Engineering University of Shanghai for Science and TechnologyShanghai 200093China

Coordinated investment and operations within renewable portfolio standards is one of the key technologies to meet the renewable energy target and realize the economic operations of the power system.This paper proposes a unified framework of coordinated planning and financial incentives.Joint investment in renewable energy and energy storage and joint optimization of energy and ancillary services are integrated into a unified framework.Various factors are taken into consideration by the social planner in the centralized electricity market,such as the sitting and sizing of renewable energy and energy storage,charge and discharge efficiency of the energy storage,transmission network constraints,reserve capacity,and financial incentives.This framework provides a tool for the social planner to determine the optimal planning scheme of renewable energy and energy storage.The conclusion derived is that the sum of market revenue and financial subsidies of renewable energy and energy storage is exactly equal to their investment cost which is obtained by the Karush-Kuhn-Tucker(KKT)condition of maximizing social welfare problems.A numerical result based on the modified IEEE-39 bus test system demonstrates the effectiveness of the unified framework.The impact of financial incentives,reserve capacity,and production costs on capital investment are studied.

关键词： Coordinated planning centralized electricity market financial incentives Karush-Kuhn-Tucker maximize social welfare

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

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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 VES.In 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,respectively.Besides,truncated normal distribution is used to simulate the response accuracy of VES,and the response model of NSES is constructed at the same time.Then,the hierarchical market access index(HMAI)is introduced to quantify the risk of LA being eliminated in the market competition.Finally,combined with the priority response strategy of VES and HMAI,the capacity allocation model of NSES is established.As the capacity model is nonlinear,Monte Carlo simulation and adaptive particle swarm optimization algorithm are used to solve it.In order to verify the effectiveness of the model,the data from PJM market in the United States is used for testing.Simulation 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 maximum.Through 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

Metal-Free Visible-Light-Induced Atom-Transfer Radical Addition Reaction of Alkenes/Alkynes with ICH_(2)CN

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Chinese Journal of Chemistry 2022年第17期40卷 2040-2046页

作者： Chunxiang Pan Yunyan Meng Yao Deng Bingjie Zhou Jingchao Chen Zhenxiu He weiqing sun Ruhima Khan Baomin Fan Key Laboratory of Chemistry in Ethnic Medicinal Resources Yunnan Minzu UniversityYuehua StreetKunmingYunnan650500 China Key Laboratory of Advanced Synthetic Chemistry Yunnan Minzu UniversityYuehua StreetKunmingYunnan650500 China

New blue-light promoted methods for the addition of iodoacetonitrile(ICH_(2)CN)to alkene/alkynes have been developed.The reaction led to the formation of cyanoalkylated products when conjugated alkene/styrene was used.In the case of alkynes and non-conjugated alkenes,iodoalkylation takes place furnishing the corresponding alkenyl iodides and alkyl iodides,respectively.Notably,trans-alkenyl iodides were obtained as the major product.A plausible reaction mechanism is also proposed.

关键词： Blue LED Photochemistry Alkenes Alkynes Cyanoalkylation Carboiodination

基于AHP和TOPSIS-模糊综合评价的多场景储能选型方法

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储能科学与技术 2024年第2期13卷 691-701页

作者：刘洋恺孙伟卿刘唯上海理工大学电气工程系上海200093 雅砻江流域水电开发有限公司四川成都610051

目前储能技术路线多样,不同类型的储能各具应用前景,但储能选型需要综合考虑经济性、安全性等因素,是一个复杂的多目标决策问题,因此储能选型是工程应用中的关键问题之一。提出一种将层次分析法(analytic hierarchy process,AHP)和优劣... 详细信息

目前储能技术路线多样,不同类型的储能各具应用前景,但储能选型需要综合考虑经济性、安全性等因素,是一个复杂的多目标决策问题,因此储能选型是工程应用中的关键问题之一。提出一种将层次分析法(analytic hierarchy process,AHP)和优劣解距离法(technique for order preference by similarity to ideal solution,TOPSIS)-模糊综合分析法相结合的储能选型评价体系。首先,通过建立评价体系的判断矩阵,利用AHP获取指标权重;其次,将判断矩阵里量纲不同的指标类型用TOPSIS做规范化处理,以此获得更客观的权重向量,改善AHP法的主观性;而后,将指标权重对角化处理并与标准化后的矩阵相乘获得加权判断矩阵,并求取贴近度向量。最后,加权判断矩阵与模糊综合分析法关系矩阵相乘获取储能类型的隶属度评价结果,并以隶属度最大值所在的等级为最终评价,处于等级Ⅰ中最佳,等级Ⅱ次之并以此类推;由此通过TOPSIS获得更客观的权重向量,改善AHP法的主观性,得到的权重向量也更客观。最后以锂离子电池、钠硫电池和铅酸电池等七种储能类型在应用于削峰填谷、电网保供电和改善电压质量场景为例,并与现有的储能选型方法进行比较,体现该评价体系的创新,检验所提评价体系和选型方法的有效性。

关键词：储能系统层次分析法优劣解距离法模糊综合评价法

聚氨酯型固-固相变储能材料对沥青调温效果的影响研究

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储能科学与技术 2024年第3期13卷 841-843页

作者：张雪丽孙伟清郑君华杭州科技职业技术学院城市建设学院浙江杭州311402

聚氨酯型固-固相变储能材料可以有效提高沥青的相变储能能力,从而在调节路面温度的同时,减小温度波动。基于上述背景,针对聚氨酯型固-固相变储能材料对沥青调温效果的影响展开研究。确定相变材料的分类标准,并分别研究其储能原理及具体... 详细信息

聚氨酯型固-固相变储能材料可以有效提高沥青的相变储能能力,从而在调节路面温度的同时,减小温度波动。基于上述背景,针对聚氨酯型固-固相变储能材料对沥青调温效果的影响展开研究。确定相变材料的分类标准,并分别研究其储能原理及具体应用情况,完成对聚氨酯型固-固相变储能材料特性的分析。在此基础上,定义周期性储热边界条件,根据沥青调温过程中内聚能密度的变化形式,推导相变储能材料的能量变化规律,从而确定聚氨酯型固-固相变储能材料对沥青调温效果的影响能力。

关键词：聚氨酯固-固相变储能材料沥青调温效果储热边界条件内聚能密度能量变化

Comparing Competition Equilibrium with Nash Equilibrium in Electric Power Market

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CSEE Journal of Power and Energy Systems 2018年第3期4卷 299-304页

作者： Haibing Wang Jian Deng Chengmin Wang weiqing sun Ning Xie Department of Electrical Engineering Shanghai Jiaotong UniversityShanghai 200240China Department of Business Administration Jilin University of Finance&EconomicsChangchun 130117China Department of Electrical Engineering University of Shanghai for Science&TechnologyShanghai 200093China

The Nash equilibrium and competition equilibrium have been widely studied in the electric power market up to now.In this paper,it is explained that the Nash equilibrium can be achieved by using marginal cost pricing and the com-petition equilibrium can be performed by using accounting cost pricing based on the model of the power market system.The comparison between the Nash equilibrium and competition equilibrium indicates that surplus and unfair allocation of market benefits may be obtained by the Nash equilibrium,and the competition equilibrium realizes the optimization in economics with maximum market efficiency and fairness for market benefit allocations while the optimization in mathematics is achieved by the Nash equilibrium.There is sameness between the Nash equilibrium and competition equilibrium at the point when the power network characteristics are disregarded.The case study is made on a IEEE 30-bus system,and the calculation results indicate that it is the key issue to perform the competition equilibrium by using accounting cost pricing.

关键词： Accounting cost pricing competition equilibrium marginal cost pricing market failure market surplus Nash equilibrium power market

双平面镜双相机数字图像相关技术在三维重建中的应用

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光学学报 2024年第8期44卷 84-93页

作者：李桂华王紫威孙卫庆葛朋祥王浩宇张梅安徽大学电气工程与自动化学院安徽合肥230601 安徽建筑大学机械与电气工程学院安徽合肥230601

三维数字图像相关技术在获取工件表面信息方面有重要应用,针对单相机系统在全场测量中的局限性及多相机系统在全场测量中的复杂性,本文提出一种双平面镜辅助的双相机视觉测量方法,并应用在三维重建中。即:分析像素点到三维点的实际映射... 详细信息

三维数字图像相关技术在获取工件表面信息方面有重要应用,针对单相机系统在全场测量中的局限性及多相机系统在全场测量中的复杂性,本文提出一种双平面镜辅助的双相机视觉测量方法,并应用在三维重建中。即:分析像素点到三维点的实际映射关系,基于公垂线中点法进行目标点三维重构,确定棋盘格标定板角点的三维坐标;分析角点在镜面的虚实对应关系,标定镜面位置方程,得到反射变换矩阵;通过反射变换矩阵完成物面的虚实转换,最终实现三维全场测量。为验证该方法的可行性和可靠性,分别进行了静态实验和动态实验。结果表明:在游戏币静态实验中,其正反轮廓的三维重建效果良好;在五棱铝柱热变形动态实验中,铝柱外侧表面高度变化均值与Ansys软件的仿真结果基本一致,且优于在镜面上喷涂散斑的重建方法,具有较高的精度。

关键词：测量双相机数字图像相关全场测量热变形

Therapeutic effect of electroacupuncture,massage,and blocking therapy on external humeral epicondylitis

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Journal of Traditional Chinese Medicine 2014年第3期34卷 261-266页

作者： Xinjian Li Kun Zhou Enming Zhang Zhen xiQi weiqing sun Liangfu Xu Jianfeng Xu Youzhi Cai Ronghui Wang Orthopedic Institute Fujian University of Traditional Chinese Medicine Department of Orthopedics and Traumatology Beijing Sport University Hospital Orthopedic Institute Fujian University of Traditional Chinese Medicine Department of Internal Medicine Zhaoxian People's Hospital Department of Administration Sports Bureau of Fujian Province

OBJECTIVE:To compare two therapeutic methods:electroacupuncture + massage + blocking therapy,and blocking therapy alone in the treatment of external humeral epicondylitis.METHODS:Eighty-six patients were randomized into two groups with 43 in each. The treatment group received electroacupuncture + massage +blocking therapy, while the control group received blocking therapy only. A course of electroacupuncture treatment included therapy once a day for 10days. There were 10 treatments in a massage course and massage was given once a day, with a1-week interval given before the next course. A course of blocking treatment included therapy once a week, for twototaltreatments,andgenerallyno more than three times. The therapeutic effects were evaluated with the visual analog scale(VAS),grip strength index(GSI) score, and Mayo elbow performance score(MEPS) before treatment and at0, 6, 12, and 24 months after treatment to observe thetotaleffectiverate.RESULTS: In the treatment and control groups before treatment and at 0, 6, 12, and 24 months after treatment, the VAS scores were: 6.5±1.9 and 6.4±1.6; 4.6±1.3 and 4.6±1.7; 4.8±1.3 and 4.8±1.2; 4.6±1.2 and 6.6±1.6; and 6.5±1.6 and 6.5±1.3, respectively. The GSI scores were 63±8 and 63±8; 84±6and82±7;82±7and82±6;84±6and62±8;and64±6 and 64±7, respectively.The MEPS of both groups were65±7and66±8;85±6and84±7;84±5and84±7;80±7and66±6;and65±6and65±7,respectively.The total effective rates of the treatment and control groups at 0, 6, 12, and 24 months after treatment were 87.5% and 85.0%; 85.0% and 82.5%;80.0% and 12.5%; and 2.5% and 5.0%, respectively.Compared with the treatment group, the control group had greater joint function, better the rapeutic effect, and lower pain intensity(P0.05)betweenthetwogroups.CONCLUSION: We found that both methods were effective for external humeral epicondylitis. After 6months of treatment,t

关键词：治疗效果封闭疗法肱骨电针对照组 VAS GSI 复发率