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Energy Management of Price-maker Community Energy Storage by Stochastic Dynamic Programming

CSEE Journal of Power and Energy Systems 2024年第2期10卷 492-503页

作者： lirong Deng Xuan Zhang Tianshu Yang Hongbin Sun Yang fu Qinglai Guo Shmuel S.Oren Department of Electrical Engineering Shanghai University of Electric PowerShanghai 200000China Tsinghua-Berkeley Shenzhen Institute Tsinghua UniversityShenzhen 518055China Department of Industrial Engineering and Operations Research University of California BerkeleyBerkeleyCAUSA Risk Analytics and Optimization Chair EPFLSwitzerlandand also with Power Systems LaboratoryETH Zurich8092 ZurichSwitzerland State Key Laboratory of Power Systems Department of Electrical EngineeringTsinghua UniversityBeijing 100084China

In this paper,we propose an analytical stochastic dynamic programming(SDP)algorithm to address the optimal management problem of price-maker community energy storage.As a price-maker,energy storage smooths price differences,thus decreasing energy arbitrage value.However,this price-smoothing effect can result in significant external welfare changes by reduc-ing consumer costs and producer revenues,which is not negligible for the community with energy storage systems.As such,we formulate community storage management as an SDP that aims to maximize both energy arbitrage and community welfare.To incorporate market interaction into the SDP format,we propose a framework that derives partial but sufficient market information to approximate impact of storage operations on market prices.Then we present an analytical SDP algorithm that does not require state discretization.Apart from computational efficiency,another advantage of the analytical algorithm is to guide energy storage to charge/discharge by directly comparing its current marginal value with expected future marginal value.Case studies indicate community-owned energy storage that maximizes both arbitrage and welfare value gains more benefits than storage that maximizes only arbitrage.The proposed algorithm ensures optimality and largely reduces the computational complexity of the standard SDP.Index Terms-Analytical stochastic dynamic programming,energy management,energy storage,price-maker,social welfare.

关键词： Analytical stochastic dynamic programming energy management energy storage price-maker social welfare

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Energy and Parameter Analysis of SOFC System for Hydrogen Production from Methane Steam Reforming

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Journal of Thermal Science 2022年第6期31卷 2088-2110页

作者： DENG Meilong LIU Jinyi ZHANG Xiaosong LI Jinsong fu lirong School of Mechanics and Electronics Engineering Hainan UniversityHaikou 570228China

In this paper, an integrated system of solid oxide fuel cell(SOFC) and methane steam reforming for hydrogen production is proposed. The mathematical model of the coupled integrated system is studied by COMSOL and Aspen software, and the energy analysis of the integrated system is carried out. The system recovers and reuses the waste heat of the SOFC stack through the heat exchanger, which can realize the cascade efficient use of energy. By adjusting the different reforming temperatures, steam-to-carbon ratio and SOFC operating temperature of methane steam reforming to produce hydrogen, the parameters that have a greater impact on the system are studied. The research results show that as the steam-to-carbon ratio and reformer operating temperature increase, the net output power and efficiency of the system increase. When the fuel cell operating temperature is 800℃, the output power and efficiency of the system reach the maximum values of 899.93 W and 52.52%, respectively. Increasing the operating temperature of SOFC helps to improve the efficiency of fuel cells, but the efficiency of the integrated system of methane steam reforming hydrogen production and SOFC first increases and then decreases. This system can realize the direct coupling between the SOFC reactor subsystem and the methane steam reforming hydrogen production system under optimized conditions, which has reference significance for the actual operating conditions of the coupled system.

关键词： SOFC methane steam reformer hydrogen mathematical model system optimization

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新版“限塑令”下基于社会共治的塑料污染源头治理问题研究

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中国管理科学 2024年第1期32卷 288-298页

作者：王丹丹菅利荣付帅帅南京航空航天大学经济与管理学院江苏南京211106 东南大学经济管理学院江苏南京211189

塑料污染源头治理问题是新版“限塑令”在政策落实的过程中面临的关键问题。基于社会共治理念,考虑政府、社会公众、塑料生产企业对塑料污染源头治理的影响,建立基于政府监管、企业转型生产、公众参与监督的演化博弈模型,探讨了不同情... 详细信息

塑料污染源头治理问题是新版“限塑令”在政策落实的过程中面临的关键问题。基于社会共治理念,考虑政府、社会公众、塑料生产企业对塑料污染源头治理的影响,建立基于政府监管、企业转型生产、公众参与监督的演化博弈模型,探讨了不同情境下各参与方在塑料污染源头治理问题的演化均衡策略,并借助数值仿真分析各主体在塑料污染源头共同治理过程中的决策行为。研究结果表明,在新版“限塑令”实施后,受政府监管及社会公众监督的影响,不论从短期效果或长期效果来看,均会促使企业选择转型生产策略,有助于从源头切断塑料污染;较大的政府监管力度可有效约束企业违规生产行为,而当政府消极监管时,公众的监督举报可对企业生产行为进行有效约束;若政府提高对公众参与监督的经济激励,有助于提升公众参与塑料污染源头问题的社会共治水平。

关键词：塑料污染源头治理社会共治演化博弈

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中国共产党坚持人民至上的哲学依据、历史演进与实践进路

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商丘师范学院学报 2024年第5期40卷 47-52页

作者：傅莉容四川大学马克思主义学院四川成都610207

坚持人民至上蕴藏着深厚的哲学依据,人是实践活动与认识活动的主体是其认识论依据,人民群众是历史创造者是其历史观依据,人的全面而自由发展是其价值论依据。百余年来,中国共产党在不同历史阶段对人民话语进行理论开拓,经历了从党的群... 详细信息

坚持人民至上蕴藏着深厚的哲学依据,人是实践活动与认识活动的主体是其认识论依据,人民群众是历史创造者是其历史观依据,人的全面而自由发展是其价值论依据。百余年来,中国共产党在不同历史阶段对人民话语进行理论开拓,经历了从党的群众路线、人民当家作主、维护人民利益到坚持人民至上的话语演进。结合党坚持人民至上的历史沿革与演化规律,新时代坚持人民至上在实践中要求做到坚持人民地位至上,巩固人民当家作主的主体地位;坚持人民利益至上,强化为人民谋利益的工作导向;坚持人民标准至上,坚守人民满不满意的根本标准,推动实现人民对美好生活向往的价值追求,彰显马克思主义政党的人民性底色。

关键词：人民至上哲学依据历史演进实践进路

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基于核仁聚类估计和数据驱动分布鲁棒优化的海量异构产消者联盟能量管理策略

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电力系统保护与控制 2024年第7期52卷 98-114页

作者：张智泉陈晓杰符杨李振坤邓莉荣海上风电技术教育部工程研究中心(上海电力大学) 上海200090

随着分布式资源接入技术和可交易能源市场的快速发展,海量异构多能产消者电热能源共享和源荷强不确定性给联盟能量管理带来极大挑战。基于此,提出一种基于核仁聚类估计和数据驱动分布鲁棒优化的海量异构多能产消者联盟能量管理策略。该... 详细信息

随着分布式资源接入技术和可交易能源市场的快速发展,海量异构多能产消者电热能源共享和源荷强不确定性给联盟能量管理带来极大挑战。基于此,提出一种基于核仁聚类估计和数据驱动分布鲁棒优化的海量异构多能产消者联盟能量管理策略。该方法以联盟及个体在多重不确定性影响下的社会福利最大为目标,建立了考虑电热网络动态差异性的海量产消者能量管理模型,以解决联盟能量管理可扩展性、公平性和隐私性难以兼顾的问题。另外,考虑到核仁计算的复杂度和源荷不确定性的不利影响,分别提出了基于高斯混合聚类的核仁估计方法和基于数据驱动Wasserstein距离的分布鲁棒优化模型,实现了模型求解速度与精度的均衡。算例结果表明,所提方法有效提升了产消者联盟在多重不确定性影响下的社会福利,实现了联盟能量管理可扩展性、公平性和隐私性的均衡,促进了更多的产消者参与本地能源点对点(peer-to-peer,P2P)交易。

关键词：产消者联盟能量管理社会福利核仁不确定性

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Effect of Luteinizing Hormone-Releasing Hormone Analogue on the Sexual Behavior of Sacalia quadriocellata

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Asian Herpetological Research 2010年第1期1卷 40-43页

作者： HE Bin LIU Yuxiang SHI Haitao fu lirong WANG Jichao College of Life Sciences Hainan Normal University Chengdu Institute of Biology Chinese Academy of Sciences

Luteinizing hormone-releasing hormone(LHRH) is known to influence sexual behavior in many vertebrate taxa, but there have been no systematic studies on the role of LHRH in sexual behavior of turtles. We tested the hypotheses that exogenous LHRH analogues would induce sexual behavior of male Four-eyed turtle, Sacalia quadriocellata. We examined this by challenging males with intramuscular injections of mammalian luteinizing hormone-releasing hormone analogue(LHRH-A), human chorionic gonadotropin(HCG), or a combination of the two, and subsequently exposing them to sexually receptive females for behavioral observation. Our data show that the injection of only HCG could not, while that of only LHRH-A could, facilitate sexual behavior along with testicular recrudescence and spermatogenesis in S. quadriocellata. The injection of both LHRH-A and HCG would induce more drastic sexual behavior of the animals than that of LHRH-A alone, indicating HCG enhances the effects of LHRH-A induced sexual behavior. However, different pharmacological dosages of LHRH-A(0.5 μg, 1 μg, 2 μg per 100 g bodyweight) did not correspond to different activity levels. Though the mechanism of LHRH effect was not determined, this study may support that the sexual behavior of S. quadriocellata which occurs at the beginning of the injection despite regression of the gonads. This is the first report on the exogenous LHRH-A induced sexual behavior for this species.

关键词： Four-eyed turtle,Sacalia quadriocellata,luteinizing hormone-releasing hormone,sexual behavior

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干旱胁迫对连翘幼苗非结构性碳分配和水力特性的影响

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生态学报 2024年第11期44卷 4698-4707页

作者：王云霞刘莹付雨辰李欣诺刘青马辉珍何俐蓉王国梁西北农林科技大学水土保持科学与工程学院杨陵712100 中国科学院水利部水土保持研究所杨陵712100 西北农林科技大学资源环境学院杨陵712100 西北农林科技大学生命科学学院杨陵712100

为了探究长期干旱胁迫下连翘不同器官的非结构性碳水化合物(NSC)含量与水力特性的协调及响应机制。以连续3年不同水分条件处理后的连翘幼苗为研究对象,设置3个水分处理(适宜供水、中度干旱胁迫和重度干旱胁迫),研究长期干旱胁迫后连翘... 详细信息

为了探究长期干旱胁迫下连翘不同器官的非结构性碳水化合物(NSC)含量与水力特性的协调及响应机制。以连续3年不同水分条件处理后的连翘幼苗为研究对象,设置3个水分处理(适宜供水、中度干旱胁迫和重度干旱胁迫),研究长期干旱胁迫后连翘幼苗的光合特性、生物量的分配、NSC各组分含量、水力特性的变化及其碳水两者之间的相关关系。结果表明:(1)适宜供水、中度干旱、重度干旱胁迫下,枝条的栓塞程度分别为30.7%、41.8%和42.3%,枝条导水率分别为0.95、0.71、0.65 kg m^(-1)s-1MPa^(-1)。(2)重度干旱胁迫显著降低了净光合速率、蒸腾速率、气孔导度、水分利用效率。(3)重度干旱胁迫导致地上和粗根生物量显著降低,细根生物量和根冠比显著增加。此外,各器官的NSC含量显著降低,其根系NSC消耗量最高,根系的可溶性总糖和淀粉含量显著降低,枝条的可溶性总糖、葡萄糖和蔗糖含量增加了12.9%、31.1%和45.7%,而淀粉含量降低了40.7%。(4)枝条栓塞程度和导水率与可溶性总糖、淀粉、蔗糖和葡萄糖含量显著相关,其栓塞程度与可溶性总糖、葡萄糖和蔗糖呈正相关,而与淀粉呈负相关(P<0.01)。综上所述,干旱导致连翘枝条木质部的栓塞程度增加,导水率、光合作用和水分运输效率均显著降低,但连翘通过提高枝条内可溶性总糖、葡萄糖、蔗糖含量和降低淀粉、NSC含量以提高植物在干旱条件下的存活机率及旱后水分恢复能力,研究为半干旱区连翘培育和经营提供理论依据。

关键词：干旱渗透调节非结构碳水化合物水力特性

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Captive Breeding of the Four-eyed Turtle(Sacalia quadriocellata)

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Asian Herpetological Research 2010年第2期1卷 111-117页

作者： HE Bin LIU Yuxiang SHI Haitao ZHANG Jie HU Maogui MA Yonggang fu lirong HONG Meiling WANG Jichao Fong J.Jonathan Parham F.James College of Life Sciences Hainan Normal University Chengdu Institute of Biology Chinese Academy of Sciences Museum of Vertebrate Zoology Department of Integrative BiologyUniversity of California at Berkeley Alabama Museum of Natural History University of Alabama

In 1998,a study on forty-five four-eyed turtles(Sacalia quadriocellata) was initiated to gather preliminary biological data of this species and to investigate the feasibility of its captive reproduction.In the following six years,no courtship behavior was found occurring in males and no oviposition in females.From 2004 to 2007,two successful techniques were applied to initiate reproductive behavior:1) injecting exogenous reproductive hormones; and 2) reducing the stress of living in captivity.As a result of the hormone treatments,courtship behavior and copulation were observed during September and October,2005.However,no courtship displays were seen from the CK males,which were not treated with hormones.Ovulation occurred between December and March,and the correlation was not significant between behavior of ovulation and food intake.Females laid only one clutch of eggs each year,with 2.47 eggs(n=34,range=1–4) at average,and 84 eggs were totally obtained,of which 13 were damaged,52 were infertile and 19 fertile.Of the fertile eggs,nine were hatched with mean incubation period of 105.9 days(n=9,range=89–122 days) at temperature ranging from 24 to 27℃.

关键词： four-eyed turtle Sacalia quadriocellata captive breeding hormone stress conservation

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Record-Breaking Frequency of 44 GHz Based on the Higher Order Mode of Surface Acoustic Waves with LiNbO_(3)/SiO_(2)/SiC Heterostructures

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Engineering 2023年第1期20卷 112-119页

作者： Jian Zhou Dinghong Zhang Yanghui Liu Fengling Zhuo lirong Qian Honglang Li Yong-Qing fu Huigao Duan College of Mechanical and Vehicle Engineering Hunan UniversityChangsha 410082China Tianjin Key Laboratory of Film Electronic and Communication Devices School of Integrated Circuit Science and EngineeringTianjin University of TechnologyTianjin 30084China CAS Center for Excellence in Nanoscience National Center for Nanoscience and TechnologyBeijing 100190China Faculty of Engineering and Environment Northumbria UniversityNewcastle upon Tyne NE18STUK

Surface acoustic wave (SAW) technology has been extensively explored for wireless communication, sensors, microfluidics, photonics, and quantum information processing. However, due to fabrication issues, the frequencies of SAW devices are typically limited to within a few gigahertz, which severely restricts their applications in 5G communication, precision sensing, photonics, and quantum control. To solve this critical problem, we propose a hybrid strategy that integrates a nanomanufacturing process (i.e., nanolithography) with a LiNbO_(3)/SiO_(2)/SiC heterostructure and successfully achieve a record-breaking frequency of about 44 GHz for SAW devices, in addition to large electromechanical coupling coefficients of up to 15.7%. We perform a theoretical analysis and identify the guided higher order wave modes generated on these slow-on-fast SAW platforms. To demonstrate the superior sensing performance of the proposed ultra-high-frequency SAW platforms, we perform micro-mass sensing and obtain an extremely high sensitivity of approximately 33151.9 MHz·mm2·μg−1, which is about 1011 times higher than that of a conventional quartz crystal microbalance (QCM) and about 4000 times higher than that of a conventional SAW device with a frequency of 978 MHz.

关键词： Ultra-high frequency SAW Higher order mode Hyper sensitive detection

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Engineering single atomic ruthenium on defective nickel vanadium layered double hydroxide for highly efficient hydrogen evolution

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Nano Research 2023年第4期16卷 4612-4619页

作者： Xiaoyu Chen Jiawei Wan Meng Zheng Jin Wang Qinghua Zhang Lin Gu lirong Zheng Xianzhu fu Ranbo Yu College of Materials Science and Engineering Shenzhen UniversityShenzhen 518071China College of Physics and Optoelectronic Engineering Shenzhen UniversityShenzhen 518060China Department of Physical Chemistry School of Metallurgical and Ecological EngineeringUniversity of Science and Technology Beijing InstitutionBeijing 100083China State Key Laboratory of Biochemical Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China Beijing National Center for Electron Microscopy and Laboratory of Advanced Materials Department of Materials Science and EngineeringTsinghua UniversityBeijing 100084China Beijing Synchrotron Radiation Facility Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China Key Laboratory of Advanced Material Processing&Mold Ministry of EducationZhengzhou UniversityZhengzhou 450002China

Fabricating single-atom catalysts(SACs)with high catalytic activity as well as great stability is a big challenge.Herein,we propose a precise synthesis strategy to stabilize single atomic ruthenium through regulating vanadium defects of nickel vanadium layered double hydroxides(NiV-LDH)ultrathin nanoribbons support.Correspondingly,the isolated atomically Ru doped NiV-LDH ultrathin nanoribbons(NiVRu-R)were successfully fabricated with a super-high Ru load of 12.8 wt.%.X-ray absorption spectrum(XAS)characterization further confirmed atomic dispersion of Ru.As catalysts for electrocatalytic hydrogen evolution reaction(HER)in alkaline media,the NiVRu-R demonstrated superior catalytic properties to the commercial Pt/C.Moreover,it maintained exceptional stability even after 5,000 cyclic voltammetry cycles.In-situ XAS and density functional theory(DFT)calculations prove that the Ru atomic sites are stabilized on supports through forming the Ru-O-V structure,which also help promote the catalytic properties through reducing the energy barrier on atomic Ru catalytic sites.

关键词： hydrogen evolution reaction layered double hydroxide ruthenium atomic site ultrathin nanoribbons

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