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CSEE Journal of Power and Energy Systems 2023年第3期9卷 1139-1150页

作者： Ning Yan Xiangjun Li Shaohua Ma Haichuan Zhao Bo Zhang College of Electrical Engineering Shenyang University of TechnologyShenyang 110870China China Electric Power Research Institute Beijing 100192China

Retired power battery construction energy storage systems(ESSs)for echelon utilization can not only extend the remaining capacity value of the battery,and decrease environmental pollution,but also reduce the initial cost of energy storage systems.In this paper,an ESS constructed of retired power batteries for echelon utilization in microgrids(MGs)is considered.Firstly,considering the influence of different discharge depths on the battery life cycle,the correlation equation between the state of charge(SOC)and the state of health(SOH)is established.Secondly,the accelerated life test method,based on the inverse power law coefficient equation,is proposed,and it is used to evaluate the reliability of the ESS.Finally,according to the SOC characteristics,the dynamic security margin of the ESS is established.The life cycle cost,supply-demand balance and ESS balanced control are comprehensively considered,and the location and capacity of energy storage in MGs are determined.It is simulated using the IEEE-RTS 24 node system;the results show that the investment cost of the ESS is reduced and the operational life is prolonged.

关键词： ESS echelon utilization accelerated life test balanced control capacity configuration

Survival outcomes of different treatment modalities in patients with low-grade endometrial stromal sarcoma

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Chinese Medical Journal 2019年第9期132卷 1128-1132页

作者： Ming Wang Shi-Hui Meng Bo Li Yue He Yu-Mei Wu Department of Gynecologic Oncology Beijing Obstetrics and Gynecology HospitalCapital Medical UniversityBeijing 100006China Department of Obstetrics and Gynecology Beijing Tiantan HospitalCapital Medical UniversityBeijing 100070China Community Health Service Center of Xicheng District Beijing 100053China Department of Obstetrics and Gynecology Beijing Youan HospitalCapital Medical UniversityBeijing 100069China

To the Editor:Endometrial stromal sarcoma (ESS) is a histologic subtype that accounts for approximately 38% of uterine sarcomas.[1]Early and complete surgical resection of ESS is the initial treatment.

关键词： Editor ESS treatment

A Temporary Frequency Response Strategy Using a Voltage Source-Based PermanentMagnet Synchronous Generator and Energy Storage Systems

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Energy Engineering 2024年第2期121卷 541-555页

作者： Baogang Chen Fenglin Miao Jing Yang Chen Qi Wenyan Ji CSIC HaiZhuangWindpower Co. Ltd.Chongqing400000China State Key Laboratory of Operation and Control of Renewable Energy&Storage Systems China Electric Power Research InstituteBeijing100000China

Energy storage systems(ESS)and permanent magnet synchronous generators(PMSG)are speculated to be able to exhibit frequency regulation capabilities by adding differential and proportional control loops with different control objectives.The available PMSG kinetic energy and charging/discharging capacities of the ESS were restricted.To improve the inertia response and frequency control capability,we propose a short-term frequency support strategy for the ESS and PMSG.To this end,the weights were embedded in the control loops to adjust the participation of the differential and proportional controls based on the system frequency excursion.The effectivenESS of the proposed control strategy was verified using PSCAD/EMTDC.The simulations revealed that the proposed strategy could improve the maximum rate of change of the frequency nadir and maximum frequency excursion.Therefore,it provides a promising solution of ancillary services for frequency regulation of PMSG and ESS.

关键词： Inertial control PMSG ESS wind power generation frequency support

基于ESS的城市自然健康效益研究:服务功效、级联逻辑与评估框架

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中国园林 2022年第7期38卷 97-102页

作者：杨春谭少华陈璐瑶胡瑶瑶重庆大学建筑城规学院重庆400044 重庆大学山地城镇建设与新技术教育部重点实验室

城市自然有益人体健康,并成为风景园林领域参与公共健康事务的一种有效干预途径。系统梳理MA《千禧年生态系统服务评价》和IPBES《生物多样性与生态系统服务全球评估报告》中有关城市自然、生态系统服务与健康的理论联系,并区分与归纳... 详细信息

城市自然有益人体健康,并成为风景园林领域参与公共健康事务的一种有效干预途径。系统梳理MA《千禧年生态系统服务评价》和IPBES《生物多样性与生态系统服务全球评估报告》中有关城市自然、生态系统服务与健康的理论联系,并区分与归纳城市自然对人体健康的潜在服务功能和实际服务功能,从生态系统服务视角提出自然-健康效益实现的“自然属性-自然潜能-自然暴露-自然使用-健康效益”级联转化逻辑与关联过程。最后提出自然健康效益研究的集成评估框架、评估环节与模型方法,以期为自然健康效益研究提供系统性分析理论逻辑框架。

关键词：风景园林城市自然 ESS 健康效益评估框架

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三群体2×2×2非对称演化博弈稳定性分析

运筹与管理 2022年第1期31卷 38-45页

作者：马本江蒋学海中南大学商学院湖南长沙410083 北部湾海洋发展研究中心(北部湾大学) 广西钦州535011

针对目前三方演化博弈的稳定性研究不足这一问题,利用复制动态方程构建了一般化的三维动力系统,首先讨论了单群体策略演化趋势,接着根据李雅普诺夫稳定性理论分析了系统的渐进稳定性,并结合单群体策略的演化趋势对系统稳定性作了深入研... 详细信息

针对目前三方演化博弈的稳定性研究不足这一问题,利用复制动态方程构建了一般化的三维动力系统,首先讨论了单群体策略演化趋势,接着根据李雅普诺夫稳定性理论分析了系统的渐进稳定性,并结合单群体策略的演化趋势对系统稳定性作了深入研究。研究表明:严格纯策略纳什均衡是ESS,不严格纯策略纳什均衡是线性策略收敛(自定义概念),所有类型的混合策略纳什均衡均为鞍点,共同划分了ESS的吸引域,并证明了零特征值非ESS定理,以及ESS不共边定理,在此基础上给出了N维双策略系统中ESS的最多个数。最后,设计了六组经典算例,首先结合研究结果分析了算例,接着对算例进行系统仿真,仿真结果与理论分析一致,为演化博弈的进一步研究提供借鉴与启发。

关键词：三方博弈演化博弈稳定性 ESS 线性策略收敛

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储能系统抑制电网功率振荡的机理研究

电工技术学报 2019年第20期34卷 4373-4380页

作者：熊连松修连成王慧敏许昭南京工程学院自动化学院南京211167 香港理工大学电机工程系香港999077 四川农业大学机电学院雅安625000 电子科技大学机械与电气工程学院成都610000

为了揭示储能系统(ESS)抑制电网功率振荡的机理,首先建立含有ESS的单机无穷大电网在机电时间尺度下的数学模型。随后,利用经典的电气转矩法分析影响同步机电力系统惯性效应、阻尼水平和同步能力的物理机制、关键因素及其影响规律。结果... 详细信息

为了揭示储能系统(ESS)抑制电网功率振荡的机理,首先建立含有ESS的单机无穷大电网在机电时间尺度下的数学模型。随后,利用经典的电气转矩法分析影响同步机电力系统惯性效应、阻尼水平和同步能力的物理机制、关键因素及其影响规律。结果表明:ESS控制策略采用功角控制时,ESS只需调节功角控制环的PD参数即可等效改变同步机电力系统的同步能力和阻尼水平;ESS控制策略使用转速作为外环反馈信号时,转速控制环的PID参数分别影响同步机电力系统的阻尼水平、同步能力和惯性效应。仿真结果证明ESS抑制同步机电力系统功率振荡机理分析的正确性。此外,研究结论有助于设计有效的ESS控制策略,以辅助提升电力系统的惯性水平和阻尼能力。

关键词： ESS 功率振荡惯性效应阻尼水平同步能力

基于STATCOM/ESS的光伏低压穿越控制策略

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电测与仪表 2019年第11期56卷 108-114,127页

作者：程平凡曾成碧高选杰苗虹四川大学电气信息学院

为了提高光伏并网系统的低压穿越(Low Voltage Ride Through,LVRT)能力,将储能系统(Energy Storage System,ESS)和静止同步补偿器(Static Synchronous Compensator,STATCOM)组成新型功率补偿装置STATCOM/ESS引入光伏并网发电系统。当电网侧发生电压跌落时,STATCOM/ESS不但提供的无功功率可以支撑并网点电压,同时吸收多余的有功功率避免对光伏发电系统的危害,电压恢复后将储存的能量返送回电网,高效利用能源。为便于功率双向流动,STATCOM与ESS之间采用双有源主动桥(Dual Active Bridge,DAB)直流变换器连接。针对DAB变换器,提出一种改进的双移相控制策略,来减小DAB变换器的回流功率。仿真结果表明,提出的控制策略在一定范围内将回流功率限制为零,显著提升光伏并网系统的低压穿越能力,提高光伏并网系统的稳定性,具有良好的灵活性和优越性。

关键词：光伏低压穿越 STATCOM ESS DAB直流变换器

基于ESS的城市绿地健康影响研究:服务功能、内涵及机制

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中国园林 2021年第3期37卷 32-37页

作者：杨春谭少华董明娟重庆大学建筑城规学院城乡规划系重庆400044 重庆大学建筑城规学院重庆400044 重庆大学山地城镇建设与新技术教育部重点实验室重庆400044

城市绿地不仅具有供给、调节、支持和文化生态服务功能,更对居民健康和福祉提供诸多物质和非物质服务。通过梳理城市绿地生态系统对健康影响的服务功能,提出城市绿地ESS健康影响内涵,基于服务量-暴露水平-接触体验-效益的现实理论路径... 详细信息

城市绿地不仅具有供给、调节、支持和文化生态服务功能,更对居民健康和福祉提供诸多物质和非物质服务。通过梳理城市绿地生态系统对健康影响的服务功能,提出城市绿地ESS健康影响内涵,基于服务量-暴露水平-接触体验-效益的现实理论路径提出城市绿地ESS之于健康影响的机制解析框架与分析模型,以期为推动城市绿地ESS的健康影响研究奠定理论和技术基础。

关键词：风景园林城市绿地 ESS 健康影响机制

Evolutionary Game Dynamics in a FitnESS-Dependent Wright-Fisher ProcESS with Noise

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Communications in Theoretical Physics 2011年第9期56卷 404-410页

作者：全吉王先甲 Institute of Systems Engineering Wuhan University Economics and Management School of Wuhan University

Evolutionary game dynamics in finite size populations can be described by a fitnESS-dependent WrightFisherprocESS.We consider symmetric 2x2 games in a well-mixed population.In our model,two parameters todescribe the level of player’s rationality and noise intensity in environment are introduced.In contrast with the fixationprobability method that used in a noiselESS case,the introducing of the noise intensity parameter makes the procESSan ergodic Markov procESS and based on the limit distribution of the procESS,we can analysis the evolutionary stablestrategy (ESS) of the games.We illustrate the effects of the two parameters on the ESS of games using the Prisoner’sdilemma games (PDG) and the snowdrift games (SG).We also compare the ESS of our model with that of the replicatordynamics in infinite size populations.The results are determined by simulation experiments.

关键词：噪声强度进化博弈动力学健身马尔可夫过程进化稳定策略 ESS 极限分布

Clinical effects of comprehensive therapy of early psychological intervention and rehabilitation training on neurological rehabilitation of patients with acute stroke

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Asian Pacific Journal of Tropical Medicine 2012年第11期5卷 914-916页

作者： Duo-Yu Wu Min Guo Yun-Suo Gao Yan-Hai Kang Jun-Cheng Guo Xiang-Ling Jiang Feng Chen Tao Liu People's Hospital of Hainan Province

Objective:To evaluate the clinical effects of comprehensive therapy of psychological intervention and rehabilitation training on the mental health of the patients with acute stroke. Methods:A total of 120 patients with acute stroke were randomly divided into trial group and control group.Both groups were given the corresponding drug therapy,medical basic nursing and convention nursing.Besides,psychological intervention and comprehensive rehabilitation training were added to the trial group.SCL-90,Europ stroke scales(ESS) score were assESSed with each patient on day 3 for the first time and on day 21 for the second time; Barthel index was assESSed on the day 90.Results:After psychological intervention,SCL-90 declined significantly in the trial group comparing with the control group,there were signicant differences in the somatization,obsESSion,deprESSion,anxiety,fear,ESS score,Barthel index and other psychological factors between the trial group and control group(PESS ability and activity of daily living on the patients with acute stroke.

关键词： Acute stroke Psychological intervention SCL-90 ESS