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Day-ahead optimal charging/discharging scheduling for electric vehicles in microgrids

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Protection and Control of Modern Power Systems 2018年第1期3卷 93-107页

作者： Hui Cai Qiyu Chen Zhijian Guan junhui huang State Grid(Suzhou)City and Energy Research Institute SuzhouChina State Grid Jiangsu Economic Research Institute NanjingChina China Electric Power Research Institute BeijingChina

Microgrid as an important part of smart grid comprises distributed generators(DGs),adjustable loads,energy storage systems(ESSs)and control *** can be operated either connected with the external system or islanded with the support of *** the daily output of DGs strongly depends on the temporal distribution of natural resources such as wind and solar,unregulated electric vehicle(EV)charging demand will deteriorate the unbalance between the daily load curve and generation *** this paper,a statistic model is presented to describe daily EV charging/discharging behaviors considering the randomness of the initial state of charge(SOC)of EV *** optimization problem is proposed to obtain the economic operation for the microgrid based on this *** dayahead scheduling,with the estimated power generation and load demand,the optimal charging/discharging scheduling of EVs during 24 h is achieved by serial quadratic *** the optimal charging/discharging scheduling of EVs,the daily load curve can better track the generation *** network loss in grid-connected operation mode and required ESS capacity in islanded operation mode are both decreased.

关键词： Microgrid Day-ahead schedule Charging/discharging strategy Electric vehicle(EV) Serial quadratic programming(SQP)

Distributed Estimation of Oscillations in Power Systems: An Extended Kalman Filtering Approach

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CSEE Journal of Power and Energy Systems 2019年第2期5卷 181-189页

作者： Zhe Yu Di Shi Zhiwei Wang Qibing Zhang junhui huang Sen Pan GEIRI North America San JoseCA 95134USA. State Grid Jiangsu Electric Power Company Nanjing 210024China Global Energy Interconnection Research Institute Nanjing 210024China

Online estimation of electromechanical oscillation parameters provides essential information to prevent system instability and blackout and helps to identify event categories and *** formulate the problem as a state space model and employ the extended Kalman filter to estimate oscillation frequencies and damping factors directly based on data from phasor measurement *** to considerations of communication burdens and privacy concerns,a fully distributed algorithm is proposed using diffusion extended Kalman *** effectiveness of proposed algorithms is confirmed by both simulated and real data collected during events in State Grid Jiangsu Electric Power Company.

关键词： Distributed estimation extended Kalman filter oscillation detection and estimation

Techno-economic Analysis of Contingency Reserve Allocation Scheme for Combined UHV DC and AC Receiving-End Power System

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CSEE Journal of Power and Energy Systems 2016年第2期2卷 62-70页

作者： Di Wu Ning Zhang Chongqing Kang Yi Ge Zhenjian Xie junhui huang State Key Laboratory of Power Systems Department of Electrical EngineeringTsinghua UniversityBeijing 100084China Economic Research Institute of Jiangsu Electric Power Company Nanjing 210008China

In a UHV DC and AC combined system the UHVDC’s blocking fault becomes the most serious load balance contingency of the receiving end power system due to its large *** amount of contingency reserve thus is largely *** paper proposes three distinct schemes for allocating contingency reserve to cover the power shortage caused by UHVDC’s blocking fault,and compares the economic cost of these *** operation simulation method using a unit commitment technique is proposed for evaluating the operation costs associated with increasing contingency reserve.A real case study for a Jiangsu Province power system in China is presented to demonstrate that the best scheme is to share the contingency reserve with neighborhood power systems through the transmission capacity of UHVAC lines.

关键词： Contingency reserve operation cost operation simulation UHV DC and AC combined system UHVDC blocking fault

Exciton emission dynamics in single InAs/GaAs quantum dots due to the existence of plasmon-field-induced metastable states in the wetting layer

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Chinese Physics B 2021年第9期30卷 552-557页

作者： junhui huang Hao Chen Zhiyao Zhuo Jian Wang Shulun Li Kun Ding Haiqiao Ni Zhichuan Niu Desheng Jiang Xiuming Dou Baoquan Sun State Key Laboratory of Superlattices and Microstructures Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China College of Materials Science and Optoelectronic Technology University of Chinese Academy of SciencesBeijing 100049China Beijing Academy of Quantum Information Sciences Beijing 100193China

A very long lifetime exciton emission with non-single exponential decay characteristics has been reported for single InA-s/GaAs quantum dot(QD)samples,in which there exists a long-lived metastable state in the wetting layer(WL)through radiative field coupling between the exciton emissions in the WL and the dipole field of metal *** this article we have proposed a new three-level model to simulate the exciton emission decay *** this model,assuming that the excitons in a metastable state will diffuse and be trapped by QDs,and then emit fluorescence in QDs,a stretchedlike exponential decay formula is derived as I(t)=At^(β−1)e^(−(rt)^(β)),which can describe well the long lifetime decay curve with an analytical expression of average lifetime(τ)=1/rГ(1/β+1),where G is the Gamma ***,based on the proposed three-level model,an expression of the second-order auto-correlation function g^(2)(t)which can fit the measured g^(2)(t)curve well,is also obtained.

关键词： quantum dots collective excitations charge carriers time resolved spectroscopy

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农村养老服务供给变迁:70年回顾与展望

中国农业大学学报（社会科学版） 2019年第5期36卷 100-110页

作者：黄俊辉东莞理工学院法律与社会工作学院

新中国成立70年来,农村养老服务供给变迁内嵌于社会转型当中,历经萌芽发育期、曲折发展期、快速推进期和深化改革期四个阶段。在家庭联产承包责任制、农村税费改革、养老服务需求扩大等事件的触发下,农村养老服务供给沿着"供给主体-对... 详细信息

新中国成立70年来,农村养老服务供给变迁内嵌于社会转型当中,历经萌芽发育期、曲折发展期、快速推进期和深化改革期四个阶段。在家庭联产承包责任制、农村税费改革、养老服务需求扩大等事件的触发下,农村养老服务供给沿着"供给主体-对象群体-服务类型-服务内容-供给机制"的逻辑主线演进。新时代农村养老服务的主要矛盾转变为广大农村老人日益增长的养老服务需求和不平衡不充分的供给之间的矛盾,具体表现为服务供给总量不足、补缺型模式的局限性、供需结构性矛盾突出、服务质量明显偏低。展望今后农村养老服务供给的改革方向,重点应集中在扩大服务供给总量、提供适度普惠型养老服务、优化服务供给结构、提升服务质量等方面。

关键词：农村老人养老服务供给变迁逻辑国家责任新时代

Effects of Post-expanding Lower Temperature Granulating Process on Growth Performance of Piglets

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Animal Husbandry and Feed Science 2018年第1期10卷 33-35页

作者： Zhu Xiaoping Wang Ruixiao huang junhui Gao Caixia Shang Xiuguo Department of Animal Science Foshan University

[Objective] The paper was to compare the effects of traditional granulating process and post-expanding lower temperature granulating process on starch gelatinization degree and in vitro protein digestibility of conversation feed, and growth performance of piglets. [Method] Sixty weaned piglets, 25 days old, were randomly divided into two groups, six replicates each group, and each replicate contained five piglets. Piglets in control group were fed with the conversation feed developed by traditional granulating process, and those in experimental group were fed with the conservation feed developed by post-expanding lower temperature granulating process. The trial lasted 28 d. [Result] Compared to traditional granulating process, post-expanding lower temperature granulating process significantly enhanced starch gelatinization degree of conservation feed by56.9%（P〈0.05）, and significantly improved in vitro protein digestibility of conservation feed by 11.48%（P〈0.05）. Compared to the control group, the feed intake of piglets in experimental group was increased by 21.63%（P〈0.05）; the average daily gain was increased by 27.61%（P〈0.05）; the diarrhea rate was lowered; and the feed gain ratio was improved by 4.51%（P〉0.05）. The results suggested that post-expanding lower temperature granulating process effectively enhanced feed digestion and absorption of piglets. [Conclusion] The paper provides a theoretical basis and practical reference for improvement of production process of conservation feed.

关键词： Expanding Granulating process Piglets Performance

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浅析我国《森林法》中民事责任制度及其完善

法学杂志 2011年第1期23卷 119-121页

作者：黄军辉北京林业大学人文学院北京100083

我国现行《森林法》对民事责任的规定存在缺陷,导致受损林权主体的合法权益得不到保障,同时也加重林业机关的法定职责。本次《森林法》修改,应当明确规定民事责任承担的方式;民事责任的优先受偿地位;引入惩罚性赔偿责任制度。

关键词：森林法民事责任惩罚性赔偿

Role of DKK4 in Tumorigenesis and Tumor Progression

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Role of DKK4 in Tumorigenesis and Tumor Progression

2018口腔病理年会暨第十二次全国口腔病理学术会议

作者： Xinjia Cai Zhigang Yao Long Li junhui huang Department of Oral Pathology Xiangya Stomatological Hospital Central South University

Tumor is the most public health problem. The Wnt signal pathway extensively participates in diverse progresses containing embryonic development, maintenance of homeostasis and tumor pathogenesis. The Wnt signal pathway consists of canonical signal pathway, noncanonical Wnt/PCP pathway and noncanonical Wnt/Ca2+ pathway. The deletion of the ligand of Wnts results in cytoplasmic β-catenin phosphorylation, stopping entry of β-catenin to nuclear in canonical Wnt signaling. Instead, binding of Wnts to frizzled(FZ/FZD) as well as LRP5/6 causes activation of Wnt signal pathways. This facilitates entry of β-catenin to nuclear. The Dickkopf proteins(DKKs) have been known as the antagonist of Wnt signal pathway. A number of research of DKK1, 2, 3 have been reported, however, the effect of DKK4 on tumor process is still mysterious. A more distinct comprehension about the effect of DKK4 on tumorigenesis and tumor process will shed light on biomedical research of DKK4 and tumor research. This review summarizes the current knowledge of DKK4 in various kinds of tumors.

关键词： Tumor Wnt signal pathway β-catenin DKK4

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论我国的物权观念

法学杂志 2009年第6期30卷 57-60页

作者：黄俊辉武汉大学法学院湖北武汉430072

物权绝对论否定了人人平等的基本法律观念,增加并激化了社会矛盾,忽视了物权追求社会公平正义的法律目的;物权限制论陷入"有诸多限制的自由的、绝对的物权"逻辑矛盾之中,忽略了物权观念历史变迁的事实。物权相对性具有维护社会公平正义... 详细信息

物权绝对论否定了人人平等的基本法律观念,增加并激化了社会矛盾,忽视了物权追求社会公平正义的法律目的;物权限制论陷入"有诸多限制的自由的、绝对的物权"逻辑矛盾之中,忽略了物权观念历史变迁的事实。物权相对性具有维护社会公平正义、提高物的利用效率、规制物权滥用的功能。物权相对性更为科学合理,也更符合社会和谐发展的要求。

关键词：物权绝对物权限制物权相对