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Coordinated scheduling model of power system with active distribution networks based on multi-agent system

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Journal of Modern Power Systems and Clean Energy 2018年第3期6卷 521-531页

作者： jingzhe hu Hao CONG Chuanwen JIANG School of Electronic Information and Electrical Engineering Shanghai Jiao Tong University

With the large-scale development of distributed generations(DGs) and the connection into the main grid of active distribution networks(ADNs), traditional centralized dispatch of power system has encountered enormous challenge. In a bilateral electricity market, introducing ADN resources in the day-ahead generation schedule will not only enrich the dispatch patterns to the power system,but also reflect the initiative of ADNs. This paper proposes a coordinated scheduling model of power system with a plurality of ADNs based on multi-agent system where ADN agents are brought in the day-ahead market *** process of market clearing and the dispatch of DGs in ADNs are independent with each other but linked together through the market clearing price(MCP) and bid *** optimal operating point of the whole system is achieved through multiple information exchange. In comparison with the dispatch without interaction between ADNs and the market operator(MO), the coordinated scheduling model is applied in a system with four ADNs to verify that the proposed method can improve the overall interests of ADNs. Finally, the effects of storage device and tie-line power limit are analyzed.

关键词： Multi-agent system Active distribution network Market clearing price(MCP) Coordinated scheduling

基于PCE的系统参数化暂态稳定约束最优潮流

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电网与清洁能源 2024年第6期40卷 48-57页

作者：刘颂凯李正浩周倩杨超胡竞哲阮肇华三峡大学电气与新能源学院湖北宜昌443002 新能源微电网湖北省协同创新中心湖北宜昌443002 国网福建省电力有限公司宁德供电公司福建宁德352100

为更好地应对电力系统中存在的不确定参数给暂态稳定性带来的影响,提出了一种基于多项式混沌展开(polynomial chaos expansion,PCE)和随机伽辽金法(stochastic Galerkin method,SGM)的参数化暂态稳定约束最优潮流(parameterized transie... 详细信息

为更好地应对电力系统中存在的不确定参数给暂态稳定性带来的影响,提出了一种基于多项式混沌展开(polynomial chaos expansion,PCE)和随机伽辽金法(stochastic Galerkin method,SGM)的参数化暂态稳定约束最优潮流(parameterized transient stability constrained optimal power flow,PTSCOPF)问题的求解方案。针对电力系统不确定参数建立PTSCOPF模型;基于PCE和SGM近似拟合参数化暂态稳定轨迹,将原始的微分代数方程组(differential algebraic equations,DAE)形式的PTSCOPF模型转化为代数方程组形式的参数化非线性规划(non-linear programming,NLP)问题;采用原始-对偶内点法求解该NLP问题。利用改进的新英格兰10机39节点系统算例进行了各项测试,仿真结果表明,所提方法能够实现系统在预想故障下保持暂态稳定的优化效果。

关键词：暂态稳定约束最优潮流多项式混沌展开随机伽辽金法不确定参数

计及综合能源服务商参与的电力系统低碳经济调度

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电网技术 2020年第2期44卷 514-522页

作者：胡静哲王旭蒋传文丛昊电力传输与功率变换控制教育部重点实验室(上海交通大学) 上海市闵行区200240 上海华为技术有限公司上海市浦东新区201206 国网安徽省电力有限公司经济技术研究院安徽省合肥市230022

针对包含电力、热力、天然气负荷的综合能源服务商在电力市场与天然气市场中的可调度价值,建立了一种考虑综合能源服务商响应的电力系统低碳调度模型。首先,提出了计及能源转换装置运行成本及碳排放量的综合能源服务商优化调度策略;然... 详细信息

针对包含电力、热力、天然气负荷的综合能源服务商在电力市场与天然气市场中的可调度价值,建立了一种考虑综合能源服务商响应的电力系统低碳调度模型。首先,提出了计及能源转换装置运行成本及碳排放量的综合能源服务商优化调度策略;然后建立了电力–天然气联合市场运行机制;最后在市场环境下建立了电力、天然气、综合能源服务商的联合优化模型,并通过交替方向乘子法进行求解。算例分析表明,在电力、天然气市场中考虑综合能源服务商响应可以降低电力系统的碳排放量以及整个系统的运行成本,碳交易机制及综合需求响应是从发电侧和负荷进行碳排放管理的有效手段。

关键词：综合能源服务商碳排放管理天然气市场

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脑卒中高危人群体力活动研究进展

护理研究 2020年第19期34卷 3467-3470页

作者：胡晶喆唐红梅上海健康医学院上海201318

综述了国内外脑卒中高危人群体力活动水平现状及其影响因素,未来研究可以全面评价不同类型、强度体力活动水平,并综合纳入个人因素、社会环境因素以探讨体力活动的影响因素。

关键词：脑卒中高危人群体力活动影响因素综述

电子商务推动企业市场营销的变革趋势与应对策略

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洛阳理工学院学报（社会科学版） 2023年第2期38卷 59-61,66页

作者：胡靖哲白俄罗斯国立经济大学经济系白俄罗斯明斯克

电子商务的迅速发展,对传统市场营销产生了重要而深刻的影响。电子商务有低成本、高效率的优势,能增加客户关系黏性,显现强大的市场竞争力。电子商务虽不能完全取代传统市场营销,但对企业市场营销中的消费者群体特点、消费需求、交易模... 详细信息

电子商务的迅速发展,对传统市场营销产生了重要而深刻的影响。电子商务有低成本、高效率的优势,能增加客户关系黏性,显现强大的市场竞争力。电子商务虽不能完全取代传统市场营销,但对企业市场营销中的消费者群体特点、消费需求、交易模式、产品个性化等方面,提出了变革要求。电子商务推动下企业市场营销要进一步完善营销体系、制订价格策略、实施网络营销、打造品牌形象等,构建多元化市场营销渠道,取得市场竞争优势。

关键词：电子商务市场营销市场竞争

考虑风险调整资本收益率阈值约束的虚拟电厂优化调度策略

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中国电机工程学报 2016年第17期36卷 4617-4626页

作者：刘扬洋蒋传文谭胜敏胡静哲李庆生电力传输与功率变换控制教育部重点实验室(上海交通大学) 上海市闵行区200240 贵州电网有限责任公司电网规划研究中心贵州省贵阳市550002

随着分布式能源的广泛接入电网,将分布式电源整合管理的虚拟电厂技术得到了越来越广泛的关注。因为部分内部元素的不确定性,虚拟电厂调度策略要综合考虑收益和风险两方面,从而是一个多目标优化问题。该文引入考虑风险调整资本收益率指... 详细信息

随着分布式能源的广泛接入电网,将分布式电源整合管理的虚拟电厂技术得到了越来越广泛的关注。因为部分内部元素的不确定性,虚拟电厂调度策略要综合考虑收益和风险两方面,从而是一个多目标优化问题。该文引入考虑风险调整资本收益率指标建立了收益和风险的平衡关系,从而提出一种具有经济学含义的虚拟电厂优化调度模型;也引入经济资本概念作为虚拟电厂抵抗风险的准备金,并利用条件在险现金流指标确定经济资本的需求。通过实际示范项目作为算例,文中验证了调度模型的有效性;并且通过对比分析说明,组建虚拟电厂能够降低偏差惩罚,并提高分布式电源和负荷的购售电收益。

关键词：风险调整资本收益率虚拟电厂调度策略经济资本条件在险现金流

R-matrix for the 8-Dimensional Spin Representation of Uq(so7)

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Acta Mathematica Sinica,English Series 2024年第2期40卷 485-497页

作者： Hong Mei hu Nai Hong hu School of Mathematical Sciences Suzhou University of Science and TechnologySuzhou 215009P.R.China School of Mathematical Sciences MOE Key Laboratory of Mathematics and Engineering Applications&Shanghai Key Laboratory of PMMPEast China Normal UniversityShanghai 200241P.R.China

The purpose of the paper is to describe the solution to the quantum Yang-Baxter equation associated with the 8-dimensional spin representation Tsp of Uq(so7).The self-duality of Tsp and the symmetry of the corresponding braiding matrix are ***,the minimal polynomial of the braiding R-matrix of Tsp is presented explicitly in an ingenious method by taking advantage of nice features of the spin representation Tsp.

关键词： Braiding R-matrix spin module minimal polynomial

Mapping out the reaction network of humin formation at the initial stage of fructose dehydration in water

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Green Energy & Environment 2024年第6期9卷 1016-1026页

作者： Xing Fu Yexin hu Ping hu hui Li Shuguang Xu Liangfang Zhu Changwei hu Key Laboratory of Green Chemistry and Technology Ministry of EducationCollege of ChemistrySichuan UniversityChengduSichuan610064China State Key Laboratory of Southwestern Chinese Medicine Resources Innovative Institute of Chinese Medicine and PharmacyChengdu University of Traditional Chinese MedicineChengduSichuan611137China

The formation of humins hampers the large-scale production of 5-hydroxymethylfurfural(HMF)in ***,a detailed reaction network of humin formation at the initial stage of fructose-to-HMF dehydration in water is delineated by combined experimental,spectroscopic,and theoretical *** bimolecular reaction pathways to build up soluble humins are *** is,the intermolecular etherification of β-furanose at room temperature initiates the C12 path,whereas the C-C cleavage of a-furanose at 130-150℃ leads to C11 path,and that of open-chain fructose at 180℃ to C11' *** successive intramolecular dehydrations and condensations of the as-formed bimolecular intermediates lead to three types of soluble *** show that the C12 path could be restrained by using HCl or AlCl_(3) catalyst,and both the C12 and C110 paths could be effectively inhibited by adding THF as a co-solvent or accelerating heating rate via microwave heating.

关键词： Carbohydrates 5-hydroxymethylfurfural Reaction network Soluble humins Tautomer

Investigation of mechanical and electrical characteristics of selfsensing pneumatic torsional actuators

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Science China(Technological Sciences) 2024年第1期67卷 130-142页

作者： XIAO Wei hu DeAn hu GuoLiang XIAO Yihua Key Laboratory of Conveyance and Equipment Ministry of EducationEast China Jiaotong UniversityNanchang 330013China Key Laboratory of Advanced Design and Simulation Techniques for Special Equipment Ministry of EducationHunan UniversityChangsha 410082China

Soft pneumatic actuators are one of the most promising actuation for soft robots,and great achievements have been *** it remains challenging to endow sensing capabilities to pneumatic actuators,especially for the sensing ability originating directly from the actuator ***,a self-sensing pneumatic torsional actuator(SPTA)is designed based on the electromagnetic induction effect and magnetically responsive *** SPTA can generate feedback voltage and current with the deformation,in which the sensing function comes from its inherent *** investigate the mechanical and electrical characteristics,an experimental platform and a finite element model are established,*** find that the torsion angle and output torque increase in nonlinear with the actuating *** maximum torsion angle is 66.35°,which is 84.34%of that for the actuator fabricated by pure *** maximum output torque(24.9 N mm)improves by 23.19%compared with the actuator made by pure *** regards the electrical characteristics,the maximum feedback voltage and current are 2.90μV and 29.50 nA when the SPTA is actuated by a pressure of−40 *** also demonstrate that the relationship between the torsion angle and the magnetic flux change is approximately ***,the number of turns of wires,magnetic powders contents,and magnetic direction on the feedback voltage and current are *** show that the feedback voltage and current can be enhanced by increasing the number of turns and magnetic powders *** envision that the SPTA would be promising for soft robots to realize their accuracy control and intelligentization.

关键词： pneumatic torsional actuators self-sensing feedback voltage finite element modeling soft robots