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考虑外送输电容量限制的梯级水光互补日前鲁棒调峰调度方法

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电力自动化设备 2024年第3期44卷 120-126页

作者：李杨吴峰包逸凡李大成李旭吴迪河海大学能源与电气学院江苏南京210000 国网江苏省电力有限公司超高压分公司江苏南京210000 中国电建集团贵阳勘测设计研究院有限公司贵州贵阳550081 华能澜沧江水电股份有限公司云南昆明650214

水光联合外送可促进新能源消纳,但光伏出力预测的不确定性会影响水光互补优化调度的经济性和安全性。提出一种考虑外送输电容量限制的梯级水光互补联合发电系统日前鲁棒调度方法。考虑光伏出力不确定性,构建水光互补联合发电系统的日前... 详细信息

水光联合外送可促进新能源消纳,但光伏出力预测的不确定性会影响水光互补优化调度的经济性和安全性。提出一种考虑外送输电容量限制的梯级水光互补联合发电系统日前鲁棒调度方法。考虑光伏出力不确定性,构建水光互补联合发电系统的日前调峰鲁棒优化调度模型,该模型以最小化受端电网剩余负荷峰谷差为目标,计及梯级水电的上、下游水力耦合约束。采用高效线性化方法对梯级水电运行的非线性模型进行处理,并利用对偶方法实现鲁棒模型的确定性转化。算例仿真结果表明,利用所提方法制定的梯级水电发电计划能充分考虑光伏出力的不确定性,兼顾联合发电系统调峰效果和光伏消纳,实现梯级水电和光伏的互补运行。

关键词：梯级水光联合发电互补运行鲁棒优化调峰调度外送输电容量限制

Facile one-pot synthesis of a novel all-carbon stair containing dimerized pentalene core from alkyne

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Chinese Chemical Letters 2022年第4期33卷 2047-2051页

作者： Hui Zhao Rakesh Kumar Gupta Wei Zhang Jiong Jia Qun Yu Zhiyong Gao Guilin Zhuang dacheng li Xingpo Wang Chen Ho Tung Di Sun Key Laboratory of Colloid and Interface Chemistry Ministry of EducationSchool of Chemistry and Chemical EngineeringState Key Laboratory of Crystal MaterialsShandong UniversityJi’nan 250100China College of Chemical Engineering and Materials Science Zhejiang University of TechnologyHangzhou 310032China School of Chemistry and Chemical Engineering Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine ChemicalsKey Laboratory of Green Chemical Media and ReactionsMinistry of EducationHenan Normal UniversityXinxiang 453007China Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology and School of Chemistry and Chemical EngineeringLiaocheng UniversityLiaocheng 252000China

The construction of all-carbon molecule frameworks remains challenging. Herein, we report a facile and efficient one-pot synthesis of a novel all-carbon stair containing dimerized pentalene core using inexpensive cyclopropyl alkyne catalyzed by in situ generated Cu(I) from the comproportionation reaction of Cu(II) salt and Cu powder under mild reaction conditions. The reaction proceeds via sequential acetylenic coupling, followed by cyclization and [2 + 2] cycloaddition to directly produce pentalene dimer, which is difficult to access by other established methods. Different mechanistic paths were studied for the pentalene formation using density functional theory, suggesting that the reaction also proceeds through acetylenic coupling followed by cyclization and [2 + 2] cycloaddition. Based on the activation energy barriers, Path 1 has the rate-determining step of 38.63 kcal/mol, which is the most thermodynamically preferred one among the four paths.

关键词： One-pot synthesis Penatlene dimerization Comproportionation reaction Crystal structure Theoretical calculations

基于客观权重赋权-优劣解距离法的水光互补能源基地补偿效益分摊

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电网技术 2024年第5期48卷 2003-2011,I0058页

作者：袁文楠黄显峰鲜于虎成李大成李旭河海大学水利水电学院江苏省南京市210098 中国电建集团贵阳勘测设计研究院有限公司贵州省贵阳市550081 华能澜沧江水电股份有限公司云南省昆明市650214

针对水光互补系统各电站补偿关系复杂且补偿效益分摊难以量化的问题,提出一种适用于量化水光互补系统效益补偿关系的求解方法,通过对梯级优化调度及水光互补优化调度后发电量的对比,得出水光互补动态过程指标和静态特性指标,建立水光互... 详细信息

针对水光互补系统各电站补偿关系复杂且补偿效益分摊难以量化的问题,提出一种适用于量化水光互补系统效益补偿关系的求解方法,通过对梯级优化调度及水光互补优化调度后发电量的对比,得出水光互补动态过程指标和静态特性指标,建立水光互补补偿效益分摊模型,并采用改进的客观权重赋权-优劣解距离法(criteria importance through intercriteria correlation-technique for order preference by similarity to an ideal solution,CRITIC-TOPSIS)求解补偿效益分摊比例,明晰各电站之间的损益关系。以澜沧江上游西藏段水光互补清洁能源基地为例进行求解,结果表明该方法考虑梯级水电站与光伏电站间的利益关系,同时兼顾梯级水电站内部的效益得失,分摊结果公平合理,可以平衡各主体之间的利害关系,有利于调动施益主体参与互补运行的积极性,实现清洁能源基地整体效益最大化。

关键词：水光互补系统补偿效益分摊指标优化调度分摊比例

Thermal energy storage:Challenges and the role of particle technology

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Particuology 2014年第4期12卷 2-8页

作者： Zhiwei Ge Yongliang li dacheng li Ze Sun Yi Jin Chuanping liu Chuan li Guanghui Leng Yulong Ding Institute of Process Engineering Chinese Academy of Sciences School of Chemical Engineering University of BirminghamBirmingham B152TTUK East China University of Science & Technology School of Mechanical Engineering University of Science & Technology Beijing

Thermal energy is at the heart of the whole energy chain providing a main linkage between the primary and secondary energy sources. Thermal energy storage （TES） has a pivotal role to play in the energy chain and hence in future low carbon economy. However, a competitive TES technology requires a number of scientific and technological challenges to be addressed including TES materials, TES components and devices, and integration of TES devices with energy networks and associated dynamic optimization. This paper provides a perspective of TES technology with a focus on TES materials challenges using molten salts based phase change materials for medium and high temperature applications. Two key challenges for the molten salt based TES materials are chemical incompatibility and low thermal conductivity. The use of composite materials provides an avenue to meeting the challenges. Such composite materials consist of a phase change material, a structural supporting material, and a thermal conductivity enhancement material. The properties of the supporting material could determine the dispersion of the thermal con- ductivity enhancement material in the salt. A right combination of the salt, the structural supporting material, and the thermal conductivity enhancement material could give a hierarchical structure that is able to encapsulate the molten salt and give a substantial enhancement in the thermal conductivity. Understanding of the structure-property relationships for the composite is essential for the formulation design and fabrication of the composite materials. linking materials properties to the system level performance is recommended as a key future direction of research.

关键词： Thermal energy storageComposite materialsStructure-property relationshipsRole of particle technology

NiSe_(2)/Ni(OH)_(2) Heterojunction Composite through Epitaxial-like Strategy as High-Rate Battery-Type Electrode Material

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Nano-Micro Letters 2020年第5期12卷 49-63页

作者： Hao Mei Zhaodi Huang Ben Xu Zhenyu Xiao Yingjie Mei Haobing Zhang Shiyu Zhang dacheng li Wenpei Kang Dao Feng Sun College of Science China University of Petroleum(East China)Qingdao 266580ShandongPeople’s Republic of China School of Material Science and Engineering China University of Petroleum(East China)Qingdao 266580ShandongPeople’s Republic of China Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002People’s Republic of China Key Laboratory of Eco-chemical Engineering Ministry of Education Laboratory of Inorganic Synthesis and Applied ChemistryCollege of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao 266402ShandongPeople’s Republic of China Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology School of Chemistry and Chemical EngineeringLiaocheng UniversityLiaocheng 252059ShandongPeople’s Republic of China

Constructing heterojunction is a promising way to improve the charge transfer efficiency and can thus promote the electrochemical properties.Herein,a facile and effective epitaxial-like growth strategy is applied to NiSe2 nano-octahe-dra to fabricate the NiSe2-(100)/Ni(OH)2-(110)heterojunction.The heterojunction composite and Ni(OH)2(performing high electrochemical activity)is ideal high-rate battery-type supercapacitor electrode.The NiSe2/Ni(OH)2 electrode exhibits a high specific capacity of 909 C g^-1 at 1 A g^-1 and 597 C g^-1 at 20 A g^-1.The assembled asymmetric supercapacitor composed of the NiSe2/Ni(OH)2 cathode and p-phenylenediamine-functional reduced graphene oxide anode achieves an ultrahigh specific capacity of 303 C g^-1 at 1 A g^-1 and a superior energy density of 76.1 Wh kg^-1 at 906 W kg^-1,as well as an outstanding cycling stability of 82%retention for 8000 cycles at 10 A g^-1.To the best of our knowledge,this is the first example of NiSe2/Ni(OH)2 heterojunction exhibiting such remarkable supercapacitor performance.This work not only provides a promising candidate for next-generation energy storage device but also offers a possible universal strategy to fabricate metal selenides/metal hydroxides heterojunctions.

关键词： Supercapacitor Heterojunction Epitaxial-like growth NiSe_(2)/Ni(OH)_(2)

基于云模型的水光互补清洁能源基地容量配置方案优选

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水利水电科技进展 2024年第1期44卷 44-51页

作者：黄显峰周引航张启凡李大成李旭吴迪河海大学水利水电学院江苏南京210098 武汉大学水利水电学院湖北武汉430072 中国电建集团贵阳勘测设计研究院有限公司贵州贵阳550081 华能澜沧江水电股份有限公司云南昆明650214

为优选水光互补清洁能源基地容量配置方案,从安全性、环保性、经济性、技术性4个方面选取14个指标构建了综合评价指标体系,采用改进云模型方法对容量配置方案进行评价。改进云模型方法以基于层次分析法改进的云模型求解主观权重,以熵权... 详细信息

为优选水光互补清洁能源基地容量配置方案,从安全性、环保性、经济性、技术性4个方面选取14个指标构建了综合评价指标体系,采用改进云模型方法对容量配置方案进行评价。改进云模型方法以基于层次分析法改进的云模型求解主观权重,以熵权法求解客观权重,组合赋权得到指标权重,再利用条件云发生器计算各指标的隶属度,最后根据级别特征值法计算容量方案等级评分,确定最优方案。将该方法应用于我国西南某清洁能源基地水光互补系统容量配置方案的优选,优选结果与集对分析法优选结果和实际选择方案均相符,证明了该方法的有效性与适用性。

关键词：水光互补系统容量配置方案改进云模型组合赋权集对分析

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多样化语言民俗策略的诗意书写

鞍山师范学院学报 2024年第1期26卷 66-69页

作者：李大成崔士岚本溪开放大学辽宁本溪117000 阜新高等专科学校辽宁阜新123000

长篇小说《咆哮》采用极具地域色彩的辽西方言、后现代色彩的叙事语言、诗化风格的抒情性语言,书写辽西抗战史实,在艺术视野、人物形象、结构布局等方面呈现出一部艺术巨著的品格,对研究辽西语言风格与民俗文化具有深刻的意义与价值,不... 详细信息

长篇小说《咆哮》采用极具地域色彩的辽西方言、后现代色彩的叙事语言、诗化风格的抒情性语言,书写辽西抗战史实,在艺术视野、人物形象、结构布局等方面呈现出一部艺术巨著的品格,对研究辽西语言风格与民俗文化具有深刻的意义与价值,不同的语言风格在展现其各自特点、发挥各自作用的同时,形成对比,表达出作者的情感倾向,深化了主题。此外,鲜活的民俗生活展示也映射出作者立足原生状态而努力打造创生生活和追求全新社会生活的艺术理想。

关键词：语言风格对比民俗艺术理想

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大沽全海笋的营养成分分析与评价

水产科学 2024年第2期43卷 304-311页

作者：傅志宇李大成白永安于笛于喆王庆志郑杰辽宁省海洋水产科学研究院辽宁大连116023 盘锦光合蟹业有限公司辽宁盘锦124000

为充分了解大沽全海笋的营养成分和食用价值,对采集自锦州海域的(30.0±5.0)g的大沽全海笋水管和内脏团的常规营养成分、部分矿物质元素含量、脂肪酸组成以及氨基酸组成和含量进行分析和评价。试验结果显示:大沽全海笋水管的粗蛋白含量(... 详细信息

为充分了解大沽全海笋的营养成分和食用价值,对采集自锦州海域的(30.0±5.0)g的大沽全海笋水管和内脏团的常规营养成分、部分矿物质元素含量、脂肪酸组成以及氨基酸组成和含量进行分析和评价。试验结果显示:大沽全海笋水管的粗蛋白含量(75.45%)远高于内脏团(47.03%),粗脂肪(1.68%)、灰分(15.23%)和总糖(4.37%)含量远低于内脏团;矿物质元素中,水管仅钠、铜和锌含量高于内脏团;水管和内脏团均含有32种脂肪酸,多不饱和脂肪酸占比分别为30.02%和20.71%,水管二十碳五烯酸(9.48%)和二十二碳六烯酸(14.97%)占比均显著高于内脏团;水管和内脏团均含有18种氨基酸,且谷氨酸、天冬氨酸和甘氨酸含量最高,水管的必需氨基酸含量(23.63%)、呈味氨基酸含量(28.50%)均高于内脏团,必需氨基酸/非必需氨基酸二者相近,分别为53.43 g/100 g和56.59 g/100 g;水管氨基酸评分和化学评分的第一限制性氨基酸均为色氨酸,第二限制性氨基酸均为蛋氨酸+胱氨酸,水管和内脏团的必需氨基酸指数分别为66.38和50.14。大沽全海笋水管和内脏团均具有高蛋白、低脂肪的营养组成特性,本试验结果可为其高值化综合开发利用提供基础数据。

关键词：大沽全海笋营养成分脂肪酸氨基酸矿物质

梯级水库群溃坝洪水风险分析——以澜沧江上游为例

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河南科学 2024年第2期42卷 157-164页

作者：马黎田耘陈灵淳李大成梅胜尧吴迪钟启明中国电建集团贵阳勘测设计研究院有限公司贵阳550000 华能澜沧江水电股份有限公司昆明650011 南京水利科学研究院岩土工程研究所南京210024 水利部水库大坝安全重点实验室南京210024

梯级水库的建设是开发利用我国丰富水能资源、保障国家能源安全、实现减排目标的重要途径.但是由于部分水库结构老化、地势险峻以及近几年极端天气频发等原因,极有可能造成单坝溃决,继而引起梯级连溃,最终使整条流域系统瘫痪,为下游城... 详细信息

梯级水库的建设是开发利用我国丰富水能资源、保障国家能源安全、实现减排目标的重要途径.但是由于部分水库结构老化、地势险峻以及近几年极端天气频发等原因,极有可能造成单坝溃决,继而引起梯级连溃,最终使整条流域系统瘫痪,为下游城镇带来不可估量的经济和生命损失.为准确预测梯级连溃发生后的危险程度及影响范围,基于心墙坝漫顶溃坝数学模型和HEC-RAS软件提出了梯级连溃地貌特征演变及洪水演进计算方法,并应用于澜沧江流域梯级水库RM-XW水电站大尺度连溃分析.结果表明,在遭遇1.4倍超标准洪水的情况下,RM水电站发生漫顶溃决,溃决过程中,心墙发生四次折断,并伴随溃口迅速扩张以及溃决流量激增,最高峰值流量达699986.5 m^(3)/s,溃决洪水演进至下游,使WNL-XW水电站相继发生漫顶.河道距离、坝型特征和坝体物理参数是影响梯级连溃过程中溃决流量大小的重要因素.

关键词：梯级水库心墙坝洪水演进漫顶溃坝 HEC-RAS软件