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A Multi-time Scale Tie-line Energy and Reserve Allocation Model Considering Wind Power Uncertainties for Multi-area Systems

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CSEE Journal of Power and Energy Systems 2021年第4期7卷 677-687页

作者： Jian Xu Siyang Liao Haiyan Jiang danning zhang Yuanzhang Sun Deping Ke Xiong Li Jun Yang Xiaotao Peng Liangzhong Yao School of Electrical Engineering and Automation Wuhan UniversityWuhan 430072China State Grid(Suzhou)City&Energy Research Institute Suzhou 215000China State Grid Zhengzhou Electric Power Supply Company Zhengzhou 450000China

Continued expansion of the power grid and the increasing proportion of wind power centralized integration leads to requirements in sharing both energy and reserves among multiple areas under a hierarchical control structure,which successively requires a correction between schedule plans within multi-time scale.In order to address this problem,this paper develops an information integration method integrating complicated relationships among fuel cost,total thermal power output,reserve capacity,owned reserves and expectations of load shedding and wind curtailment,into three types of time-related relationship curves・Furthermore,a multi-time scale tieline energy and reserves allocation model is proposed,which contains two levels in the control structure,two time scales in dispatch sequence and multiple areas integrated within wind farms as scheduling objects・The efficiency of the proposed method is tested in a 9-bus test system and IEEE 118-bus system.The results show that a cross-regional control center is able to approach the optimal scheduling results of the whole system with the integrated uploaded relationship curves.The proposed model not only relieves energy and reserve shortages in partial areas but also allocates them to more urgent need areas in a high effectivity manner in both day-ahead and intraday time scales.

关键词： Energy and reserve allocation hierarchical control structure multi-area system multi-time scale economic dispatch wind power

Merits and limitations of TiO2-based photocatalytic pretreatment of soils impacted by crude oil for expediting bioremediation

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Frontiers of Chemical Science and Engineering 2017年第3期11卷 387-394页

作者： Yu Yang Hassan Javed danning zhang Deyi Li Roopa Kamath Kevin McVey Kanwartej Sra Pedro J.J. Alvarez Department of Civil and Environmental Engineering Rice University Houston TX 77005 USA Department of Chemistry Rice University Houston TX 77005 USA Department of Civil and Environmental Engineering Tongji University Shanghai 200092 China Chevron Energy Technology Company Houston TX 77002 USA

Heavy hydrocarbons （HHCs） in soils impacted by crude oil spills are generally recalcitrant to biodegrada- tion due to their low bioavailability and complex chemical structure. In this study, soils were pretreated with varying concentrations of ultraviolet radiation A （UVA） or ultraviolet radiation C （UVC） activated titanium dioxide （TiO2）（1%-5%） under varying moisture conditions （0%- 300% water holding capacity （WHC）） to enhance biodegradation of HCCs and shorten remediation time- frames. We demonstrate that pretreatment of impacted soils with UVC-activated TiO2 in soil slurries could enhance bioremediation of HHCs. Total petroleum hydrocarbon （TPH） removal after 24 h exposure to UVC （254 nm and 4.8 mW/cm2） was （19.15：1.6）% in slurries with 300% WHC and 5 wt-% TiO2. TPH removal was non-selective in the C15-C36 range and increased with moisture content and TiO2 concentration. In a 10-d bioremediation test, TPH removal in treated soil increased to （26.05：0.9）%, compared to （15.45：0.8）% for controls without photo- catalytic pre-treatment. Enhanced biodegradation was also confirmed by respirometry. This suggests that addition of UVC-activated TiO2 to soil slurries can transform recalcitrant hydrocarbons into more bioavailable and biodegradable byproducts and increase the rate of subsequent biodegradation. However, similar results were not observed for soils pretreated with UVA activated TiO2. This suggests that activation of TiO2 by sunlight and direct addition of TiO2 to unsaturated soils within landfarming setting may not be a feasible approach. Nevertheless, less than 1% of UVA （7.5 mW/cm2） or UVC （1.4 mW/cm2） penetrated beyond 0.3 cm soil depth, indicating that limited light penetration through soil would hinder the ability of TiO2 to enhance soil bioremediation under land farming conditions.

关键词： ZiO2 pretreatment bioremediation total petroleum hydrocarbons ultraviolet

Self-determinate evaluation method based on condition of weights non-dictatorial rate

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Journal of Systems Engineering and Electronics 2009年第2期20卷 310-320页

作者： zhang danning Yi Pingtao Guo Yajun School of Business Administration Liaoning Univ. Shenyang 110036 P. R. China School of Business Administration Northeastern Univ. Shenyang 110004 P. R. China

The condition of weightes non-dictatorship is extended and a comprehensive evaluae method emboding self-determinate which is combined with competitive view optimization principles is built. The basic process includes simulating the model of economic man＇s self-benefit bahaviors, taking the place of experts to evaluate, bringing in the model of minimizing the sum of included angles to integrate the information of multiple objects and put the objects in order finally. The method has the advangtages of less dependendence on the subjective information, plenty of information, fair process and simple caculating. Finally, an application example is given to illustrate the effectiveness of the proposed method.

关键词： condition of weights non-dictatorial rate principle of competitive view optimization self-determinate evaluation comprehensive evaluation

Density Weighted Averaging Operator and Application

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Wuhan University Journal of Natural Sciences 2017年第6期22卷 535-540页

作者： zhang danning YI Pingtao LI Weiwei School of Economics Liaoning University School of Business Administration Northeastern University

Exploring structural characteristics implied in initialdecision making information is an important issue in the process of aggregation. In this paper we provide a new family of aggregation operator called density weighted averaging operator（abbreviated as DWA operator）, which carries out the aggregation by classification. In this case, not only the hidden structural characteristics can be identified, some commonly known aggregation operators can also be incorporated into the function of the DWA operator. We further discuss the basic properties of this new operator, such as commutativity, idempotency, boundedness and monotonicity withcertain condition. Afterwards, two important issues related to the DWA operator are investigated, including the arguments partition and the determination of density weights. At last a numerical example regarding performance evaluation of employees is developed to illustrate the using of this new operator.

关键词： decision making information aggregation density weighted averaging operator density weighting vector

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中国产业数字化水平测度及空间特征研究

辽宁大学学报（哲学社会科学版） 2023年第3期51卷 27-40页

作者：杨雪婷张丹宁辽宁大学经济学院辽宁沈阳110136

产业数字化是数字经济与实体经济深度融合的关键途径。文章在归纳其演进过程的基础上,阐释其内涵特征;从基础支撑、场景应用、政策支撑三个层面构建产业数字化水平指标体系,并基于客观序贯分析法进行指标赋权;用线性聚合方法计算其水平... 详细信息

产业数字化是数字经济与实体经济深度融合的关键途径。文章在归纳其演进过程的基础上,阐释其内涵特征;从基础支撑、场景应用、政策支撑三个层面构建产业数字化水平指标体系,并基于客观序贯分析法进行指标赋权;用线性聚合方法计算其水平;通过核密度估计明晰其分布动态,用莫兰指数(Moran’s I)测度其全局(局部)空间自相关,用Lisa图描绘其局部空间自相关,用(空间)马尔科夫链测度其转移概率。结果显示,中国产业数字化水平逐年提高,呈现强烈的空间自相关集聚状态,随着空间滞后水平的上升,产业数字化向更高水平转移的概率变大。

关键词：产业数字化演进阶段水平测度空间特征

定制化知识密集型服务系统价值共创耦合机制研究

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科技进步与对策 2019年第17期36卷 66-71页

作者：张丹宁相辉辽宁大学经济学院辽宁沈阳110036 东北大学工商管理学院辽宁沈阳110189

满足顾客个性化需求的定制化知识密集型服务已成为服务业发展的主流业态。在明晰定制化知识密集型服务内涵、特征和类型的基础上,基于服务提供者与客户间的紧密互动对定制化知识密集型服务过程中包含系统耦合与过程耦合的双重价值共创... 详细信息

满足顾客个性化需求的定制化知识密集型服务已成为服务业发展的主流业态。在明晰定制化知识密集型服务内涵、特征和类型的基础上,基于服务提供者与客户间的紧密互动对定制化知识密集型服务过程中包含系统耦合与过程耦合的双重价值共创耦合机制进行系统分析,旨在为提升客户定制化知识密集型服务选择的科学决策水平及促进产业快速发展提供理论支撑。

关键词：定制化知识密集型服务价值共创服务提供者客户双重耦合

Al-Ti微叠层材料结构优化及抗侵彻性能仿真模拟

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特种铸造及有色合金 2022年第10期42卷 1242-1249页

作者：张丹宁孟令刚杨阳景栋任政吴建兵周秉文张兴国大连理工大学材料科学与工程学院辽宁大连116000 中国兵器科学研究院宁波分院大连理工大学宁波研究院辽宁大连116000

基于LS-DYNA软件模拟分析了Al-Ti微叠层材料结构不同时的抗侵彻性能,研究了微叠层结构中Ti体积分数和叠层结构变化对抗侵彻性能的影响,分析不同背板材料及面密度时Al-Ti微叠层复合靶板的抗侵彻性能。结果表明,当Ti体积分数为27.7%时材... 详细信息

基于LS-DYNA软件模拟分析了Al-Ti微叠层材料结构不同时的抗侵彻性能,研究了微叠层结构中Ti体积分数和叠层结构变化对抗侵彻性能的影响,分析不同背板材料及面密度时Al-Ti微叠层复合靶板的抗侵彻性能。结果表明,当Ti体积分数为27.7%时材料抗侵彻性能最好;?7.62 mm穿燃弹在初速为808 m/s时侵彻微叠层材料的极限厚度为12 mm,?12.7 mm穿燃弹在初速为818 m/s、488 m/s时侵彻微叠层材料的极限厚度分别为18 mm和11 mm。韧性层呈正向梯度分布的Ti/AlTi微叠层复合材料靶板的抗侵彻性能优于反向梯度分布及均匀分布的靶板;Al-Ti微叠层材料靶板与Q235钢背板的厚度比为2∶1时抗侵彻性能最好;Al-Ti微叠层材料与AZ31镁合金构成复合靶板的抗侵彻性能最佳。

关键词： Al-Ti微叠层材料钛体积分数抗侵彻性能仿真

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公共服务水平对居民健康的影响研究

调研世界 2024年第2期 62-75页

作者：杨胜利冯丹宁张孟阳河北大学经济学院

本文使用2010—2020年中国家庭追踪调查(CFPS)和中国统计年鉴数据,构建了多层次Logistic回归模型,验证了公共服务水平与居民健康之间的关系。研究发现:公共服务水平提升对居民健康具有明显的促进作用,但在不同群体中,其作用效果有所不同... 详细信息

本文使用2010—2020年中国家庭追踪调查(CFPS)和中国统计年鉴数据,构建了多层次Logistic回归模型,验证了公共服务水平与居民健康之间的关系。研究发现:公共服务水平提升对居民健康具有明显的促进作用,但在不同群体中,其作用效果有所不同;公共服务可以调节个体属性对居民健康的影响,公共服务削弱了年龄对居民健康的负向影响,并削弱了户籍和收入对居民健康的正向影响,但强化了性别对居民健康的正向影响,有利于促进健康平等;公共服务水平提升有利于居民树立积极健康观,提升健康素养,形成科学的生活方式,合理使用医疗资源做好疾病预防、及时诊治、愈后康复,进而提升居民健康水平。

关键词：居民健康公共服务水平个体属性多层次Logistic回归

基于NARX神经网络的PM2.5/10浓度值预测模型——以咸阳市两寺渡监测站为例

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地球环境学报 2020年第2期11卷 161-168页

作者：张丹宁张猛张博西安交通大学人居环境与建筑工程学院西安710049

PM2.5和PM10(记为PM2.5/10)对空气质量和人类健康有着严重威胁,日益引起国内外的关注,并成为大气污染控制工程中最重要的部分。基于陕西省咸阳市两寺渡监测站的污染物(PM2.5、PM10、NO2、NO、NOx、CO)和相关气象参数的监测数据,建立起... 详细信息

PM2.5和PM10(记为PM2.5/10)对空气质量和人类健康有着严重威胁,日益引起国内外的关注,并成为大气污染控制工程中最重要的部分。基于陕西省咸阳市两寺渡监测站的污染物(PM2.5、PM10、NO2、NO、NOx、CO)和相关气象参数的监测数据,建立起基于非线性有源自回归神经网络的预测模型,并分别针对不同预测时间段确定最优网络结构,从而实现了对未来6小时、12小时以及24小时PM2.5/10浓度的有效预测。实验结果表明:(1)NARX神经网络模型可对未来24小时内的PM2.5/10污染物浓度进行较为准确的预测;(2)对于PM2.5/10未来6小时的预测能力优于对12小时、24小时的预测;(3)预测值偏高或偏低的结果与前后时间段内的气象因素及其他污染物浓度变化情况也具有相关性。

关键词： PM2.5 PM10 空气质量 NARX 递归神经网络大气污染预测