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Comprehensive Evaluation of Distributed PV Grid-Connected Based on Combined Weighting Weights and TOPSIS-RSR Method

Energy Engineering 2024年第3期121卷 703-728页

作者： Yue Yang Jiarui Zheng Long Cheng yongnan zhu Hao Wu Key Laboratory of Modern Power System Simulation and Control&Renewable Energy Technology Ministry of Education(Northeast Electric Power University)Jilin132012China Siping Suburban Power Supply Company State Grid Jilin Electric Power Co.Ltd.Siping136000China

To effectively quantify the impact of distributed photovoltaic(PV)access on the distribution network,this paper proposes a comprehensive evaluation method of distributed PV grid connection combining subjective and objective combination of assignment and technique for order preference by similarity to an ideal solution(TOPSIS)—rank sum ratio(RSR)(TOPSIS-RSR)*** on the traditional distribution network evaluation system,a comprehensive evaluation system has been *** fully considers the new development requirements of distributed PV access on the environmental friendliness and absorptive capacity of the distribution grid and comprehensively reflects the impact of distributed PV grid *** analytic hierarchy process(AHP)was used to determine the subjective weights of the primary indicators,and the Spearman consistency test was combined to determine the weights of the secondary indicators based on three objective assignment *** subjective and objective combination weights of each assessment indicator were calculated through the principle of minimum *** the distance between the indicators to be evaluated and the positive and negative ideal solutions,the relative closeness ranking,and qualitative binning by TOPSIS-RSR method to obtain the comprehensive evaluation results of different *** setting up different PV grid-connected scenarios and utilizing the IEEE33 node simulation algorithm,the correctness and effectiveness of the proposed subject-object combination assignment and integrated assessment method are verified.

关键词： Distributed PV grid-connected comprehensive evaluation evaluation indicator system combined subjective and objective empowerment TOPSIS-RSR method

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Evaluation of the EMBOPIPE flow diverter device: in vivo and in vitro experiments

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中华神经外科杂志(英文) 2024年第3期10卷 1-9页

作者： zhu yongnan Zeng Fanyan Liu Jian Mu Shiqing Zhang Ying Xinjian Yang Department of Beijing Neurosurgical Institute Fengtai District Capital Medical University No. South Fourth Ring West Road Beijing People’s Republic of China Fengxian District Heartcare Medical Technology Co. Ltd Building No. Zhengbo Road Shanghai People’s Republic of China Neurosurgical Institute & Department of Neurosurgery Fengtai District Beijing Tiantan Hospital Capital Medical University No. South Fourth Ring West Road Beijing People’s Republic of China

Background Although flow diverter device (FDD) has brought revolutionized advances in endovascular treatment of intracranial aneurysms, it also presents considerable drawbacks as well, as the innovation for novel device has never stopped. This preclinical research aims to evaluate the safety and efficacy of a newly developed FDD, the EMBOPIPE, through in vivo and in vitro *** Aneurysms were induced in 20 New Zealand white rabbits which were randomized to three follow-up groups according to the time elapsed after EMBOPIPE implantation (28, 90, and 180 days). Additional EMBOPIPEs were implanted in the abdominal aorta to cover the renal artery in nine rabbits. Angiography was performed immediately after device placement in all groups. Aneurysm occlusion, patency of renal arteries, and pathological outcomes were assessed. For the in vitro experiments, we measured the thrombogenic potential of EMBOPIPEs (n = 5) compared with bare stents (n = 5) using the Chandler loop model. Evaluation indicators were the platelet counts, macroscopic observations and scanning electron *** EMBOPIPEs were successfully deployed in 19 of 20 rabbit aneurysms (95.0%). The rates of complete or near-complete aneurysm occlusion were 73.3%, 83.3%, and 100% in the 28-, 90-, and 180-day groups, respectively. All renal arteries covered by EMBOPIPEs remained patent, and the mean difference in renal artery diameter before and after the device placement in the three groups was 0.07 mm, 0.10 mm, and 0.10 mm, respectively (p = 0.77). Renal pathology was normal in all cases. The pathological findings of the aneurysms were as follows: thickened and adequate neointimal coverage at the aneurysm neck, minimal inflammatory response, near-complete smooth muscle cell layer, and endothelialization along the device. In vitro experiments showed that the platelet counts were significantly higher in EMBOPIPE blood samples than in bare stent samples and that platelet adhesion to the devic

关键词： Coating Flow diverter Phosphorylcholine Rabbit aneurysm model Thrombogenicity

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社会水循环碳排放综合测算模型——以黄河流域为例

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清华大学学报（自然科学版） 2024年第4期64卷 626-637页

作者：李嘉欣朱永楠彭少明赵勇李海红姜珊郑州大学水利与交通学院郑州450001 中国水利水电科学研究院流域水循环模拟与调控国家重点实验室北京100038 水利水电规划设计总院北京100120

社会水循环是能源消耗和碳排放的密集区,深入研究其各个环节的能耗和碳排放空间分布及强度特征对实现双碳目标至关重要。该研究基于生命周期评价方法,构建社会水循环碳核算体系及碳排放综合测算模型,以黄河流域66个地市(州)为例,估算社... 详细信息

社会水循环是能源消耗和碳排放的密集区,深入研究其各个环节的能耗和碳排放空间分布及强度特征对实现双碳目标至关重要。该研究基于生命周期评价方法,构建社会水循环碳核算体系及碳排放综合测算模型,以黄河流域66个地市(州)为例,估算社会水循环全生命周期能源消耗和碳排放。研究发现:2017年黄河流域下游地区的单位面积碳排放量最大,约是上游地区的7.4倍;在取水、供水、用水、排水四大环节中,用水环节碳排放量最大,其中居民生活用水的碳排放量最大,占用水环节碳排放的59.7%,占社会水循环总碳排放的54.7%,是社会水循环碳减排的重点环节;黄河流域社会水循环各环节碳排放强度依次为:用水>排水>供水>取水。针对碳减排重点区域和环节,提出了社会水循环节能降碳的建议。

关键词：社会水循环生命周期碳足迹黄河流域

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北京市污水处理系统温室气体排放及未来预测

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清华大学学报（自然科学版） 2024年第2期64卷 282-293页

作者：王明何国华窦鹏秦长海赵勇朱永楠姜珊中国水利水电科学研究院北京100038 流域水循环模拟与调控国家重点实验室北京100038 北京市水科学技术研究院北京100048

污水处理系统作为重要的温室气体排放源,其低碳运行受到国内外学者广泛关注。该文基于北京市污水处理流程,构建了污水处理系统温室气体排放核算体系,对2010—2020年全市污水处理系统的温室气体排放规模进行核算,并预测了2035年不同情景... 详细信息

污水处理系统作为重要的温室气体排放源,其低碳运行受到国内外学者广泛关注。该文基于北京市污水处理流程,构建了污水处理系统温室气体排放核算体系,对2010—2020年全市污水处理系统的温室气体排放规模进行核算,并预测了2035年不同情景下的温室气体排放特征。结果表明:2010—2020年北京市污水处理系统排放的温室气体总量明显上升,年均增幅达6.03%;污水处理是温室气体排放最多的环节,其直接和间接排放的温室气体总量占整个系统的51.27%;不同处理标准和处理工艺的排放强度差异明显,北京地方标准的排放强度大于国家标准,处理能力较高的膜生物反应器(MBR)工艺排放强度是目前普遍使用的厌氧-缺氧-好氧(AAO)工艺的1.77倍;在基准情景、高标准出水情景、低碳排放情景下,2035年北京市污水处理系统的温室气体排放量均会增加,其中低碳情景的增幅最小,但投资和占地面积分别需要多增加49.95亿元和192万m~2。基于该研究结果,从源头、过程和终端3个方面提出了相应温室气体减排建议。

关键词：温室气体污水处理系统情景预测北京

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水资源-能源-粮食-生态系统耦合协调及驱动力分析

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人民黄河 2024年第3期46卷 58-63页

作者：杨明明朱永楠赵勇杨文静樊煜河海大学水文水资源学院江苏南京210098 中国水利水电科学研究院流域水循环模拟与调控重点实验室北京100038

为加深对我国水资源、能源、粮食、生态系统协同演变趋势的认识,构建水资源-能源-粮食-生态多维系统指标体系,运用耦合协调度模型对我国2005—2020年水资源-能源-粮食-生态系统耦合协调度进行评价,并采用多因素归因分析法进行驱动力分... 详细信息

为加深对我国水资源、能源、粮食、生态系统协同演变趋势的认识,构建水资源-能源-粮食-生态多维系统指标体系,运用耦合协调度模型对我国2005—2020年水资源-能源-粮食-生态系统耦合协调度进行评价,并采用多因素归因分析法进行驱动力分析。结果表明:我国水资源-能源-粮食-生态系统耦合协调度从2005年的0.55增长到2020年的0.84,各地区耦合协调度从勉强协调发展水平过渡到中级协调发展水平,各子系统对耦合协调度上升的驱动分别经历了由粮食子系统到生态子系统再到水资源子系统主导的过程;能源子系统的贡献率虽然比较小,但是未来可能是各地区提升水资源-能源-粮食-生态系统多维系统协调发展水平的突破口。

关键词：水资源-能源-粮食-生态耦合协调度多因素归因分析驱动力

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Impact of large-scale vegetation restoration project on summer land surface temperature on the Loess Plateau, China

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Journal of Arid Land 2018年第6期10卷 892-904页

作者： HE Guohua ZHAO Yong WANG Jianhua WANG Qingming zhu yongnan State Key Laboratory of Stimulation and Regulation of Water Cycle in River Basin China Institute of Water Resources and Hydropower Research

A large-scale afforestation project has been carried out since 1999 in the Loess Plateau of China. However, vegetation-induced changes in land surface temperature (LST) through the changing land surface energy balance have not been well documented. Using satellite measurements, this study quantified the contribution of vegetation restoration to the changes in summer LST and analyzed the effects of different vegetation restoration patterns on LST during both daytime and nighttime. The results show that the average daytime LST decreased by 4.3°C in the vegetation restoration area while the average nighttime LST increased by 1.4°C. The contributions of the vegetation restoration project to the changes in daytime LST and nighttime LST are 58% and 60%, respectively, which are far greater than the impact of climate change. The vegetation restoration pattern of cropland (CR) converting into artificial forest (AF) has a cooling effect during daytime and a warming effect at nighttime, while the conversion of CR to grassland has an opposite effect compared with the conversion of CR to AF. Our results indicate that increasing evapotranspiration caused by the vegetation restoration on the Loess Plateau is the controlling factor of daytime LST change, while the nighttime LST change is affected by soil humidity and air humidity.

关键词： vegetation restoration project summer land surface temperature climate change Loess Plateau

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基于主成分分析和长短期记忆神经网络的光伏功率区间预测

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吉林电力 2024年第1期52卷 1-5页

作者：孙玮澳王文超张震吴昊朱勇男国网长春供电公司长春130012 国网四平城郊供电公司吉林四平136000

针对光伏发电功率的随机变化,提出一种基于主成分分析和长短期记忆神经网络的光伏功率区间预测方法,有效实现了光伏功率的区间预测。首先,将用于训练模型的输入数据进行主成分分析法降维,在提取数据特征的同时降低数据维度;然后,将降维... 详细信息

针对光伏发电功率的随机变化,提出一种基于主成分分析和长短期记忆神经网络的光伏功率区间预测方法,有效实现了光伏功率的区间预测。首先,将用于训练模型的输入数据进行主成分分析法降维,在提取数据特征的同时降低数据维度;然后,将降维后的数据与真实光伏功率一同输入基于分位数的长短期记忆神经网络预测模型中迭代训练,得到训练完毕的预测模型;最后,在对比仿真中验证了所提方法的有效性。

关键词：长短期记忆神经网络分位数回归区间预测主成分分析

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中国水-能-粮耦合系统协同安全发展战略研究

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中国水利 2024年第17期 5-12页

作者：王浩姜珊朱永楠赵勇何凡何国华李溦中国水利水电科学研究院流域水循环模拟与调控国家重点实验室北京100038

水是水-能-粮(WEF)耦合系统的核心要素,为保障国家粮食和能源安全,必须加强水资源管理,坚持水资源、能源和粮食协同安全发展。在系统总结国内外WEF耦合系统纽带关系研究进展、科学认识WEF基本内涵的基础上,分析了我国各省份水资源、能... 详细信息

水是水-能-粮(WEF)耦合系统的核心要素,为保障国家粮食和能源安全,必须加强水资源管理,坚持水资源、能源和粮食协同安全发展。在系统总结国内外WEF耦合系统纽带关系研究进展、科学认识WEF基本内涵的基础上,分析了我国各省份水资源、能源、粮食开发利用过程中存在的问题,揭示当前WEF耦合系统发展面临的能源需求持续增长与能源安全结构性矛盾日益凸显、不稳定因素加剧粮食安全风险、资源不匹配带来水资源约束趋紧、高质量发展对水-能-粮-生提出更高要求四大挑战,围绕区域特点和高质量发展目标,针对性提出了区域可持续发展模式与策略。研究建议,在西北资源富集地区,通过“四水四定”、水权交易及调水工程缓解水资源短缺;在京津冀地下水超采区,优化粮食安全布局,强化水与能源协同调控;在东北粮食增产区,拓展粮食生产空间,保护水资源合理开发利用;在南方水资源丰沛区,深化农业供给侧结构性改革,统筹“水风光储”一体化开发,以期为实现绿色低碳的可持续发展路径提供科学支撑与决策参考。

关键词：水-能-粮耦合系统协同安全资源禀赋供需比可持续发展

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Attribution analysis based on Budyko hypothesis for land evapotranspiration change in the Loess Plateau, China

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Journal of Arid Land 2019年第6期11卷 939-953页

作者： HE Guohua ZHAO Yong WANG Jianhua GAO Xuerui HE Fan LI Haihong ZHAI Jiaqi WANG Qingming zhu yongnan State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin Beijing 100038China China Institute of Water Resources and Hydropower Research Beijing 100038China Institute of Soil and Water Conservation Northwest A&F UniversityYangling 712100China

Land evapotranspiration(ET) is an important process connecting soil, vegetation and the atmosphere, especially in regions that experience shortage in *** 1999, the implementation of a large-scale vegetation restoration project has significantly improved the ecological environment of the Loess Plateau in ***, the quantitative assessment of the contribution of vegetation restoration projects to long-term ET is still in its *** this study, we investigated changes in land ET and associated driving factors from 1982 to 2014 in the Loess Plateau using Budyko-based partial differential ***, annual ET slightly increased by 0.28 mm/a and there were no large fluctuations after project *** attribution analysis showed that precipitation was the driving factor of inter-annual variability of land ET throughout the study period;the average impacts of precipitation, potential evapotranspiration, and vegetation restoration on ET change were 61.5%, 11.5% and 26.9%, *** results provide an improved understanding of the relationship between vegetation condition change and climate variation on terrestrial ET in the study area and can support future decision-making regarding water resource availability.

关键词： climate change vegetation evapotranspiration control factor arid region

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Roles of light transmission aggregometry and CYP2C19 genotype in predicting ischaemic complications during interventional therapy for intracranial aneurysms

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Stroke & Vascular Neurology 2023年第4期8卷 327-334页

作者： Yangyang Zhou Wenqiang Li Chao Wang Ruhang Xie yongnan zhu Qichen Peng Limin Zhang Hongqi Zhang Yuxiang Gu Shiqing Mu Jian Liu Xinjian Yang Department of Interventional Neuroradiology Beijing Neurosurgical Institute and Beijing Tiantan HospitalCapital Medical UniversityBeijingChina Department of Neurosurgery The First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenanChina Department of Clinical Diagnosis Laboratory Beijing Tiantan HospitalCapital Medical UniversityBeijingChina Department of Neurosurgery Xuanwu HospitalCapital Medical UniversityBeijingChina Department of Neurosurgery Huashan HospitalFudan UniversityShanghaiChina

Background and purpose Light transmission aggregometry(LTA)and CYP2C19 genotype analysis are commonly used to evaluate the antiplatelet effects of clopidogrel during the interventional treatment of intracranial *** aim of this study was to determine which test can predict ischaemic events during these *** Patient demographic information,imaging data,laboratory data and ischaemic complications were *** and CYP2C19 genotype results were compared,and multiple linear regression was performed to examine factors related to platelet *** regression analysis was performed to determine whether LTA and CYP2C19 could predict ischaemic complications and to identify other clinical risk *** operating characteristic curve analysis was conducted to calculate the cut-off value for predicting ischaemic complications.A subgroup analysis was also performed for different CYP2C19 genotype metabolisers,as well as for patients with flow diverters and traditional *** A total of 379 patients were included,of which 22 developed ischaemic *** platelet aggregation induced by ADP(ADP-MPA)could predict ischaemic events(p10 years(p=0.022)were independent risk factors for ischaemic events,while the CYP2C19 genotype was not associated with ischaemic *** the subgroup analysis,ADP-MPA could predict ischaemic events in fast metabolisers(p=0.004)and intermediate metabolisers(p=0.003).The cut-off value for ischaemic events was lower in patients with flow diverters(ADP-MPA=36.4%)than in patients with traditional stents(ADP-MPA=42.9%).Conclusions ADP-MPA can predict ischaemic complications during endovascular treatment of intracranial *** with flow diverters require stronger antiplatelet medication than patients with traditional stents.

关键词： CYP2C19 ischaemic intracranial

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