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Recent developments in HVDC transmission systems to support renewable energy integration

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Global Energy Interconnection 2018年第5期1卷 595-607页

作者： Zhou Li Ruopei Zhan Yazhou Li Yan He jinming hou Xiaoling Zhao Xiao-Ping Zhang Southeast University Global Energy Interconnection Development and Cooperation Organization University of Birmingham

The demands for massive renewable energy integration, passive network power supply, and global energy interconnection have all gradually increased, posing new challenges for high voltage direct current(HVDC) power transmission systems, including more complex topology and increased diversity of bipolar HVDC transmission. This study proposes that these two factors have led to new requirements for HVDC control strategies. Moreover, due to the diverse applications of HVDC transmission technology, each station in the system has different requirements. Furthermore, the topology of the AC-DC converter is being continuously developed, revealing a trend towards hybrid converter stations.

关键词： Direct current transmission system Topology Control strategy AC-DC converter

Flexibility improvement evaluation of hydrogen storage based on electricity-hydrogen coupled energy model

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Global Energy Interconnection 2021年第4期4卷 371-383页

作者： Chen Jin Jinyu Xiao jinming hou Xiaoqing Wu Jinxuan Zhang Ershun Du Global Energy Interconnection Group Co. Ltd.Beijing 100031P.R.China Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education Jinan 250061P.R.China Laboratory of Low Carbon Energy Tsinghua UniversityBeijing 100084P.R.China

To achieve carbon neutrality by 2060,decarbonization in the energy sector is *** is expected to be vital for achieving the aim of carbon neutrality for two reasons:use of power-to-hydrogen(P2H)can avoid carbon emissions from hydrogen production,which is traditionally performed using fossil fuels;Hydrogen from P2H can be stored for long durations in large scales and then delivered as industrial raw material or fed back to the power system depending on the *** this study,we focus on the analysis and evaluation of hydrogen value in terms of improvement in the flexibility of the energy system,particularly that derived from hydrogen *** electricity-hydrogen coupled energy model is proposed to realize the hourly-level operation simulation and capacity planning optimization aiming at the lowest cost of *** on this model and considering Northwest China as the region of study,the potential of improvement in the flexibility of hydrogen storage is determined through optimization calculations in a series of study cases with various hydrogen demand *** results of the quantitative calculations prove that effective hydrogen storage can improve the system flexibility by promoting the energy demand balance over a long term,contributing toward reducing the investment cost of both generators and battery storage and thus the total energy *** advantage can be further improved when the hydrogen demand ***,a cost reduction by 20%is required for hydrogen-related technologies to initiate hydrogen storage as long-term energy storage for power *** study provides a suggestion and reference for the advancement and planning of hydrogen storage development in regions with rich sources of renewable energy.

关键词： Hydrogen storage Electricity-hydrogen coupling Optimization model Power-to-Hydrogen Carbon neutrality

Technical and economic demands of HVDC submarine cable technology for Global Energy Interconnection

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Global Energy Interconnection 2020年第2期3卷 120-127页

作者： Xiaoling Zhao Yao Liu Jiawei Wu Jinyu Xiao jinming hou Jinghui Gao Lisheng Zhong Global Energy Interconnection Development and Cooperation Organization No.8 Xuanwumennei StreetBeijing 100031P.R.China State Key Laboratory of Electrical Insulation and Power Equipment Xi’an Jiaotong UniversityXi’anShaanxi 710049P.R.China

Power transmission across the sea is an important part of global energy interconnection(GEI).To support the construction of GEI and to serve the needs of future clean energy trans-sea transportation and offshore wind power development,this study a)analyzes the requirements of the GEI backbone network pertaining to direct current(DC)submarine cable technology,and b)defines the key technical and economic indices of ultrahigh-voltage direct current(UHVDC)submarine cable based on theoretical *** research is based on the thermoelectric coupling model and the finite element *** is shown that the dielectric strength of the insulating materials of the±800 kV~±1100 kV/4000 MW^12000 MW UHVDC submarine cable(extrusion insulation)should be not less than 43~65 kV/mm,while the heat resistance is not less than 110°*** the cost of submarine cable is 5~10 times higher than that of the overhead line,the project investment need to be decreased to a level within the economical carrying capacity to guarantee extensive applicability of the HVDC submarine cable technology.

关键词： UHVDC submarine cable GEI Technical index Economic index

Economic and scale prediction of CO_(2)capture,utilization and storage technologies in China

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Petroleum Exploration and Development 2023年第3期50卷 751-764页

作者： ZHAO Xiaoling XIAO Jinyu hou jinming WU Jiawei LYU Xunyan ZHANG Jinxuan LIU Yao Global Energy Interconnection Development and Cooperation Organization Beijing 100031China

In response to the lack of global quantitative research on the potential and scale prediction of CO_(2) capture,utilization and storage(CCUS)in China under the background of carbon peak and carbon neutrality goals,this study predicts the future economic costs of different links of ccUS technologies and the carbon capture needs of different industries in the scenario of fossil energy *** on the CO_(2) utilization and storage potential and spatial distribution in China,a cost-scale calculation model for different regions in China in 206o is constructed to predict the whole-process economic cost and its corresponding scale potential of *** results show that a local+remote storage mode is preferred,together with a local utilization mode,to meet China's 27×10^(8)t/a CO_(2) emission reduction demand under the scenario of fossil energy ***,about 5×10^(8) t CO_(2) emission is reduced by capture utilization,and the whole-process cost is about-1400-200 RMB/t;about 22×10^(8) t CO_(2) emission is reduced by capture storage,and the whole-process cost is about 200-450 RMB/*** to the model results,it is recommended to develop the chemical utilization industry based on P2X(Power to X,where X is raw material)technology,construct the CcUs industrial cluster,and explore a multi-party win-win cooperation mode.A scheme of national trunk pipeline network connecting areas connecting intensive emission reduction demand areas and target storage areas is *** emission reduction cost of thermal power based on CCUS is calculated to be 0.16 RMB/(kW.h).

关键词： CcUS whole-process modeling cost-scale calculation model transport pipeline thermal power emission reductioncost

基于双馈风机转子侧变流器的次同步谐振抑制方法

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电力系统自动化 2016年第8期40卷 92-97页

作者：董晓亮李江侯金鸣国家电网公司华北分部北京市100053 东北电力大学电气工程学院吉林省吉林市132012

从双馈风机产生次同步谐振的机理出发,当双馈风机转速变化时,其电磁转矩变化量可以分为转子转矩变化量和定子转矩变化量两部分。基于双馈风机转子侧变流器,提出一种新的抑制次同步谐振的附加阻尼控制策略。通过在转子侧变流器控制策略... 详细信息

从双馈风机产生次同步谐振的机理出发,当双馈风机转速变化时,其电磁转矩变化量可以分为转子转矩变化量和定子转矩变化量两部分。基于双馈风机转子侧变流器,提出一种新的抑制次同步谐振的附加阻尼控制策略。通过在转子侧变流器控制策略中引入附加控制,产生一个与转速反相的附加转矩,为系统提出正阻尼。然后,利用PSCAD/EMTDC对所提出的附加阻尼控制策略进行仿真验证。结果表明,通过对转子侧变流器进行附加阻尼控制后,可以有效抑制次同步谐振的发生。

关键词：双馈风机次同步谐振转子侧变流器附加阻尼控制频率响应

3,4-二取代香豆素类衍生物的合成及其对HIV-1逆转录酶的抑制活性

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中国药科大学学报 2013年第1期44卷 28-34页

作者：黎文海侯金明尤启冬中国药科大学物理化学教研室南京211198 中国药科大学药物化学教研室南京210009

苯并六元杂环类化合物是重要的逆转录酶抑制剂,目前报道的活性较好的化合物在结构上都有一个疏水的苯环和与苯环相连的酰胺部分。通过对酰胺部分进行结构改造,探索其对HIV-1逆转录酶活性的影响。合成了一系列未见文献报道的3,4-二取代... 详细信息

苯并六元杂环类化合物是重要的逆转录酶抑制剂,目前报道的活性较好的化合物在结构上都有一个疏水的苯环和与苯环相连的酰胺部分。通过对酰胺部分进行结构改造,探索其对HIV-1逆转录酶活性的影响。合成了一系列未见文献报道的3,4-二取代香豆素类化合物,其结构经IR,1H NMR,MS及元素分析确证。初步的药理活性实验表明,23个化合物中有7个化合物具有一定的HIV-1逆转录酶抑制活性。

关键词： 3,4-二取代香豆素 HIV-1逆转录酶抑制剂合成抑制活性

以深远海风电为核心的能源岛能源外送经济性分析

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中国电力 2024年第9期57卷 94-102页

作者：刘钟淇刘耀侯金鸣全球能源互联网发展合作组织北京100031

深远海风电具有资源丰富、利用小时数高、不占用陆上土地等优势,对于推动实现碳达峰碳中和具有重要意义。以深远海风电为核心的海上能源岛,通过“海上风电+”的融合发展模式,能够提高海域综合利用率,提升整体效益,降低开发成本。建设以... 详细信息

深远海风电具有资源丰富、利用小时数高、不占用陆上土地等优势,对于推动实现碳达峰碳中和具有重要意义。以深远海风电为核心的海上能源岛,通过“海上风电+”的融合发展模式,能够提高海域综合利用率,提升整体效益,降低开发成本。建设以深远海风电为核心的能源岛,涉及漂浮式海上风电等能源开发技术、电制氢(氨)等能源综合利用技术、柔性直流输电和管道输氢等能源外送技术。介绍以深远海风电为核心的能源岛总体构成,比较分析适用于深远海风电为核心的能源岛大规模能源外送的输电技术,分别测算了汇集1 000 MW漂浮式海上风电的能源岛通过柔性直流送电的成本、电制氢后通过管道输氢的成本,并将输电成本与输氢成本进行了比较。通过比较分析,以深远海风电为核心的海上能源岛适宜选择柔性直流输电技术或者管道输氢作为能源外送方案。测算结果表明,在2023年、2030年和2050年,输送距离为100~200km时柔性直流输电方案的经济性均要优于输氢方案;输电方案与输氢方案的选择需综合考虑成本和登陆地区的消纳能力;预计在2050年,离岸100~200 km不同比例的电氢混合外送综合成本在0.18~0.27元/(kW·h)之间,与西部北部风光新能源基地、西南水风光基地外送东部的成本相比具有竞争力。

关键词：能源岛深远海风电柔性直流输电管道输氢经济性分析

Fe3+ ion quantification with reusable bioinspired nanopores

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Chinese Chemical Letters 2025年第2期36卷 207-212页

作者： Yanqiong Wang Yaqi hou Fengwei Huo Xu hou Institute of Flexible Electronics (IFE Future Technologies) Xiang’an Campus Xiamen University State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering Xiamen University Institute of Artificial Intelligence Xiamen University Department of Physics Research Institute for Biomimetics and Soft Matter Fujian Provincial Key Laboratory for Soft Materials Research Jiujiang Research Institute College of Physical Science and Technology Xiamen University Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM) Engineering Research Center of Electrochemical Technologies of Ministry of Education Xiamen University

Excessive Fe3+ion concentrations in wastewater pose a long-standing threat to human *** low-cost,high-efficiency quantification of Fe3+ion concentration in unknown solutions can guide environmental management decisions and optimize water treatment *** this study,by leveraging the rapid,real-time detection capabilities of nanopores and the specific chemical binding affinity of tannic acid to Fe3+,a linear relationship between the ion current and Fe3+ion concentration was *** this linear relationship,quantification of Fe3+ion concentration in unknown solutions was ***,ethylenediaminetetraacetic acid disodium salt was employed to displace Fe3+from the nanopores,allowing them to be restored to their initial conditions and reused for Fe3+ion *** reusable bioinspired nanopores remain functional over 330 days of *** recycling capability and the long-term stability of the nanopores contribute to a significant reduction in *** study provides a strategy for the quantification of unknown Fe3+concentration using nanopores,with potential applications in environmental assessment,health monitoring,and so forth.

关键词： Bioinspired nanopores Chemical binding affinity Fe3+ ion quantification Reusability Tannic acid

不同位置子群风电场主导因素变化对次同步谐振特性影响程度比较

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高电压技术 2016年第7期42卷 2259-2265页

作者：董晓亮侯金鸣田旭柳叶青国家电网公司华北分部北京100053 中国矿业大学(北京)机电与信息工程学院北京100083 大连科技学院电气工程学院大连116052

为了说明不同位置的子群风电场变化同样的参数范围对整个大型风电场的次同步特性的影响程度不同。以华北地区某大型风电场双馈风机串补系统为研究背景,采用3台风机来等效实际中处于不同位置的3个子风电场群,建立了整个系统的线性化模型... 详细信息

为了说明不同位置的子群风电场变化同样的参数范围对整个大型风电场的次同步特性的影响程度不同。以华北地区某大型风电场双馈风机串补系统为研究背景,采用3台风机来等效实际中处于不同位置的3个子风电场群,建立了整个系统的线性化模型,利用参与因子确定了系统中的次同步谐振模态。着重比较了各子风电场群中转速、输出功率、风机台数以及线路参数等主导因素变化对整个系统次同步谐振特性的影响。结果表明:离汇流母线电气距越近的子风电场,变化同样的参数范围,对系统的稳定性影响越大。子风电场群中投入的风机数量对于次同步谐振特性的影响与风机的转速有关,呈非线性关系。各个子风电场群与汇流变电站之间的输电线路阻抗增大时,系统的稳定性增强,系统的谐振频率增大。

关键词：子群风电场双馈风机次同步谐振转速输出功率