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Chinese Journal of Electrical Engineering 2024年第2期10卷 103-115页

作者： Lizhen Wu Heng Yang Jianping Wei wendong jiang College of Electrical and Information Engineering Lanzhou University of TechnologyLanzhou 730050China National Active Distribution Network Technology Research Center Beijing Jiaotong UniversityBeijing 100044China

Microgrids are networked control systems with multiple distributed generators(DGs).Microgrids are associated with many problems,such as communication delays,high sampling rates,and frequent controller updates,which make it challenging to realize coordination control among the ***,finite-time consensus algorithms and event-triggered control methods are combined to propose a distributed coordination control method for microgrid *** DG in the microgrid system serves as an agent node in the control network,and a distributed secondary controller is designed using finite-time consensus algorithm,such that the frequency and voltage restoration control has a faster convergence time and better anti-interference *** event-triggered function was designed based on the state information of the *** controller exchanges the state information at the trigger *** stability is analyzed using the Lyapunov stability theory,and it is verified that the controller cannot exhibit the Zeno phenomenon in the event-triggered process.A simulation platform was developed in Matlab/Simulink to verify that the proposed control method can effectively reduce the frequency of controller updates during communication delays and the burden on the communication network.

关键词： Microgrid event-triggered control distributed secondary control finite-time consensus algorithm coordination control

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电容式电压互感器二次反充电故障分析

电工技术 2024年第10期 180-183页

作者：梁光照徐强超王幸李津江文东谭桂轩段炼林加隽蒋文捷广州供电局变电管理一所广东广州510000

倒母操作和电容式电压互感器(CVT)停电检修时可能发生二次电压并列,如果某个CVT一次失电就会造成带电CVT通过异常并列回路向失电CVT反向充电的故障。这会引发电压回路电流剧增、空开跳闸,造成电压尽失进而导致保护拒动或误动、全站失压... 详细信息

倒母操作和电容式电压互感器(CVT)停电检修时可能发生二次电压并列,如果某个CVT一次失电就会造成带电CVT通过异常并列回路向失电CVT反向充电的故障。这会引发电压回路电流剧增、空开跳闸,造成电压尽失进而导致保护拒动或误动、全站失压等。深入分析了二次反充电故障原理,对某变电站CVT反充电故障进行Simulink建模仿真,仿真结果与计算值一致,并总结了预防故障发生的有效措施。

关键词：电容式电压互感器电压并列二次反充电全站失压

Development and technology status of energy storage in depleted gas reservoirs

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International Journal of Coal Science & Technology 2024年第2期11卷 198-221页

作者： Jifang Wan Yangqing Sun Yuxian He wendong Ji Jingcui Li Liangliang jiang Maria Jose Jurado China Energy Digital Technology Group Co. Ltd.Beijing 100044China School of Mechanical Engineering Yangtze UniversityJingzhou 434023China Department of Chemical and Petroleum Engineering The University of CalgaryCalgaryAlbertaCanada Geosciences Barcelona CSIC Spanish National Research Council08028 BarcelonaSpain

Utilizing energy storage in depleted oil and gas reservoirs can improve productivity while reducing power costs and is one of the best ways to achieve synergistic development of"Carbon Peak–Carbon Neutral"and"Underground Resource Utiliza-tion".Starting from the development of Compressed Air Energy Storage(CAES)technology,the site selection of CAES in depleted gas and oil reservoirs,the evolution mechanism of reservoir dynamic sealing,and the high-flow CAES and injection technology are *** focuses on analyzing the characteristics,key equipment,reservoir construction,application scenarios and cost analysis of CAES projects,and sorting out the technical key points and existing *** devel-opment trend of CAES technology is proposed,and the future development path is scrutinized to provide reference for the research of CAES projects in depleted oil and gas reservoirs.

关键词： Depleted gas reservoirs Technology and development Siting analysis Safety evaluation Compressed air energy storage

Ganoderma Lucidum Spore Oil enhances the effect of cyclophosphamide via inhibiting programmed death-1 and prolongs the survival of H22 tumor-bearing mice

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Journal of Traditional Chinese Medicine 2024年第4期44卷 652-659页

作者： jiang Zhaojian CAI Hongfei YUAN Cheng CAO Lin XU wendong HAN Yaming ZHANG Qin LI Jing WANG Qin LIU Juyan Guangzhou HanFang Pharmaceutical Company Limited National Engineering Research Center of Pharmaceutical Processing Technology of Traditional Chinese Medicine and Drug InnovationGuangdong Provincial Key Laboratory of Medicinal Lipids Zhongshan Medical College Sun Yat-sen University Guangzhou Pharmaceutical Holdings Limited National Engineering Research Center of Pharmaceutical Processing Technology of Traditional Chinese Medicine and Drug Innovation

OBJECTIVE: To investigate the effect of Ganoderma Lucidum Spore Oil(GLSO) on the tumor growth and survival of H22 tumor-bearing mice treated with cyclophosphamide(CTX), and explore the underlying ***: Allograft H22 hepatocellular carcinoma mouse model was applied to investigate the effect of GLSO on the tumor growth and survival of animals, and Kaplan-Meier survival analysis was used to analyze the life span. Plasma biochemical examination was used to determine the levels of alanine aminotransferase(ALT),aspartate aminotransferase(AST), urea(UREA) and creatinine(CRE). Western blot analysis was performed to detect Programmed Death-1(PD-1), Programmed Death Ligand 1(PD-L1), Janus Kinase 2(JAK2),phosphorylated Signal Transducer and Activator of Transcription 3(p-STAT3), and Signal Transducer and Activator of Transcription 3(STAT3) expression. RESULTS: GLSO increased the anti-tumor effect of CTX and prolonged the survival of H22 tumor-bearing mice treated with CTX. Meanwhile, GLSO increased the thymus index and showed no obvious toxicity to liver functions of animals. GLSO also decreased the level of UREA in H22 tumor-bearing mice treated with CTX. Furthermore, GLSO could inhibit the expression of PD-1 in spleen, which was independent of JAK2 expression and STAT3 phosphorylation. However, GLSO did not affect the expression of PD-L1, JAK2, and p-STAT3 in tumor tissue. CONCLUSION: GLSO could strengthen the anti-tumor effect of CTX and prolong the life span of H22 tumorbearing mice, while the underlying mechanism might be relevant to the amelioration effect of thymus function and inhibition of PD-1 expression in spleen. Furthermore, these findings implied the promising role of GLSO in combination with CTX to extend the survival of patients in clinical chemotherapy of hepatocellular carcinoma.

关键词： Ganoderma Lucidum Spore Oil carcinoma, hepatocellular cyclophosphamide programmed cell death 1 receptor survival

Current status and impact of the Young Scientist Foundation of the National Natural Science Foundation on Chinese young scholars in cardiovascular research

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Science China Life Sciences 2024年

作者： Fei Gao Zhenzhen Chen wendong Li Hujun jiang Rui Wang Department of Cardiology Beijing Anzhen HospitalCapital Medical University Hypertension Center Fuwai HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeState Key Laboratory of Cardiovascular DiseaseNational Center for Cardiovascular Diseases Department of Vascular Surgery Nanjing Drum Tower HospitalThe Affiliated Hospital of Nanjing University Medical School Department of Health Sciences National Natural Science Foundation of China

Cardiovascular disease (CVD) remains the leading cause of disease burden globally,and continued efforts are required in identifying new targets for CVD prevention and treatment (Vaduganathan et al.,2022).Breakthroughs in basic research are urgently needed to fully understand the CVD mechanism and improve clinical treatment modality.

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Effects of surface chlorine atoms on charge distribution and reaction barriers for photocatalytic CO_(2)reduction

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Nano Materials Science 2024年第2期6卷 235-243页

作者： wendong Zhang Wenjun Ma Yuerui Ma Peng Chen Qingqing Ye Yi Wang Zhongwei jiang Yingqing Ou Fan Dong Chongqing Key Laboratory of Green Synthesis and Application&Chongqing Key Laboratory of Inorganic Functional Materials College of ChemistryChongqing Normal UniversityChongqing401331China Suzhou Industrial Technology Research Institute of Zhejiang University Jiangsu215000China Department of Chemistry Faculty of ScienceNational University of SingaporeSingapore117543Singapore Yangtze Delta Region Institute(Huzhou)&Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaHuzhou313001China

Photocatalytic CO_(2)reduction to produce high value-added carbon-based fuel has been proposed as a promising approach to mitigate global warming ***,the conversion efficiency and product selectivity are still low due to the sluggish dynamics of transfer processes involved in proton-assisted multi-electron *** the formation energy barriers of intermediate products is an effective method to enhance the selectivity and productivity of final *** this study,we aim to regulate the surface electronic structure of Bi_(2)WO_(6)by doping surface chlorine atoms to achieve effective photocatalytic CO_(2)*** Cl atoms can enhance the absorption ability of light,affect its energy band structure and promote charge *** with DFT calculations,it is revealed that surface Cl atoms can not only change the surface charge distribution which affects the competitive adsorption of H_(2)O and CO_(2),but also lower the formation energy barrier of intermediate products to generate more intermediate*COOH,thus facilitating CO ***,this study demonstrates a promising surface halogenation strategy to enhance the photocatalytic CO_(2)reduction activity of a layered structure Bi-based catalyst.

关键词： Surface chlorine atoms Charge distribution Reaction barriers Photocatalytic CO_(2)reduction Bi_(2)WO_(6)

市民对本地公共游憩空间的行为特征分析——以江苏省无锡市馨和园为例

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内蒙古科技与经济 2022年第11期 25-27,30页

作者：蒋文栋广西民族大学管理学院广西南宁530006

文章构建了无锡市民对本地公共游憩空间的行为特征观测指标体系,从市民游憩时间段的选择、市民的游憩时间长短、市民的游憩行为方式、本地市民大多数情况下会前往距离多远的城市公园、本地市民的游憩频率等方面对无锡本地市民的公共游... 详细信息

文章构建了无锡市民对本地公共游憩空间的行为特征观测指标体系,从市民游憩时间段的选择、市民的游憩时间长短、市民的游憩行为方式、本地市民大多数情况下会前往距离多远的城市公园、本地市民的游憩频率等方面对无锡本地市民的公共游憩行为进行分析,总结了无锡市民对公共游憩空间的偏好和意向,从而为无锡公共游憩空间的规划和建设提供参考。

关键词：城市公共游憩空间城市公园市民游憩行为特征

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特高压输电塔龙卷风荷载特性的数值模拟

中国电力 2023年第10期56卷 153-163页

作者：张顺王振国姜文东徐枫段忠东哈尔滨工业大学(深圳)土木与环境工程学院广东深圳518055 国网浙江省电力有限公司电力科学研究院浙江杭州310014 国网浙江省电力有限公司浙江杭州310007

采用计算流体动力学(computational fluid dynamics,CFD)数值模拟方法研究了龙卷风作用下特高压输电塔的风荷载特性。通过建立龙卷风风场的CFD数值模型,验证了龙卷风风场结构的合理性。进一步建立特高压输电塔的精细化数值模型,重点分... 详细信息

采用计算流体动力学(computational fluid dynamics,CFD)数值模拟方法研究了龙卷风作用下特高压输电塔的风荷载特性。通过建立龙卷风风场的CFD数值模型,验证了龙卷风风场结构的合理性。进一步建立特高压输电塔的精细化数值模型,重点分析了风场中不同位置和不同风向角下输电塔各塔段的体型系数。研究结果表明:输电塔上部第1~4塔段在距离龙卷风风场中心1.5D(D为核心半径)处所受风荷载最大,下部第5~9塔段在距离龙卷风风场中心1.0D处所受风荷载最大;输电塔整体在距离龙卷风风场中心1.0D处所受风荷载最大。随着与龙卷风中心距离的增大,输电塔整塔横向风载系数最不利风向角从60°增大至90°,纵向风载体型系数最不利风向角在0°~30°范围内变化。在距离风场中心1.0D和1.5D处,输电塔整塔风载体型系数模拟值要大于规范值。

关键词：龙卷风输电塔地表粗糙风荷载 CFD数值模拟

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物种异步性在不同增温条件下维持群落稳定性

Journal of Plant Ecology 2024年第3期17卷 104-114页

作者： Qianxin jiang Juntao Zhu Peili Shi Yunlong He Yangjian Zhang Jun Yan wendong Xie Ning Zong Ge Hou Ruonan Shen Jiahe Zheng Key Laboratory of Ecosystem Network Observation and Modelling Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China College of Resources and Environment University of Chinese Academy of SciencesBeijing 100190China Center for Excellence in Tibetan Plateau Earth Sciences Chinese Academy of SciencesBeijing 100101China Nagqu Agricultural and Animal Husbandry Science and Technology Research and Promotion Center Nagqu 852000China

不对称季节性增温,即冬季的温度增加明显高于夏季,已成为全球变暖的一个重要特征,尤其在寒冷和高海拔地区。过去的研究主要关注全年的温度增高,而对冬季增温的关注相对较少。然而,关于冬季增温对生态系统功能的影响存在显著的知识空缺... 详细信息

不对称季节性增温,即冬季的温度增加明显高于夏季,已成为全球变暖的一个重要特征,尤其在寒冷和高海拔地区。过去的研究主要关注全年的温度增高,而对冬季增温的关注相对较少。然而,关于冬季增温对生态系统功能的影响存在显著的知识空缺。为了解决这个问题,我们在青藏高原的高寒草甸进行了为期8年的控制增温实验,设置3种处理:自然对照、全年增温和冬季增温。结果发现,无论是全年增温还是冬季增温都没有显著改变群落水平的物种丰富度。值得注意的是,通过物种异步性,群落生物量的稳定性得以维持。然而,增温对植物丰度组(优势种、常见种和稀有种)产生了显著影响。具体而言,冬季增温增强了优势种的稳定性,这是通过增加优势种的物种异步性,即禾本科植物和非禾本科杂草植物之间发生了补偿动态来实现的。相反,全年增温降低了常见种的稳定性,这与常见种丰富度的增加和常见种中异步性的下降相关。因此,本研究强调了高寒草甸在不同增温条件下通过物种异步动态来维持群落生物量稳定性的能力,这些研究结果为理解青藏高原高寒草甸生态系统特征提供了新见解。

关键词：不对称季节性增温优势种生态水平物种异步性时间稳定性冬季增温

基于三目视觉的输电导线弧垂三维重建方法研究

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测绘地理信息 2022年第4期47卷 67-72页

作者：阙波刘伟东姜文东王和平邹彪国网浙江省电力有限公司浙江杭州310007 国网通用航空有限公司北京102209

输电线弧垂的三维重建对及时发现输电线路潜在危险源和电网的安全稳定运行具有重要意义。为了保证重建的准确率,提出了一种基于三目视觉的输电线弧垂三维重建方法。首先单独标定各个摄像机,再基于特征点使用深度特征两两标定摄像机,并... 详细信息

输电线弧垂的三维重建对及时发现输电线路潜在危险源和电网的安全稳定运行具有重要意义。为了保证重建的准确率,提出了一种基于三目视觉的输电线弧垂三维重建方法。首先单独标定各个摄像机,再基于特征点使用深度特征两两标定摄像机,并采用光束平差参数优化方法标定三目摄像机;然后,通过视点平面扫描技术为每个摄像机计算空间概率图,使用半全局代价空间优化方法优化空间概率图,获取3个深度点云。最后,通过融合和过滤深度点云,最终得到重建后的深度图。实验证明本文的方法可以自动实现高精度的输电线弧垂的三维重建,有利于保证输电线路的安全。

关键词：深度特征三目视觉输电导线弧垂三维重建