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Interruption Characteristics of High-speed Switches in 500 kV Fault Current Limiter with High Coupled Split Reactance

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CSEE Journal of Power and Energy Systems 2023年第4期9卷 1577-1584页

作者： Yanzhe Zhang Shixin Xiu Qiang Tang Shenli Jia Bo Chu Wenxiong Mo Yong Wang haibo su State Key Laboratory of Electrical Insulation and Power Equipment the School of Electrical EngineeringXi'an Jiaotong UniversityXi'an 710049China. Test and Research Institute of Guangzhou Power supply Company Ltd. Guangzhou 510410China.

A 500 kV high-voltage AC fault current limiter(FCL)based on a high coupled split reactor(HCSR)is pro-posed by the National key R&D project team.Low impedance under normal conditions and high impedance under short-circuit conditions are accomplished by the cooperation of HCSR and high-speed switches.High-speed switches play an important role in current limiting processes,thus interruption characteristics of the high-speed switch in the 500 kV FCL are studied in this paper.The simulation model of the FCL and the external equivalent power grid are established.The short-circuit current and recovery voltage characteristics of the high-speed switch in FCL are simulated.The results show that maximum DC component of the short-circuit current of the high-speed switch reaches 91%,the maximum peak value is 118 kA,and the longest arcing time is 14.8 ms.There is a discontinuity in the curve of the short-circuit current peak and arcing time as a function of the short-circuit occurrence time;the peak recovery voltage of a single break of the high-speed switch has a maximum value of 87.5 kV under a three-phase ungrounded short-circuit condition,and the rate of rise of recovery voltage is o.22 kV/s.The recovery voltage peak shows a period change with the short-circuit occurrence time,and the period is 10 ms.The effects of the shunt capacitor value and short-circuit ground resistance on the recovery voltage of high-speed switching are also studied.The research can be used for reference by R&D personnel and testersof500kVFCLs.Index Terms-Fault current limiter(FCL),high coupled split reactor(HCSR),high-speed switch,interruption characteristics,short circuit current.

关键词： Fault current limiter(FCL) high coupled split reactor(HCSR) high-speed switch interruption characteristics short circuit current.

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Polyketides with potential bioactivities from the mangrove‑derived fungus Talaromyces sp.WHUF0362

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Marine Life Science & Technology 2023年第2期5卷 232-241页

作者： Huawei Lv haibo su Yaxin Xue Jia Jia Hongkai Bi Shoubao Wang Jinkun Zhang Mengdi Zhu Mahmoud Emam Hong Wang Kui Hong Xing-Nuo Li College of Pharmaceutical Science&Key Laboratory of Marine Fishery Resources Exploitment&Utilization of Zhejiang Province Zhejiang University of TechnologyHangzhou 310014China School of Pharmaceutical Sciences Wuhan UniversityWuhan 430072China Department of Pathogen Biology&Jiangsu Key Laboratory of Pathogen Biology Nanjing Medical UniversityNanjing 211166China Beijing Key Laboratory of Drug Target Research and New Drug Screening Institute of Materia MedicaChinese Academy of Medical SciencesBeijing 100700China Research Center of Analysis and Measurement Zhejiang University of TechnologyHangzhou 310014China Department of Phytochemistry and Plant Systematics National Research CentreGizaEgypt

Metabolites of microorganisms have long been considered as potential sources for drug discovery.In this study,fve new depsidone derivatives,talaronins A-E(1-5)and three new xanthone derivatives,talaronins F-H(6-8),together with 16 known compounds(9-24),were isolated from the ethyl acetate extract of the mangrove-derived fungus Talaromyces species WHUF0362.The structures were elucidated by analysis of spectroscopic data and chemical methods including alkaline hydrolysis and Mosher’s method.Compounds 1 and 2 each attached a dimethyl acetal group at the aromatic ring.A putative biogenetic relationship of the isolated metabolites was presented and suggested that the depsidones and the xanthones probably had the same biosynthetic precursors such as chrysophanol or rheochrysidin.The antimicrobial activity assay indicated that compounds 5,9,10,and 14 showed potent activity against Helicobacter pylori with minimum inhibitory concentration(MIC)values in the range of 2.42-36.04μmol/L.While secalonic acid D(19)demonstrated signifcant antimicrobial activity against four strains of H.pylori with MIC values in the range of 0.20 to 1.57μmol/L.Furthermore,secalonic acid D(19)exhibited cytotoxicity against cancer cell lines Bel-7402 and HCT-116 with IC_(50) values of 0.15 and 0.19μmol/L,respectively.The structure–activity relationship of depsidone derivatives revealed that the presence of the lactone ring and the hydroxyl at C-10 was crucial to the antimicrobial activity against H.pylori.The depsidone derivatives are promising leads to inhibit H.pylori and provide an avenue for further development of novel antibiotics.

关键词： Mangrove-derived fungus Talaromyces sp. Depsidone Xanthone Antimicrobial

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纤维增强复合材料多模式内聚断裂的相场模型

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工程设计学报 2024年第3期31卷 301-308页

作者：粟海波陈波潓吴熙王亮上海交通大学船舶海洋与建筑工程学院上海200240 浙大城市学院工程学院浙江杭州310015 城市基础设施智能化浙江省工程研究中心浙江杭州310015

经典的断裂相场法是基于脆性断裂理论建立的变分方法,因此其无法准确描述复合材料的准脆性断裂行为。基于此,提出了一种多相场模型来描述纤维增强复合材料的多模式内聚断裂行为。通过对各向异性相场驱动力和损伤本构关系的合理定义,提... 详细信息

经典的断裂相场法是基于脆性断裂理论建立的变分方法,因此其无法准确描述复合材料的准脆性断裂行为。基于此,提出了一种多相场模型来描述纤维增强复合材料的多模式内聚断裂行为。通过对各向异性相场驱动力和损伤本构关系的合理定义,提出了一种混合型内聚断裂相场模型,并通过推导得到了相应的演化方程与强度准则。采用该模型进行了3种复合材料板的裂纹扩展及失效仿真,结果表明,所提出的多相场模型能够有效模拟复合材料的多模式内聚断裂行为,具有较高的应用价值。

关键词：复合材料相场模拟内聚断裂失效机理

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Analysis of influence of a novel inductive fault current limiter on the circuit breaker in 500 kV power system

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High Voltage 2021年第6期6卷 997-1008页

作者： Qiang Tang Shenli Jia Yanzhe Zhang Shixin Xiu Wenxiong Mo Yong Wang haibo su Department of Electrical Engineering Xi'an Jiaotong UniversityChina Test and Research Institute of Guangzhou Power supply Company Ltd. GuangzhouChina

A contribution to the engineering application of a proposed 500 kV fault current limiter(FCL)is presented.A new type of FCL composed of a highly coupled split reactor(HCSR)and fast switches is proposed.When the circuit breaker(CB)in series with the FCL in the 500 kV power system interrupts the limited fault current,the rate of rise of the recovery voltage(RRRV)reaches a value much higher than the rated value.Based on a simplified equivalent single‐phase circuit,the influence of the new FCL on the interruption procedure of the CB is simulated and discussed.The simulation results show that the high RRRV is caused by high‐frequency resonant oscillations between the HCSR and its parasite capacitance.Analysis indicates that when the reactance of the FCL is close to the short circuit reactance of the system,the RRRV will reach the highest value.To solve this issue,we proposed installing a shunt capacitor with the FCL.Simulation results showed that the RRRVunder all fault modes could be restrained to below the rated value by introducing a certain shunt capacitor.

关键词： fault inductive power

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Reservoir Characterization of Special Dolomite Rock of Fengcheng Formation in Junggar Basin, China

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Journal of Geoscience and Environment Protection 2023年第9期11卷 333-350页

作者： Famu Huang Yun Liu Chenhao Pan Duocai Wang Ping Zhang Yaping Fu Hong Zhang haibo su Jun Lu Zhi Zhong Bin Wei West to East Gas Transmission Branch of National Petroleum Pipeline Network Group Shanghai China Central China Branch of National Petroleum Pipeline Network Group Wuhan China Beijing Nayu Tongda Petroleum Technology Company Beijing China School of Earth Resources China University of Geosciences (Wuhan) Wuhan China Reservoir Geology Research Institute Anton Petroleum Technology (Group) Co. Ltd. Chengdu China

Dolomites and eruptive rocks are well-developed in the Permian Fengcheng Formation in Junggar Basin in China, in which oil and gas are accumulated extensively. Until now, high-yield industrial oil and gas flows have been obtained in the dolomitic tuff of the second unit of the Fengcheng Formation, which demonstrates the huge exploration potential of the thick layer of massive dolomitic tuff. The lithology of the second unit of the Fengcheng Formation in this area has gradually transformed from the dolomite, dolomitic tuff to siltstone from east to west. Moreover, the well testing shows that the reservoir is oil-saturated, and the production rate mainly depends on the reservoir’s physical properties and fracture development. In this study, different types of data including core data, well log and seismic data are used cooperatively to characterize the sedimentary, structure and fracture features of the Fengcheng Formation, and then characterize the promising target zone in the study area. The result indicates that hydrocarbons are most accumulated along the deep fault in the Wu-Xia fault zone, which will be the favorable zone for the next progressive exploration.

关键词： Junggar Basin Fengcheng Formation Section II Paragenesis Dolomitic Tuff Fracture

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枯竭气藏型储气库多周期损耗计算方法及其应用

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大庆石油地质与开发 2024年第2期43卷 86-92页

作者：张平黄发木付亚平孙云峰苏海波鲁俊王健杨火海国家石油天然气管网集团有限公司西气东输分公司上海200120 西南石油大学石油与天然气工程学院四川成都610500

地下储气库在生产运行过程中不可避免地会产生天然气损耗。目前对储气库气体损耗的研究仅停留在定性描述阶段,无法满足储气库经济性定量评价的要求。结合清单分析理论和注采机理实验,针对地下储气库注采过程中存在的微渗漏、溶解扩散、... 详细信息

地下储气库在生产运行过程中不可避免地会产生天然气损耗。目前对储气库气体损耗的研究仅停留在定性描述阶段,无法满足储气库经济性定量评价的要求。结合清单分析理论和注采机理实验,针对地下储气库注采过程中存在的微渗漏、溶解扩散、异常漏气和宏观漏气现象,建立了天然气损耗评价数学模型,对地下储气库气体损耗进行定量评价。结果表明:宏观驱替过程中的气体损耗是储气库气体损耗的主要组成部分,随着注采周期的增加而减小;在此基础上,建立了储气库型储气库天然气损耗定量评价方法,并以中原油田某地下储气库天然气损耗计算结果为例,利用该方法核算了该储气库自建库以来的各部分损耗情况并制定了降低损耗的技术对策。依托该计算方法可合理制定降低储气库天然气损耗政策,提供泄漏风险预警,提高储气库经济效益和注采安全性。

关键词：地下储气库天然气损耗宏观驱替注采周期定量评价

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Eutrophication of Jiangsu Coastal Water and Its Role in the Formation of Green Tide

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Journal of Ocean University of China 2024年第1期23卷 109-118页

作者： XIAO Mingyan SONG Weina ZHANG haibo SHI Xiaoyong su Rongguo Key Laboratory of Marine Chemistry Theory and Technology Ministry of EducationOcean University of ChinaQingdao 266100China National Marine Environmental Monitoring Center Dalian 116000China National Marine Hazard Mitigation Service Beijing 100194China

Since 2007,the large-scale green tide caused by Ulva prolifera(U.prolifera)have occurred as a recurrent phenomenon in the southern Yellow Sea of China.Field surveys and satellite remote sensing showed that the small scattered patches of green tide algae were first observed along the Porphyra agriculture area of the subei Shoal in late April.In this study,we attempted to identify the role of eutrophication in the origin of the green tide in the subei Shoal and its adjacent area.subei Shoal and its adjacent area are characterized by rich nutrients,especially NO_(3)^(-)-N,NH_(4)^(+)-N,PO_(4)^(3-)-P,and other bioavailable components(such as urea-N and amino acids).In the spring of 2017,the average concentrations of NO_(3)^(-)-N were 19.01±11.01μmolL^(-1),accounting for 86.68%of the dis-solved inorganic nitrogen(DIN).In addition,the average concentration of NH4^(+)-N was 2.51±1.60μmolL^(-1).PO_(4)^(3-)-P had an average concentration of 0.14±0.13μmolL-1.The average concentrations of urea-N and total hydrolyzed amino acids(THAA)were 1.73±1.36μmolL^(-1)and 1.33±0.80μmolL^(-1),respectively.Rich nutritive substances play a key role in the rapid production of U.prolifera and make the Jiangsu coastal water an incubator for green tide.

关键词： green tide nutrients algae Ulva prolifera eutrophication subei Shoal

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Transient receptor potential vanilloid 1 involved in the analgesic effects of total flavonoids extracted from Longxuejie(Resina Dracaenae Cochinchinensis)

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Journal of Traditional Chinese Medicine 2024年第3期44卷 437-447页

作者： MO Xiaoqiang CHEN Yating YIN Qian CHEN haibo BAN Qiang LI Jun CHEN su YAO Jinguang Department of Stomatology Affiliated Hospital of Youjiang Medical University for Nationalities College of General Practitioners Youjiang Medical University for Nationalities College of Biomedical Engineering South-Central Minzu UniversityKey Laboratory of Cognitive Science of State Ethnic Affairs CommissionHubei Key Laboratory of Medical Information Analysis and Tumor Diagnosis and Treatment College of Pharmacy South-Central Minzu University

OBJECTIVE: To evaluate the analgesic effects of total flavonoids of Longxuejie(Resina Dracaenae Cochinchinensis)(TFDB) and explore the possible analgesic mechanism associated with transient receptor potential vanilloid 1(TRPV1).METHODS: Whole-cell patch clamp technique was used to observe the effects of TFDB on capsaicin-induced TRPV1 currents. Rat experiments in vivo were used to observe the analgesic effects of TFDB. Western blot and immunofluorescence experiments were used to test the change of TRPV1 expression in DRG neurons induced by TFDB.REsuLTS: Results showed that TFDB inhibited capsaicin-induced TRPV1 receptor currents in acutely isolated dorsal root ganglion(DRG) neurons of rats and the half inhibitory concentration was(16.7 ± 1.6) mg/L.TFDB(2-20 mg/kg) showed analgesic activity in the phase Ⅱ of formalin test and(0.02-2 mg per paw)reduced capsaicin-induced licking times of rats. TFDB(20 mg/kg) was fully efficacious on complete Freund's adjuvant(CFA)-induced inflammatory thermal hyperalgesia and capsaicin could weaken the analgesic effects. The level of TRPV1 expressions of DRG neurons was also decreased in TFDB-treated CFA-inflammatory pain rats.CONCLUSION: All these results indicated that the analgesic effect of TFDB may contribute to their modulations on both function and expression of TRPV1 channels in DRG neurons.

关键词： Freund's adjuvant Longxuejie () capsaicin flavonoids formaldehyde inflammatory pain transient receptor potential vanilloid 1

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A Highly Efficient ZrO2 Nanoparticle Based Electrochemical Sensor for the Detection of Organophosphorus Pesticides

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Chinese Journal of Chemistry 2015年第10期33卷 1135-1139页

作者： haibo Wang Yingchun su Hojong Kim Daming Yong Lei Wang Xiaojun Han State Key Laboratory of Urban Water Resource and Environment School of Chemical Engineering and Technology Harbin Institute of Technology Harbin Heilong/iang 150001 China

A sensitive electrochemical method for square-wave voltammetric detection of organophosphate （OP） com- pounds was developed based on zirconia （ZrO2） nanoparticles modified electrode. The electrode was fabricated us- ing electrochemical deposition and characterized by scanning electron microscopy （SEM）, which confirmed the successful formation of nanoparticles. Due to the strong affinity of ZrO2 with the phosphoric group, OPs can strongly bind to the surface of ZrO2 nanoparticles （ZrO2NPs）. Under optimized operational conditions, SWV was employed for Omethoate （a model of OP compounds） detection with 5 min absorption, which showed a wide detec- tion range from 98.5 pmoloL-x to 985 nmol·L^1, with a detection limit as low as 52.5 pmol·L^-1. This electrochemi- cal sensor has good selectivity, stability and reproducibility, and great potential in the detection of OP compounds in agriculture area.

关键词： zirconia nanoparticles organophosphate pesticides Omethoate square wave voltammetry ITO

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随机误差对光伏组件安装设备行星轮系影响机理研究

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太阳能学报 2024年第3期45卷 542-548页

作者：苏祺王海波钱华政西南交通大学机械工程学院成都610031 轨道交通运维技术与装备四川省重点实验室成都610031 通威股份有限公司成都610014

光伏组件安装设备作为新型特种设备,为减小系统振动、保证光伏组件稳定精确安装,针对动力传动系统中行星轮系双功率输入的微调工况,采用集中质量法,考虑时变啮合刚度、齿侧间隙等非线性因素,建立平移-扭转非线性动力学模型,在此基础上... 详细信息

光伏组件安装设备作为新型特种设备,为减小系统振动、保证光伏组件稳定精确安装,针对动力传动系统中行星轮系双功率输入的微调工况,采用集中质量法,考虑时变啮合刚度、齿侧间隙等非线性因素,建立平移-扭转非线性动力学模型,在此基础上研究各轮齿的制造、安装误差对轮系的振动及均载特性影响。研究表明:当存在制造安装误差时,太阳轮浮动可自动定心适应误差影响,在行星架误差下太阳轮偏离理论原点最远;行星轮误差对系统响应影响最为显著,相较于其他部件误差产生的振动位移存在量级差异;所有行星轮均产生相同误差时系统的均载特性优于仅有单一行星轮误差。

关键词：光伏组件误差数学模型行星轮系均载特性

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