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10 kV配网耐张型复合绝缘横担研究综述

华北电力大学学报（自然科学版） 2024年第5期51卷 21-34页

作者：刘云鹏李浩义周松松唐力李乐宗强张配斯河北省绿色高效电工新材料与设备重点实验室(华北电力大学) 河北保定071003 河北省光伏技术省部共建协同创新中心河北保定071003 中国电力科学研究院有限公司北京100192 南方电网科学研究院有限责任公司广东广州510080 南通电力设计院有限公司江苏南通226006 重庆电力设计院有限责任公司重庆401121

复合绝缘横担具有轻质高强、绝缘可靠性高且防雷效果优异等特点,正逐步在10 kV配电线路中得到推广应用。围绕配网耐张型复合绝缘横担结构设计、耐久性研究及性能测试三个问题,首先综述10 kV配网耐张型复合绝缘横担的发展现状,指出研究... 详细信息

复合绝缘横担具有轻质高强、绝缘可靠性高且防雷效果优异等特点,正逐步在10 kV配电线路中得到推广应用。围绕配网耐张型复合绝缘横担结构设计、耐久性研究及性能测试三个问题,首先综述10 kV配网耐张型复合绝缘横担的发展现状,指出研究必要性,进而针对其设计依据、现有设计型式、以疲劳振动老化为代表的耐久性研究进展及关键性能测试与评估展开论述,同时分析目前存在的问题及有待解决的困难,最后结合应用情况进行总结与展望,以期为配网耐张型复合绝缘横担的结构优化、性能提升以及后续大规模应用提供参考。

关键词：复合绝缘横担耐张结构 10 kV配网疲劳振动老化结构设计性能测试

Degradation of Formaldehyde and Benzene by TiO2 Photocatalytic Cement Based Materials

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Journal of Wuhan University of Technology(Materials Science) 2017年第2期32卷 391-396页

作者：刘鹏 YU Xiangwei 王发洲 ZHANG Wenqin YANG Lu liu yunpeng State Key Laboratory of Silicate Materials for Architectures Wuhan University of Technology Wuhan 430070 China School of Chemistry Chemical Engineering and Life Science Wuhan University of Technology Wuhan 430070 China

A novel photocatalytic cement based material was prepared. The distribution of TiO2 on the surface of cement was characterized by scanning electron microscope（SEM） and X-ray diffraction（XRD）, which showed the relationship of photocatalysis and presence of TiO2. TiO2 also had an impact on cement hydration, which was studied by thermal analysis. With 300 W UV illuminations, formaldehyde and benzene were degraded efficiently by the prepared photocatalytic cement based materials. 15wt% TiO2/cement showed the highest degradation efficiency and capability. The results show that formaldehyde and benzene can be degraded within 4 and 9 hours, respectively. Besides, inorganic ions can induce TiO2 agglomeration. As a result, the presence of inorganic ions in cement is unfavorable for degradation. The photocatalytic cement based materials were fabricated and the degradation efficiency of formaldehyde was measured on building roof under sunlight illumination. Formaldehyde in glass chamber can be degraded thoroughly within 10 days.

关键词： photocatalytic cement TiO2 formaldehyde building materials sunlight

Optimization and temperature effects on sandwich betavoltaic microbattery

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Science China(Technological Sciences) 2014年第1期57卷 14-18页

作者： liu yunpeng TANG XiaoBin XU ZhiHeng HONG Liang WANG Peng CHEN Da Department of Nuclear Science and Engineering Nanjing University of Aeronautics and Astronautics

The design scheme of a sandwich-structure betavoltaic microbattery based on silicon using63Ni is presented in this *** structure differs from a monolayer energy conversion *** optimization of various physical parameters and the effects of temperature on the microbattery were studied through *** the proposed optimization design,P-type silicon was used as the substrate for the betavoltaic *** on the proposed theory,a sandwich microbattery with a shallow junction was *** temperature dependence of the device was also *** open-circuit voltaic(Voc)temperature dependence of the optimized sandwich betavoltaic microbattery was ***,the Voc of the betavoltaic microbattery with a high-resistance substrate exponentially decreased over the range of room temperature in the experiment and *** addition,the sandwich betavoltaic microbattery offered higher power than the monolayer betavoltaic *** results of this paper provide a significant technical reference for optimizing the design and studying temperature effects on betavoltaics of the same type.

关键词： sandwich betavoltaic microbattery temperature effects optimization

18-Position Calibration Algorithm for SINS

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18-Position Calibration Algorithm for SINS

以时间节点为导向的质控方案在急性缺血性脑卒中取栓绿色通道的应用及效果评价

第36届中国控制会议

作者： Fei Luo Ling Li yunpeng liu Cong Xu Beijing Aerospace Automatic Control Institute

ISBN: (纸本)9781538629185

Aiming at getting rid of the dependence of high precision external attitude reference,this paper presents a 18-position calibration *** method takes the accelerometer output as observation,adopting reasonable transposition arrangement to fully motivate the relation between the observation quantity and the inertial instrument error,using the least squares method complete identification of the ***,as the error is increased when position departure increasing,an iterative solution method is taken to restrain the influence of the error brought by the *** algorithm is simple in principle,easy to realize,and has high calibration *** can be used to calibrate all the 21 error parameters of the inertial instruments without high-precision test *** mathematical simulation and the experiment have proved it meets requirements of navigation with high practical value in engineering.

关键词： SINS systematic calibration rotation scheme iterative solution the least squares method

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中国病案 2024年第8期25卷 97-100页

作者：张伟黄菊梅柳云鹏郭鹏汪阳首都医科大学附属北京朝阳医院神经外科北京市100020

目的通过以时间节点为导向制定针对急性缺血性脑卒中取栓绿色通道相关的质控方案,并在临床中应用,评价其对取栓绿色通道工作效率、取栓患者预后的影响。方法选取2021年1月1日—2022年12月31日在某院接受取栓治疗的急性缺血性脑卒中患者... 详细信息

目的通过以时间节点为导向制定针对急性缺血性脑卒中取栓绿色通道相关的质控方案,并在临床中应用,评价其对取栓绿色通道工作效率、取栓患者预后的影响。方法选取2021年1月1日—2022年12月31日在某院接受取栓治疗的急性缺血性脑卒中患者154例,其中2021年1月1日-2021年12月31日使用原有绿色通道质控方案的患者82例设为对照组,2022年1月1日-2022年12月31日使用以时间节点为导向的质控方案的患者72例,设为观察组。比较两组患者到院至股动脉穿刺成功时间、绿色通道流程其它关键时间节点用时及术后90天mRS评分。结果观察组患者到院至股动脉穿刺成功时间(94.9±27.6)分钟显著低于对照组(114.6±36.7)分钟,CT检查完成至进入导管室时间(47.3±20.3)分钟显著短于对照组(63.3±34.6)分钟,医师接诊至CT检查开始时间(18.2±6.9)分钟显著短于对照组(22.3±10.4)分钟、术后90天mRS评分(2.2±2.1)显著小于对照组(3.0±2.4)。结论使用以时间节点为导向的质控方案,可降低急性缺血性脑卒中取栓患者的到院至股动脉穿刺成功时间及部分时间节点用时,降低术后90天mRS评分,改善患者的预后,提高生活质量。

关键词：急性缺血性脑卒中取栓时间节点质控

Research on automatic location and recognition of insulators in substation based on YOLOv3

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High Voltage 2020年第1期5卷 62-68页

作者： yunpeng liu Xinxin Ji Shaotong Pei Ziru Ma Gonghao Zhang Ying Lin Yufeng Chen Hebei Provincial Key Laboratory of Power Transmission Equipment Security Defense North China Electric Power UniversityYonghua North Street 619Baoding CityPeople's Republic of China State Grid Corp of China Shandong Electric Power Research Institute No.1 South Second Ring RoadCity DistrictJinanPeople's Republic of China

With the development of a smart grid,the automatic location of power equipment is becoming a *** this study,a method for automatic location identification and diagnosis of external power insulation equipment based on YOLOv3 is *** deep learning algorithm is used to extract the characteristics of image data under the visible light channel of the *** learns and trains the collected data to realise the rapid location identification and frame selection of the external insulation equipment and extract discharge characteristics of the target box under the ultraviolet *** to the number of photons and the spot area information,the operating status of the equipment is *** results show that the YOLOv3 algorithm with a training rate of 0.005 achieved a fast convergence of the location recognition *** average recognition accuracy was 88.7%and the average detection time was 0.0182 *** combination of visible light path insulator target recognition and ultraviolet light path diagnosis can realise a lean and intelligent diagnosis of power *** method had good real-time performance,accuracy,and robustness to the *** provides a new concept for intelligent diagnosis and location analysis of power equipment.

关键词： diagnosis insulator insulation

Energy budget of cold and hot gas-solid fluidized beds through CFD-DEM simulations

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Particuology 2024年第6期89卷 153-171页

作者： Lei Bi yunpeng Jiao Chunjiang liu Jianhua Chen Wei Ge School of Chemical Engineering and Technology Tianjin UniversityTianjin 300072China State Key Laboratory of Multiphase Complex Systems Institute of Process EngineeringChinese Academy of SciencesBeijing100190China School of Chemical Engineering University of Chinese Academy of SciencesBeijing 100049China

Direct energy budget is carried out for both cold and hot flow in gas–solid fluidization ***,the energy paths are proposed from thermodynamic *** consumption means total power input to the specific system,and it can be decomposed into energy retention and energy *** retention is the variation of accumulated mechanical energy in the system,and energy dissipation is the energy converted to heat by irreversible *** based on the Computational Fluid Dynamics-Discrete Element Method(CFD-DEM)framework,different energy terms are quantified from the specific flow elements of fluid cells and particles as well as their interactions with the *** order to clarify the energy budget,it is important to identify which system is studied:the particle-fluid system or the particle *** the cold flow,the total energy consumption of the particle sub-system can well indicate the onset of bubbling and turbulent,while the variation of local energy consumption terms can reflect the evolution of heterogeneous *** the hot flow,different heat transfer mechanisms are analyzed and the solver is modified to reproduce the experimental *** impact of the heat transfer mechanisms and heat production on energy consumption is also *** proposed budget method has proven to be energy-conservative and easy to conduct,and it is hopeful to be applied to other multiphase flow systems.

关键词： Energy budget Gas-solid fluidization CFD-DEM Regime transition Heat transfer mechanism

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曾家沟泥石流特征分析及危害程度评价

水电站设计 2024年第2期40卷 1-9,20页

作者：刘云鹏钟果肖华波田雄刘永波袁琼中国电建集团成都勘测设计研究院有限公司四川成都610072

中国川西中高山地貌区受到构造侵蚀剥蚀影响,河流两岸支沟发育、地形切割深度大,多发育有沟谷型泥石流沟,对水电工程建设方案选择及枢纽工程布置等影响较大。以大渡河中游拟建老鹰岩一级水电站坝址区右岸的曾家沟泥石流为例,在对其主要... 详细信息

中国川西中高山地貌区受到构造侵蚀剥蚀影响,河流两岸支沟发育、地形切割深度大,多发育有沟谷型泥石流沟,对水电工程建设方案选择及枢纽工程布置等影响较大。以大渡河中游拟建老鹰岩一级水电站坝址区右岸的曾家沟泥石流为例,在对其主要发育特征进行调查的基础上,计算分析了其运动特征和动力特性,并对其发育程度及危害程度进行了量化评价,提出了泥石流防治的工程治理方案及监测与预警思路,对类似工程坝址坝线选择中泥石流影响分析及防治设计具有重要借鉴意义。

关键词：水电工程沟谷型泥石流发育特征危害程度防治设计

DIC方法测量高温后轻骨料混凝土弹性模量应用研究

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交通工程 2024年第3期24卷 119-123页

作者：郭佳栋宋晓磊焦晓磊刘云鹏天津市交通科学研究院天津300000 天津市公路事业发展服务中心天津300000 北京科技大学北京100083

应用数字图像相关方法(DIC)测量轻骨料混凝土的弹性模量,同电阻应变片测量方法进行对比分析,研究DIC方法应用于测量混凝土弹性模量中的可行性,应用DIC方法研究不同纤维掺量及高温作用对玄武岩纤维轻骨料混凝土弹性模量的影响.结果表明:... 详细信息

应用数字图像相关方法(DIC)测量轻骨料混凝土的弹性模量,同电阻应变片测量方法进行对比分析,研究DIC方法应用于测量混凝土弹性模量中的可行性,应用DIC方法研究不同纤维掺量及高温作用对玄武岩纤维轻骨料混凝土弹性模量的影响.结果表明:应用DIC方法测量轻骨料混凝土应力-应变曲线线性较好,且与电阻应变片测得结果相差不大,可应用于混凝土静力受压弹性模量试验.轻骨料混凝土中掺入玄武岩纤维可提高其弹性模量,且随纤维体积掺量的增加呈先增后减的变化趋势,体积掺量0.2%时弹性模量最大.随着温度的升高,弹性模量总体下降,温度不超过300℃时,玄武岩纤维性能未发生明显衰减,仍可增加轻骨料混凝土的弹性模量.

关键词：数字图像相关方法弹性模量轻骨料混凝土高温