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微电网风光储容量优化配置

云南电力技术 2024年第4期52卷 19-24页

作者：谢菁吴政声万航羽支刚中国能源建设集团云南省电力设计院有限公司云南昆明650011

与光伏或风能独立供电系统相比,风光互补系统能更好适应环境变化,再具有储能调节功能,风能、太阳能和电池微电网可更好利用清洁能源,满足系统用电需求。本文研究了含风光储微电网风光组件和蓄电池的最佳容量配置,将微电网的供电可靠性... 详细信息

与光伏或风能独立供电系统相比,风光互补系统能更好适应环境变化,再具有储能调节功能,风能、太阳能和电池微电网可更好利用清洁能源,满足系统用电需求。本文研究了含风光储微电网风光组件和蓄电池的最佳容量配置,将微电网的供电可靠性、供需平衡和蓄电池荷电状态作为约束条件,以电网运行成本为最小目标函数,提出了基于北方苍鹰算法来求解模型。通过算例分析,场景3为算例微电网的最优容量配置方案,其运行成本比场景1、2分别下降12.48%、4.07%,验证了所提模型的有效性,具有工程应用价值。

关键词：微电网系统风光互补北方苍鹰优化(NGO) 容量配置电池荷电状态(SOC)

GIS与GIL电气设备伸缩节在线监测技术研究

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电力设备管理 2024年第13期 264-266页

作者：杨正盛林楚乔张恒源马龙华国网吉林省电力有限公司国网吉林省电力有限公司超高压公司南京优能特电力科技发展有限公司

本文旨在研究GIS与GIL电气设备伸缩节在线监测技术,以实现对伸缩节状态的实时监测和故障预警。通过采用先进的传感器技术、数据采集与处理方法,以及结合GIS和GIL设备特点的监测算法,本文提供了一种高效、准确的在线监测解决方案。通过... 详细信息

本文旨在研究GIS与GIL电气设备伸缩节在线监测技术,以实现对伸缩节状态的实时监测和故障预警。通过采用先进的传感器技术、数据采集与处理方法,以及结合GIS和GIL设备特点的监测算法,本文提供了一种高效、准确的在线监测解决方案。通过该技术的应用,可以实时获取伸缩节的状态信息,及时发现潜在问题,并采取相应的维护和修复措施,从而提高设备的可靠性和运行效率。

关键词： GIS(气体绝缘开关) 数据采集与处理 GIL(气体绝缘输电线路) 设备状态监测

Motion simulation and test on threshed grains in tapered threshing and transmission device for plot wheat breeding based on CFD-DEM

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International Journal of Agricultural and Biological Engineering 2019年第1期12卷 66-73页

作者： Fei Dai Xuefeng Song Wuyun Zhao zhengsheng Han Fengwei Zhang Shilin Zhang College of Mechanical and Electrical Engineering Gansu Agricultural UniversityLanzhou 730070China

Mechanization of field experiments is the only way to improve crop breeding and seed propagation *** order to further clarify and improve the working performance of tapered threshing device for plot breeding,and reduce the remaining seeds in the device,the numerical simulation was carried out on the motion process of materials in the longitudinal-axial tapered cylinder threshing and transmission device of the plot wheat breeding combine harvester based on CFD-DEM *** results showed that,threshing and transmission of particles and short stalks at axial direction could be realized under the influence of air ***,the material transference and distribution rule and stream field distribution rule of air flow in the threshing and transmission device were obtained,the variations of velocity and displacement of particles and short stalks with time were obtained;the motion trajectories and forms of particles in different types of retention were also *** rotating speed of 1300-1600 r/min for the tapered threshing cylinder in the verification test,the particle retention rate in the enclosure was 0-0.13%,while in the simulation the particle retention rate in the enclosure was 0-0.11%,only a 0.02%difference between *** results proved a favorable feasibility to simulate the working performance of the tapered threshing and transmission device for plot breeding through gas-solid coupling method.

关键词： particle threshing and transmission tapered threshing and transmission device hydromechanics calculation discrete element numerical simulation test

Why does a high-fat diet induce preeclampsia-like symptoms in pregnant rats?

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Neural Regeneration Research 2013年第20期8卷 1872-1880页

作者： Jing Ge Jun Wang Dan Xue zhengsheng Zhu Zhenyu Chen Xiaoqiu Li Dongfeng Su Juan Du Department of Gynecology and Obstetrics Shengjing Hospital of China Medical University The General Hospital of Shenyang Military Region Department of Gynecology and Obstetrics People's Liberation Army No.202 Hosiptal Dantu District Sanitary Supervision Institute Department of Neurology the 463 Hospital of Chinese PLA

Changes in neurotransmitter levels in the brain play an important role in epilepsy-like attacks after pregnancy-induced preeclampsia-eclampsia. Metabotropic glutamate receptor 1 participates in the onset of lipid metabolism disorder-induced preeclampsia. Pregnant rats were fed with a high-fat diet for 20 days. Thus, these pregnant rats experienced preeclampsia-like syndromes such as hyper-tension and proteinuria. Simultaneously, metabotropic glutamate receptor 1 mRNA and protein ex-pressions were upregulated in the rat hippocampus. These findings indicate that increased expres-sion of metabotropic glutamate receptor 1 promotes the occurrence of high-fat diet-induced pree-clampsia in pregnant rats.

关键词： neural regeneration preeclampsia eclampsia excitatory neurotransmitter neurotoxicity hyperlip-idemia hypertension pregnancy lipoprotein-associated phospholipase A2 metabotropic glutamate receptor 1 grants-supported paper neuroregeneration

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继电保护智能化与自动化融合的分析

电子技术（上海） 2024年第3期53卷 242-243页

作者：汤瑞秦正升罗明飞孙遥秦汝松云南电网有限责任公司普洱供电局云南665000

阐述智能化继电保护与电力系统自动化融合的方法与关键技术,通过与通信技术、数据处理技术、人机界面技术的融合,实现智能化保护装置在电力系统自动化中的应用,通过案例验证其有效性。

关键词：智能化继电保护电力系统自动化数据处理

Influence of back-gate stress on the back-gate threshold voltage of a LOCOS-isolated SOI MOSFET

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Journal of Semiconductors 2012年第2期33卷 36-40页

作者： Mei Bo Bi Jinshun Li Duoli Liu Sinan Han zhengsheng Institute of Microelectronics Chinese Academy of SciencesBeijing 100029China

The performance of a LOCOS-isolated SOI MOSFET heavily depends on its back-gate characteristic, which can be affected by back-gate stress.A large voltage stress was applied to the back gate of SOI devices for at least 30 s at room temperature,which could effectively modify the back-gate threshold voltage of these devices. This modification is stable and time *** order to improve the back-gate threshold voltage,positive substrate bias was applied to NMOS devices and negative substrate bias was applied to PMOS *** results suggest that there is a leakage path between source and drain along the silicon island edge,and the application of large backgate bias with the source,drain and gate grounded can strongly affect this leakage *** we draw the conclusion that the back-gate threshold voltage,which is directly related to the leakage current,can be influenced by back-gate stress.

关键词： back-gate threshold voltage stress silicon-on-insulator

Crystal Structure of Natural Non-metamict Ti- and Fe2+-rich Chevkinite-（Ce）

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Acta Geologica Sinica(English Edition) 2005年第3期 325-331页

作者： LI Guowu1,YANG Guangming2,MA zhengsheng1,SHI Nicheng1,XIONG Ming1,FAN Haifu3 and SHENG Ganfu4 1 China University of Geosciences(Beijing),Beijing 100083 2 China University of Geosciences(Wuhan),Wuhan,hubei 430074 3 Institute of Physics,Chinese Academy of Sciences,Beijing 100080 4 Chengdu Institute of Geology and Mineral Resources,Chengdu,Sichuan 610082

The crystal structure of non-metamict Ti- and Fe2+-rich chevkinite-(Ce) has been redetermined with the single -crystal sample collected from Bayan Obo, Inner Mongolia, China. The chemical formula of the sample is Ce4Fe2Ti3Si4O22. The crystals are monoclinic with the unit cell parameters a = 13.4656(15) ?, b = 5.7356(6) ?, c = 11.0977(12) ?, β= 100.636(2)o, V = 842.39 (16) ?3 and Z = 2. The structures of Ti- and Fe2+-rich chevkinite-(Ce) were refined with space groups P21/a and C2/m. Least-squares refinement results show that both structural models of Ti- and Fe2+-rich chevkinite-(Ce) are very good, R[F2>2σ(F2)] =0.027 with P21/a and R[F2>2σ(F2)] =0.021 with C2/m. In order to illustrate the relationship between the two space groups P21/a and C2/m, the distribution of diffraction intensities was inspected. Pseudo extinction was found, i.e., reflections with h+k=2n are systematically strong, while those with h+k=2n+1 are weak. By neglecting the systematically weak (h+k=2n+1) reflections the space group becomes C2/m. There is a mirror plane in the C2/m perpendicular to the b axis. However, oxygen atoms in the P21/a model are of a symmetrical relationship with the corresponding pseudo mirror plane. It is concluded that the crystal structure of non-metamict Ti- and Fe2+-rich chevkinite-(Ce) is a superstructure with the space group of P21/a, which is of pseudo symmetry corresponding to the space group C2/m.

关键词： non-metamict Ti- and Fe2+-rich chevkinite-(Ce) crystal structure space group superstructure

终末期肝病食谱APP改善肝硬化患者并发营养不良及衰弱的研究

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胃肠病学和肝病学杂志 2024年第3期33卷 265-271页

作者：杨萍王晶宁会赵雅娟邹正升内蒙古科技大学包头医学院第二附属医院消化科内蒙古包头014000 中国人民解放军总医院第五医学中心非感染性肝病诊疗与研究中心

目的探讨终末期肝病食谱应用程序(end-stage liver disease recipe application,ESLDR APP)对肝硬化患者并发营养不良及衰弱的治疗效果。方法选取2022年3月至2022年8月在内蒙古科技大学包头医学院第二附属医院住院的60例肝硬化并发营养... 详细信息

目的探讨终末期肝病食谱应用程序(end-stage liver disease recipe application,ESLDR APP)对肝硬化患者并发营养不良及衰弱的治疗效果。方法选取2022年3月至2022年8月在内蒙古科技大学包头医学院第二附属医院住院的60例肝硬化并发营养不良及衰弱患者,通过ESLDR APP为上述患者提供3个周期的治疗(每30 d为1个治疗周期),于每个周期结束到院复查,以排除依从性较差的患者,并检查有无食物过敏或出现其他并发症。比较患者使用ESLDR APP治疗3个周期前后的BMI、上臂围(arm circumference,AC)、三头肌皮褶厚度(triceps skin-fold thickness,TSF)及上臂肌围(arm muscle circumference,AMC)的差异,总蛋白、白蛋白、胆碱酯酶及胆汁酸的差异,优势手握力的差异,衰弱表型评估(frailty phenotype,FP)结果的差异。并于3个治疗周期结束后通过调查问卷的形式收集上述患者对ESLDR APP的评价。结果最终共入组53例患者,男28例,女25例。患者使用ESLDR APP治疗3个周期前后BMI、AC、TSF、AMC、总蛋白、白蛋白及胆碱酯酶水平均显著升高,胆汁酸水平、FP结果显著降低,差异均有统计学意义(P均0.05);说明达到了一定程度的干预效果。通过调查问卷方式收集53例肝硬化患者对ESLDR APP的评价,37例(69.81%)认为本APP对改善营养不良及衰弱非常有效;10例(18.87%)认为一般有效;6例(11.32%)认为无效。结论ESLDR APP通过为患者制定科学营养的食谱,达到了改善肝硬化并发营养不良及衰弱的目的,提升了蛋白水平及营养状况,使患者受益。

关键词：肝硬化营养不良衰弱

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基于调频备用容量约束的储能规划方法

云南电力技术 2024年第4期52卷 6-9页

作者：李俊杰支刚万航羽吴政声中国能源建设集团云南省电力设计院有限公司云南昆明650051

建设新型电力系统是构建新型能源体系的重要任务,而随着新能源大规模并网将导致电力系统频率响应能力下降,灵活性条件资源不足。以电化学为主的新型储能作为优质的灵活性调节资源,有望在电力系统动态频率支撑中发挥重要作用。本文从电... 详细信息

建设新型电力系统是构建新型能源体系的重要任务,而随着新能源大规模并网将导致电力系统频率响应能力下降,灵活性条件资源不足。以电化学为主的新型储能作为优质的灵活性调节资源,有望在电力系统动态频率支撑中发挥重要作用。本文从电力系统备用容量管理及实际电网一次调频需求角度出发,提出了一种基于调频备用容量约束的储能规划方法,并通过算例进行了验证,可作为省级储能规划的参考。

关键词：新能源新型电力系统储能电力系统一次调频