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14th International Conference on Computer and Electrical engineering, ICCEE 2021

作者： Yang, Xinyuan Zhang, Meng Zhao, Lu Ouyang, Litao Wu, Yaowu Hubei Electric Power Survey and Design Institute Hubei Wuhan430040 China State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and Technology Hubei Wuhan430074 China

In the future power system, the uncertainty of the load side will increase, and the planning of various demand resources in the system will affect the flexibility and economy of the power system. Excessive planning capacity of demand response resources will cause excessive investment, and insufficient planned capacity will affect the flexibility of the system. In order to obtain the investment decision plan for new demand-side resources within the planning period, this article adds demand resources such as energy storage systems and controllable loads based on thermal power units as the main flexible resources, establish an optimization model with the goal of minimizing the annual cost of the power system expansion plan. Based on the improved IEEE-RTS96 system, a numerical example is analysed, and the influence of different demand-side response resources on system planning is deeply explored. The results show that comprehensive planning of multiple types of demand-side response resources is more competitive than single resource planning in terms of system economy and operational flexibility. © Published under licence by IOP Publishing Ltd.

关键词： Investments

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200-krad/s Polarization Tracking Using Thin Film Lithium Niobate Integrated Dynamic Polarization Controller

200-krad/s Polarization Tracking Using Thin Film Lithium Nio...

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OptoElectronics and Communications Conference, OECC

作者： Junjiang Ye Youxin Liu Weibin Chen Ao Cui Kaixuan Chen Changjian Guo Liu Liu Guangdong Provincial Key Laboratory of Optical Information Materials and Technology South China Academy of Advanced Optoelectronics South China Normal University Guangzhou China State Key Laboratory for Modern Optical Instrumentation College of Optical Science and Engineering Centre for Optical & Electromagnetic Research International Research Center for Advanced Photonics Zhejiang University Hangzhou China

ISBN: (数字)9798350308396

ISBN: (纸本)9798350308402

We demonstrate a thin-film lithium niobate (TFLN) integrated dynamic polarization controller (DPC) driven by an adaptive gradient descent algorithm for fast polarization tracking. Experimental results show that the TFLN-based DPC exhibits a fast response time of 530-ps, and achieves a polarization tracking speed of up to 200-krad/s when targeting a specific linear state of polarization (SOP).

关键词： Target tracking Heuristic algorithms Lithium niobate Process control Production Delays Time factors

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Analysis of variable-speed units for hydropower station to integrate renewable power 4

Analysis of variable-speed units for hydropower station to i...

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4th IEEE China International Electrical and Energy Conference, CIEEC 2021

作者： Xin, Chen Fei, Xiong Yangbo, Kou Zhiwei, Zhang Changjiang Water Resources Commission Huazhong University of Science Technology State Key Laboratory of Advanced Electromagnetic Engineering and Technology Wuhan430074 China Ohio State University Department of Electrical and Computer Engineering ColumbusOH43210 United States

ISBN: (纸本)9781728171494

The consumption and abandonment problem has become an inescapable issue for the development of renewable energy industry. It's generally recognized that multi-energy complementary technology and energy storage technology are the noteworthy methods. The main purpose of this paper is to provide an analysis of using variable-speed generation units to improve the wind-solar-water complementary capability of hydropower stations, which combines the characteristics of the hydro-mechanical-electric system of a hydropower station with the advantages of variable-speed units, and it promised to expand the functions of hydropower stations and make the profit channels of hydropower stations more diversified. In order to realize the method, a complete mathematical description of variable-speed hydropower system was given, then it was verified with random fluctuations of wind power and photovoltaic power. © 2021 IEEE.

关键词： Wind power

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AC Loss Evaluation of a Toroidal D-Shaped 10 MJ Superconducting Magnet

AC Loss Evaluation of a Toroidal D-Shaped 10 MJ Superconduct...

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International Conference on Applied Superconductivity and electromagnetic Devices, ASEMD

作者： Li Li Meng Song Feiyang Long Ying Xu Li Ren Joint Laboratory on Power Superconducting Technology China Southern Power Grid Company Ltd Guangzhou China State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and Technology Wuhan China School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan China

A 10 MJ HTS SMES designed for power system voltage compensation and active-reactive power regulation applications is under construction. The system aims to complete 10MJ charging or discharging in 2s time, so it is crucial to analyze its AC losses. In this paper, the AC loss of the magnet is analyzed by the dimensional reduction inversion method, and the AC loss of the magnet for one complete working cycle is obtained to be about 72 KJ, which provides a reference for the design of the cooling system of SMES.

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Nonvolatile bistable planar Hall effects in a natural two-dimensional metal–antiferromagnet heterostructure

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Physical Review B 2025年第15期111卷 155437-155437页

作者： Minjie Zhang Xinxi Liu Yuqiang Huang Qifeng Hu Jiayi Lu Hui Xing Dawei Shen Bin Lu Yunhao Lu Kenji Watanabe Takashi Taniguchi Guang-Han Cao Yi Zheng School of Physics and State Key Laboratory of Silicon and Advanced Semiconductor Materials Zhejiang University Hangzhou 310027 China Key Laboratory of Artificial Structures and Quantum Control and Shanghai Center for Complex Physics School of Physics and Astronomy Shanghai Jiao Tong University Shanghai China National Synchrotron Radiation Laboratory University of Science and Technology of China Hefei 230029 China State Key Laboratory of Silicon and Advanced Semiconductor Materials School of Materials Science and Engineering Zhejiang University Hangzhou 310027 China Research Center for Materials Nanoarchitectonics National Institute for Materials Science 1-1 Namiki Tsukuba 305-0044 Japan

Antiferromagnetic materials with van der Waals (vdW) layered structures hold great promises for developing the next generation of electronic and optoelectronic devices, providing unique combinations of terahertz spin dynamics, ultrastability against magnetic fields disturbance, and low power consumption. Here, we demonstrate unconventional nonvolatile bistable planar Hall effect (PHE) in few-layer GdTe3, a natural vdW heterostructure consisting of metallic Te layers and antiferromagnetic (AFM) GdTe bilayers. By fully unfolding the magnetic phase diagram of few-layer GdTe3 utilizing temperature- and angle-dependent magnetotransport measurements, we identify that the nonvolatile switching of bistable PHE states is rooted in the fourfold Néel vector flipping between two perpendicular in-plane magnetocrystalline anisotropy axes, each flipping reverses the signs of the PHE state. The efficient magnetic field (H) write-in and zero-field read out of the PHE memory pave the way for 2D AFM-based spintronics such as nonvolatile information storage and logic operations.

关键词： Antiferromagnetic materials

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Effect of organic binders on the activation and properties of indurated magnetite pellets

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International Journal of Minerals,Metallurgy and Materials 2021年第7期28卷 1145-1152页

作者： Cui Wang Chen-yang Xu Zheng-jian Liu Yao-zu Wang Rong-rong Wang Li-ming Ma State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China Department of Ferrous Metallurgy RWTH Aachen UniversityIntzestraße 152072 AachenGermany

In the ironmaking process,the addition of an organic binder to replace a portion of bentonite has the potential to improve the per-formance of *** interaction between original bentonite(OB)and organic binder was *** indicated that the micromor-phology of organic composite bentonite(OCB)became porous and the infrared difference spectrum exhibited a curved *** addition,the residual burning rates of OB and organic binder were determined to be 82.72%and 2.30%,***,the influence of OCB on the properties of pellets was *** compressive strength of OCB-added green pellets(14.7 N per pellet)was better than that of OB-ad-ded pellets(10.3 N per pellet).Moreover,the range of melting temperature of OCB-added green pellets(173℃)was narrower than that of OB-added pellets(198℃).The compressive strength of OCB-added green pellets increased from 2156 to 3156 N per pellet with the increase in roasting temperature from 1200 to 1250℃.

关键词： pellets organic composite bentonite softening-melting property interaction behavior

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Optimization Operation Model of Integrated Energy System in Expressway Service Area with P2G

Optimization Operation Model of Integrated Energy System in ...

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IEEE International Conference on Power and Power and Renewable Energy (ICPRE)

作者： Xiaojuan Yang Suhua Lou Yuanyuan Zhao Chongtao Bai Ting Huang State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan China School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan China State Grid Fujian Electric Power Research Institute Fuzhou China

Under the background of carbon peaking, carbon neutrality and integrated development of transportation and energy, and in view of the current situation of high emission and high energy consumption in expressway service area (ESA), an optimization operation model of integrated energy system (IES) including gas turbine, wind, photovoltaic, energy storage system and hydrogen is established with the lowest system operation cost and energy purchase cost as the objective function, which introduces power to gas and fuel cell to achieve bidirectional coupling of electricity and hydrogen. Then this paper takes a large expressway service area in the northwest of China as an example and sets different scenarios for example analysis. The simulation results show that the total operation cost of the system is greatly reduced and the utilization rate of renewable energy is effectively increased, which indicate that the proposed model can improve the system operation economy, green and low carbon development, and diverse interactivity while meeting the energy requirements of electricity and hydrogen in expressway service area. It has significant application value in promoting sustainable development in the fields of transportation, energy and power.

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Study on Performance Modification of Insulation Wraps for Power Transmission Line Corona Noise Prevention

Study on Performance Modification of Insulation Wraps for Po...

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2021 International Conference on Intelligent Computing, Automation and Systems, ICICAS 2021

作者： Yiyi, Liu Wei, Chen Dan, Lu Junjie, Wu Wei, Qi State Grid Hunan Electric Power Corporation Research Institute State Grid Laboratory of Electric Equipment Noise and Vibration Research Changsha China Huazhong University of Science and Technology State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering Wuhan China

ISBN: (纸本)9781665428101

Study and prevention of transmission line corona noise has become an important means to effectively promote the environmental friendliness and energy saving of transmission line. Studies have shown that using hydrophilic coating treatment on the conductor surface, so that under the condition of precipitation, the rainwater can be evenly distributed on the conductor surface to reduce the formation density of water droplets, which can weaken the impact of raindrops on the curvature radius of the conductor. As a result, less distorted electric field and soft noise were produced, leading to reduce corona noise ultimately. The greater hydrophilicity of the conductor surface, the more significant the reduction of corona noise is. In this paper, experiments have validated that the modification of nano aluminum oxide by electron beam radiation graft technology can improve its surface reactivity, promote its dispersion and bonding ability in RTV rubber matrix, and then elevate the hydrophobicity, mechanical properties and aging resistance of modified RTV silicone rubber. In addition, specific properties of thermal conductivity and hydrophobicity can be improved by further adding functional monomers. © 2021 IEEE.

关键词： Electric lines

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Facile Synthesis of a Novel Spinel Ni2vo4/Acetylene Black Composite as an Excellent Negative Material for Lithium-Ion Batteries

SSRN

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SSRN 2023年

作者： Zhang, Dan Zhang, Chunyan Shi, Xinyu Xu, Huishi Luo, Baomin Liu, Xiaodi Liu, Guangyin Li, Liping Yu, Chuang College of Chemistry and Pharmaceutical Engineering Nanyang Normal University Nanyang473061 China State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of Chemistry Jilin University Changchun130012 China State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering Huazhong University of Science and Technology Hubei Wuhan430074 China

Spinel nickel vanadate has not been synthesized and applied to anode for lithium-ion batteries on account of the missing synthetic route. In the study, a simple route is created to obtain a new spinel Ni2VO4/acetylene black composite. The obtained Ni2VO4 nanoparticles are ultrasmall and anchored on acetylene black, which could markedly mitigate the volume alteration and elevate electrochemical reaction kinetics. For this reason, a large reversible capacity of 511 mAh g-1 was maintained at 350th cycle under 1 A g-1. © 2023, The Authors. All rights reserved.

关键词： Anodes

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Towards advanced divertor configurations on the J-TEXT tokamak

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Plasma Science and technology 2022年第12期24卷 233-250页

作者： Yunfeng LIANG Zhipeng CHEN Nengchao WANG Zhifeng CHENG Alexander KNIEPS Song ZHOU Bo RAO Shuai XU Philipp DREWS Xiaolong ZHANG Hao WANG Zhaosu WANG Jie YANG Xin XU Jiankun HUA Qinghu YANG Wei YAN Cunkai LI Yutong YANG Shuhao LI Shaocheng LIU Lin NIE Ting LONG Liang LIAO Fuqiong WANG Yasuhiro SUZUKI the J-TEXT Team International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics State Key Laboratory of Advanced Electromagnetic Engineering and TechnologySchool of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074People's Republic of China Forschungszentrum Jülich GmbH Institut für Energie-und Klimaforschung-PlasmaphysikPartner of the Trilateral Euregio Cluster(TEC)Jülich 52425Germany Institute of Plasma Physics Chinese Academy of SciencesHefei 230031People's Republic of China Southwestern Institute of Physics Chengdu 610041People's Republic of China Department of Applied Physics College of ScienceDonghua UniversityShanghai 201620People's Republic of China Graduate School of Advanced Science and Engineering Hiroshima UniversityHigashi-Hiroshima 739-8527Japan

Developing advanced magnetic divertor configurations to address the coupling of heat and particle exhaust with impurity control is one of the major challenges currently constraining the further development of fusion *** has therefore become the focus of extensive attention in recent *** J-TEXT,several new divertor configurations,including the high-field-side single-null poloidal divertor and the island divertor,as well as their associated fundamental edge divertor plasma physics,have recently been *** purpose of this paper is to briefly summarize the latest progress and achievements in this relevant research field on J-TEXT from the past few years.

关键词： divertor tokamak magnetically confined fusion

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