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International Conference on Computer Engineering and Applications (ICCEA)

作者： Bo Li Ruifeng Zhao Jiangang Lu Kuo Xin Jinhua Huang Guanqiang Lin Jinrong Chen Xueyue Pang Shunxin Wu Electric Power Dispatching and Control Center of Guangdong Power Grid Co. Ltd. Guangzhou Guangdong China Electric Power Dispatching and Control Center of China Southern Power Grid Co. Ltd. Guangzhou Guangdong China Electric Power Research Institute of Guangdong Power Grid Co. Ltd. Guangzhou Guangdong China Huizhou Power Supply Bureau of Guangdong Power Grid Co. Ltd. Huizhou Guangdong China Foshan Power Supply Bureau of Guangdong Power Grid Co. Ltd. Foshan Guangdong China China Energy Engineering Group Guangdong Electric Power Design Institute Co. Ltd. Guangzhou Guangdong China State Key Laboratory of Power Equipment & System Security and New Technology School of Electrical Engineering Chongqing University Chongqing China

Large amount of power load data with high-sampling rate plays a crucial role in the training of time-dense power load forecasting network. However, in many cases, there is a large amount of data with low-sampling rate, which can't directly train a time-dense forecasting network. Therefore, this paper proposes a deep learning based dataset interpolation method, which uses the available high-sampling rate power load datasets to train a dataset interpolation network, then interpolates the low--sampling rate datasets with trained network to obtain high-sampling rate datasets, and finally uses the interpolated datasets for time-dense forecasting network training. The results show that the data obtained based on the method proposed in this paper fits the ground-truth closer than the traditional interpolation, and the results of the network trained based on this dataset are more accurate in the subsequent forecasting tasks.

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The Power Control Method of Data Center Based on Cloud- Edge Collaboration

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Journal of Physics: Conference Series 2021年第1期1754卷

作者： Junjie Zhao Yucheng Hou Liu Liu Feng Xie Xiang Mao Pan Luo Jinxin Wang Zhiqiang Zhang Jiang Deng Science and Technology on Reactor System Design Technology Laboratory Nuclear Power Institute of China Chengdu 610213 China Key Laboratory of the Ministry of Education on Smart Power Grids (Tianjin University) Tianjin 300072 China

Data centers have the characteristics of huge energy consumption and strong power fluctuations. To solve the problem of unstable supply and demand such as frequent power fluctuations in the micro-grid of the data center using renewable energies, this paper establishes a controllable load model of server clusters based on the task migration mechanism by analyzing the various tasks and characteristics of large cloud data centers, as well as edge computing nodes. Through the collaborative optimization control of edge and cloud computing tasks, and dynamically adjusting and migrating the server cluster load, a new data center tie-line power control method is proposed. The results of calculation examples show that the method can achieve power smoothing of large-scale cloud data center tie lines through cloud-edge collaborative control.

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I3−/I−Redox Reaction-mediated Organic Zinc-Air Batteries with Accelerated Kinetics and Long Shelf Lives

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Angewandte Chemie 2023年第26期135卷

作者： Mangwei Cui Ninggui Ma Hao Lei Youfa Liu Wei Ling Sheng Chen Jiaqi Wang Prof. Hongfei Li Zhaohui Li Prof. Jun Fan Prof. Yan Huang State Key Laboratory of Advanced Welding and Joining Sauvage Laboratory for Smart Materials Shenzhen Key Laboratory of Flexible Printed Electronics Technology School of Materials Science and Engineering Harbin Institute of Technology (Shenzhen) Shenzhen 518055 China Department of Materials Science and Engineering City University of Hong Kong 83 Tat Chee Avenue Kowloon Hong Kong 999077 China Key Laboratory of Radiation Physics and Technology of Ministry of Education Institute of Nuclear Science and Technology Sichuan University Chengdu 610064 China School of System Design and Intelligent Manufacturing Southern University of Science and Technology Shenzhen 518055 China Songshan Lake Materials Laboratory Dongguan 523808 China Shenzhen China Star Optoelectronic Semiconductor Display Technology Co. Ltd. Shenzhen 518055 China

The storage time of Zn-air batteries (ZABs) for practical implementation have been neglected long-lastingly. ZABs based on organic solvents promise long shelf lives but suffer from sluggish kinetics. Here, we report a longly storable ZAB with accelerated kinetics mediated by I 3 − /I − redox. In the charge process, the electrooxidation of Zn 5 (OH) 8 Cl 2 ⋅H 2 O is accelerated by I 3 − chemical oxidation. In the discharge process, I − adsorbed on the electrocatalyst changes the energy level of oxygen reduction reaction (ORR). Benefitting from these advantages, the prepared ZAB shows remarkably improved round-trip efficiency (56.03 % vs. 30.97 % without the mediator), and long-term cycling time (>2600 h) in ambient air without replacing any components or applying any protective treatment to Zn anode and electrocatalyst. After resting for 30 days without any protection, it can still directly discharge continuously for 32.5 h and charge/discharge very stably for 2200 h (440 cycles), which is evidently superior to aqueous ZABs (only 0/0.25 h, and 50/25 h (10/5 cycles) by mild/alkaline electrolyte replenishment). This study provides a strategy to solve both storage and sluggish kinetics issues that have been plaguing ZABs for centuries, opening up a new avenue to the industrial application of ZABs.

关键词： Iodine-Containing Reaction Kinetics Redox Mediators Storage Time Zn-Air Batteries

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Research on lightning protection performance and rail transient potential for catenary of Qinghai-Tibet Railway

Research on lightning protection performance and rail transi...

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International Conference on High Voltage Engineering and Application, ICHVE

作者： Jilai Wang Huang Cheng Jinzkun Li Xiaotian Wang Tao Yuan China Railway First Survery And Design Institue Group Co. Ltd. Xi'an China State Key Laboratory of Power Transmission Equipment & System Security and New Technology Chongqing University Chongqing China

ISBN: (数字)9781728155111

ISBN: (纸本)9781728155128

Because of the poor geographical environment of Qinghai-Tibet Railway, the catenary is vulnerable to strike by lightning. At the same time, as the Qinghai-Tibet Railway is laid on the bridge, the probability of lightning striking the rail increases with the bridge rising. As a result, the rail transient potential rises which seriously threatens the safety of equipment and personnel along the railway. Based on the engineering situation of Qinghai-Tibet Railway, this paper establishes a lightning catenary simulation model by the electromagnetic transient simulation software ATP-EMTP. By combining the Elecrto-geometric Model(EGM), we analyzes the lightning withstand level of the catenary at different elevations and bridge heights. We also analyzes the influence of lightning current waveform and rail grounding resistance on rail transient potential when lightning strikes the rail. The simulation results show that the lightning withstand level of the catenary meets the requirements of regulations, and reducing the steepness of lightning current and rail ground resistance can effectively restrain the rise of rail transient potential.

关键词： Lightning Rails Rail transportation Wires Transient analysis Resistance Biological system modeling

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Scattering Environment Analysis of Quantum Radar for the Typical 2D target

Scattering Environment Analysis of Quantum Radar for the Typ...

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International Conference on Numerical Electromagnetic Modeling and Optimization for RF, Microwave, and Terahertz Applications (NEMO)

作者： Chonghua Fang Shi Xinyang Liu Qifeng Lei Feifei Wang Dongdong Science and Technology on Electromagnetic Compatibility Laboratory China Ship Development and Design Centre Wuhan China Wuhan Maritime Communication Research Institute Wuhan China State Key Laboratory of Power Transmission Equipment and System Security and New Technology School of Electrical Engineering Chongqing University Chongqing China Science and Technology on Electromagnetic Compatibility Laboratory Wuhan Ship Development and Design Institute Co.Ltd Wuhan China

ISBN: (数字)9781728169668

ISBN: (纸本)9781728169675

Quantum radar may become a revolutionary technology in the battlefield of the electromagnetic environment. In this work, we proposed a simulational analysis of the quantum radar scattering environment for the typical 2D target. By following the recent set-up of a principle prototype, we gave the data in both monostatic and bistatic scattering scenarios based on our calculation of the quantum radar cross section. In particular, we used the convenient analysis formulas instead of the traditional numerical algorithm in this simulation. Finally, our results showed that both monostatic and bistatic scattering data are relatively significant so that this set-up of simulation may be useful for the experimental feasibility.

关键词： Two dimensional displays Electromagnetic scattering Prototypes Numerical models Scattering parameters Electromagnetics Quantum radar

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Aerodynamic load extraction in the real-time hybrid model test for floating wind turbine

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Ocean Engineering 2025年 333卷

作者： Jiang, Zhihao Gao, Yuning Tian, Xinliang Chen, Gang Wen, Binrong Peng, Zhike Zhang, Wei Yang, Mindong Gao, Yang State Key Laboratory of Ocean Engineering Shanghai Jiao Tong University Shanghai200240 China SJTU Yazhou Bay Institute of Deepsea Technology Sanya57200 China State Key Laboratory of Mechanical System and Vibration Shanghai Jiao Tong University Shanghai200240 China School of Mechanical Engineering Ningxia University Yinchuan750021 China CPI Xinjiang Energy & Chemical Group Bozhou Co. Ltd Bozhou833400 China China Energy Engineering Group Guangdong Electric Power Design Institute Co. Ltd. Guangzhou510663 China Goldwind Sci & Tech Co. Ltd. Beijing100176 China

Physical model test is of great importance in testing new concepts in the field of ocean engineering, and floating wind turbine (FWT), a newly emerging renewable energy developing equipment, is of no exception. However, with the development trend of FWTs towards deeper waters and larger sizes, challenges and higher demands of physical model test are raised. Therefore, the real-time hybrid testing (RTHT) method is a new approach to breakthrough. And the RTHT method in wind tunnel can be applied to evaluate the aerodynamic performance, the control strategy of the wind turbine and the coupling effects between the wind turbine and floating support. This technical route highly relies on the real-time data interaction and aerodynamic load extraction. In the work of this paper, the aerodynamic load extraction method based on load and acceleration measurements is adopted. The performance of the method was evaluated under both steady wind and turbulent wind cases. Then the influence of parametric errors in mass and inertia of the model wind turbine on the RTHT system operation was studied through turbulent wind and irregular wave joint cases. The results indicate that the adopted load extraction method can properly identify the aerodynamic load in the real time. The studied RTHT system is more sensitive to gravitational parameter error than to the inertial parameter error. Under the same level of error, the reproduction of pitch motion is more sensitive among the 3 main discussed degrees of freedom. The study in this paper provides references and support for the data interaction and processing during the practice of the RTHT in wind tunnel. © 2025 Elsevier Ltd

关键词： Ocean engineering

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Higher mode effects in hinged wall with BRBsin base-frame structures using distributed parameter models

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Journal of Southeast University(English Edition) 2020年第1期36卷 56-66页

作者： Yang Xiaoyan Wu Jing Pang Xixi Wang Qiang Zhang Meng Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education Southeast University Nanjing 211189 China Xuzhou Survey and Design Center State Grid Economic and Technological Research Institute Co. Ltd. Xuzhou 221005 China Hong Kong Huayi Design Consultants (Shenzhen) Ltd. Shenzhen 518057 China Baosheng Integrated System Technology Co. Ltd. Baoying 225000 China

To investigate the effect of higher modes on the displacement and inner forces in HWBB(hinged wall with buckling-restrained braces in base)-frame structure,distributed parameter models for both the HWBB-hinged frame structure and the HWBB-MRF(moment resisting frame)structure are *** hinged wall is simplified as a flexural ***(bucking-restrained braces)are simplified to a rotational *** is simplified to a shear *** equations of distributed parameter models are *** periods,natural modes of vibration,inner forces and displacements of the distributed parameter models are derived based on the vibration equations using numerical *** effect of the relative stiffness ratio and the rotational stiffness ratio on the higher mode effects is *** elastic structures,the global displacement and shear in MRF are predominantly controlled by the first mode,while the shear and bending moment in the wall are significantly affected by higher mode *** effect of the yielding of BRB on the inner forces distribution in the HWBB-hinged frame is *** results indicate that the first mode will no longer contribute to the inner forces and the contribution from higher modes to inner forces increases after the BRBs *** is not sensitive to higher mode effects and it is controlled by the first mode after the BRBs *** analysis demonstrates that the displacement amplitudes are reduced with the increase in the flexural stiffness of the wall before the flexural stiffness reaches a certain *** first three periods decrease with the increase in the rotational *** the increase in the rotational stiffness ratio,the contribution from the first mode decreases while contributions from both the second mode and third mode increase.

关键词： hinged wall higher mode effects flexural beam rotational spring rotational stiffness ratio

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Experimental investigation of abnormal transverse flow enhancement of α particles in heavy-ion collisions

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Physical Review C 2021年第4期104卷 044611-044611页

作者： Y. Huang W. Lin H. Zheng R. Wada A. Bonasera Z. Chen J. Han R. Han M. Huang K. Hagel T. Keutgen X. Liu Y. G. Ma C. W. Ma Z. Majka G. Qu L. Qin P. Ren G. Tian J. Wang Z. Yang J. B. Natowitz Key Laboratory of Radiation Physics and Technology of the Ministry of Education Sichuan University Chengdu 610064 China School of Physics and Information Technology Shaanxi Normal University Xi'an 710119 China Cyclotron Institute Texas A&M University College Station Texas 77843 USA School of Physics Henan Normal University Xinxiang 453007 China Laboratori Nazionali del Sud INFNvia Santa Sofia 62 95123 Catania Italy Institute of Modern Physics Chinese Academy of Sciences Lanzhou 730000 China College of Physics and Electronics Information Inner Mongolia University for Nationalities Tongliao 028000 China FNRS and IPN Université Catholique de Louvain B-1348 Louvain-Neuve Belgium Key Laboratory of Nuclear Physics and Ion-Beam Application (MOE) Institute of Modern Physics Fudan University Shanghai 200433 China Shanghai Institute of Applied Physics Chinese Academy of Sciences Shanghai 201800 China Jagiellonian University Krakow Poland School of Science Huzhou University Huzhou 313000 China Science and Technology on Reactor System Design Technology Laboratory Nuclear Power Institute of China Chengdu 610213 China

The mass dependence of the transverse flow for Z=1–5 fragments from the collisions of Ar40+Al27, Ar40+Ti48, and Ar40+Ni58 at 47 MeV/nucleon is investigated experimentally in this article. The transverse flow values are determined using the in-plane components of the fragment transverse momenta, where three conventional methods, i.e., the kinetic flow tensor method, the transverse momentum analysis method, and the azimuthal correlation method, are applied to reconstruct the reaction plane in an event-by-event basis. It is demonstrated from the comparison of the present experimental mass dependent flow measurements and the model simulations using an improved antisymmetrized molecular dynamics model that the experimentally observed abnormal α transverse flow enhancement is closely related to the reaction plane reconstruction procedure in the flow extraction. We further investigate the physical existence of the abnormal α flow behavior using a two-particle azimuthal correlation method, which allows us to provide the relative flow magnitude information with an identification of fragment charge number without the knowledge of the reaction plane differing from the three conventional methods. It is found that the relative flow magnitudes deduced from the two-particle azimuthal correlation functions with an identification of Z, with the correction for the recoil effect imposed by the momentum conservation, show a monotonically increasing trend as a function of fragment charge number, with no exception of the α flow enhancement. These results, in addition to those from the improved antisymmetrized molecular dynamics model simulations, definitely provide experimental evidences for the inexistence of the abnormal α flow behavior in the heavy-ion collisions at the present incident energy region in nature.

关键词： Collective flow Low & intermediate energy heavy-ion reactions Nuclear reaction analysis

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Research and Application for Finishing Hot Mill Strip Width Model

Research and Application for Finishing Hot Mill Strip Width ...

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Chinese Automation Congress (CAC)

作者： Xiang Rong SONG Zhi Qiang LIU CISRI Automation Research and Design Institute of Metallurgical Industry Beijing China State Key Laboratory of Hybrid Process Industry Automation System and Equipment technology Beijing China CISRI Steel Industry Green and Intelligent Manufacturing Technology Center Beijing China Automation Research and Design Institute of Metallurgical Industry of CISRI Beijing China

ISBN: (数字)9781728176871

ISBN: (纸本)9781728176888

Finishing hot mill width models are researched and developed in this paper. Some common reasons of width change in the finishing mill are introduced. Introduced some models related to finishing hot mill strip width which are used in our finishing mill setup model system for width prediction. These models include spread during horizontal rolling, width change caused by looper, width variation by high temperature creep and heat expansion and cold contraction during rolling. It is used to a 1700mm stainless steel hot mill rolling production line and the target width performance has a good effect. And the roughing mill width self-learning coefficient for finishing mill width changes are smooth and stable.

关键词： Strips Finishing Strain Stress Steel Creep Plastics

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Connectors based on 2-way SMA actuator for self-reconfigurable chain robots 15

Connectors based on 2-way SMA actuator for self-reconfigurab...

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15th IEEE International Conference on Mechatronics and Automation, ICMA 2018

作者： Ni, Fenglei Li, Yongqiang Zhou, Yunhu Liu, Hong Tang, Yuan State Key Laboratory of Robotics and System Harbin Institute of Technology Harbin Heilongjiang Province China Science and Technology on Reactor System Design Technology Laboratory Nuclear Power Institute of China Chengdu610213 China

ISBN: (纸本)9781538660720

Self-reconfigurable modular robots have shown great potential in carrying out multiple tasks in different conditions. A connection of both flexibility and reliability is critical for realizing the docking and transformation of the modular robots. We propose a new design of connectors based on SMA which has the advantages of high autonomy, small size and high speed. The couples of connectors consist of active and passive connector. In the active connector, a two-way rotary SMA actuator is used as the actuation mechanism. The double-layer cam and claws are used as an executive mechanism. The passive connector can be securely docked in five different facets for 3D reconfigurations. The multisensory system and hardware architecture provide the foundation for control strategies. The design and the prototype of the connector are described in this paper. Finally, experimental results to evaluate the performance of docking are presented. © 2018 IEEE.

关键词： Modular robots

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