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Review of Comprehensive Evaluation Methods for Power Quality and Its Trend in New Generation Energy System

IOP Conference Series: Earth and Environmental Science 2018年第1期113卷

作者： Ruihua Liu Rong Wang Qunying Liu Li Yang Chuan Xi Wei Wang Lingzhou Li Zhoufang Zhao Ying Zhou Sichuan Electric Vocational and Technical College Sichuan Chengdu 610071 School of Automation Engineering University of Electronic Science and Technology of China Chengdu 611731

With China's new energy generation grid connected capacity being in the forefront of the world and the uncertainty of new energy sources, such as wind energy and solar energy, it is be of great significance to study scientific and comprehensive assessment of power quality. On the foundation of analysizing the current power quality index systematically and objectively, the new energy grid power quality analysis method and comprehensive evaluation method, this paper tentatively explored the trend of the new generation of energy system power quality comprehensive evaluation.

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Performance of the MICE diagnostic system

arXiv

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arXiv 2021年

作者： Bogomilov, M. Tsenov, R. Vankova-Kirilova, G. Song, Y.P. Tang, J.Y. Li, Z.H. Bertoni, R. Bonesini, M. Chignoli, F. Mazza, R. Palladino, V. de Bari, A. Orestano, D. Tortora, L. Kuno, Y. Sakamoto, H. Sato, A. Ishimoto, S. Chung, M. Sung, C.K. Filthaut, F. Fedorov, M. Jokovic, D. Maletic, D. Savic, M. Jovancevic, N. Nikolov, J. Vretenar, M. Ramberger, S. Asfandiyarov, R. Blondel, A. Drielsma, F. Karadzhov, Y. Charnley, G. Collomb, N. Dumbell, K. Gallagher, A. Grant, A. Griffiths, S. Hartnett, T. Martlew, B. Moss, A. Muir, A. Mullacrane, I. Oates, A. Owens, P. Stokes, G. Warburton, P. White, C. Adams, D. Bayliss, V. Boehm, J. Bradshaw, T.W. Brown, C. Courthold, M. Govans, J. Hills, M. Lagrange, J.-B. Macwaters, C. Nichols, A. Preece, R. Ricciardi, S. Rogers, C. Stanley, T. Tarrant, J. Tucker, M. Watson, S. Wilson, A. Bayes, R. Nugent, J.C. Soler, F.J.P. Gamet, R. Cooke, P. Blackmore, V.J. Colling, D. Dobbs, A. Dornan, P. Franchini, P. Hunt, C. Jurj, P.B. Kurup, A. Long, K. Martyniak, J. Middleton, S. Pasternak, J. Uchida, M.A. Cobb, J.H. Booth, C.N. Hodgson, P. Langlands, J. Overton, E. Pec, V. Smith, P.J. Wilbur, S. Chatzitheodoridis, G.T. Dick, A.J. Ronald, K. Whyte, C.G. Young, A.R. Boyd, S. Greis, J.R. Lord, T. Pidcott, C. Taylor, I. Ellis, M. Gardener, R.B.S. Kyberd, P. Nebrensky, J.J. Palmer, M. Witte, H. Adey, D. Bross, A.D. Bowring, D. Hanlet, P. Liu, A. Neuffer, D. Popovic, M. Rubinov, P. DeMello, A. Gourlay, S. Lambert, A. Li, D. Luo, T. Prestemon, S. Virostek, S. Freemire, B. Kaplan, D.M. Mohayai, T.A. Rajaram, D. Snopok, P. Torun, Y. Cremaldi, L.M. Sanders, D.A. Summers, D.J. Coney, L.R. Hanson, G.G. Heidt, C. Department of Atomic Physics St. Kliment Ohridski University of Sofia 5 James Bourchier Blvd Sofia Bulgaria Institute of High Energy Physics Chinese Academy of Sciences 19 Yuquan Rd Shijingshan District Beijing China Sichuan University 252 Shuncheng St Chengdu China Sezione INFN Milano Bicocca Dipartimento di Fisica G. Occhialini Piazza della Scienza 3 Milano Italy Sezione INFN Napoli Dipartimento di Fisica Università Federico II Complesso Universitario di Monte S. Angelo via Cintia Napoli Italy Sezione INFN Pavia Dipartimento di Fisica Università di Pavia Via Agostino Bassi 6 Pavia Italy Sezione INFN Roma Tre Dipartimento di Matematica e Fisica Università Roma Tre Via della Vasca Navale 84 Roma Italy Osaka University Graduate School of Science Department of Physics 1-1 Machikaneyamacho Osaka Toyonaka Japan Institute of Particle and Nuclear Studies Ibaraki Tsukuba Japan Department of Physics UNIST 50 UNIST-gil Ulsan Korea Republic of Nikhef Science Park 105 Amsterdam Netherlands Radboud University Houtlaan 4 Nijmegen Netherlands Institute of Physics University of Belgrade Serbia Faculty of Sciences University of Novi Sad Trg Dositeja Obradovića 3 Novi Sad Serbia CERN Esplanade des Particules 1 Geneva Switzerland DPNC Section de Physique Université de Genève 24 Quai Ernest-Ansermet Geneva Switzerland STFC Daresbury Laboratory Keckwick Ln Cheshire Daresbury United Kingdom STFC Rutherford Appleton Laboratory Harwell Campus Didcot United Kingdom School of Physics and Astronomy Kelvin Building University of Glasgow Glasgow United Kingdom Department of Physics University of Liverpool Oxford St Liverpool United Kingdom Department of Physics Blackett Laboratory Imperial College London Exhibition Road London United Kingdom Department of Physics University of Oxford Denys Wilkinson Building Keble Rd Oxford United Kingdom Department of Physics and Astronomy University of Sheffield Hounsfield Rd Sheffield United Kingdom SUPA The

Muon beams of low emittance provide the basis for the intense, well-characterised neutrino beams of a neutrino factory and for multi-TeV lepton-antilepton collisions at a muon collider. The international Muon Ionization Cooling Experiment (MICE) has demonstrated the principle of ionization cooling, the technique by which it is proposed to reduce the phase-space volume occupied by the muon beam at such facilities. This paper documents the performance of the detectors used in MICE to measure the muon-beam parameters, and the physical properties of the liquid hydrogen energy absorber during running. Copyright © 2021, The Authors. All rights reserved.

关键词： Mammals

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A study on the structural design and functional simulation of an automatic cleaning machine for dining tables

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International Journal of Simulation: Systems, Science and technology 2016年第49期17卷 3.1-3.5页

作者： Hu, Chuanmei Wei, Zongyi College of Applied Nuclear Technology and Automation Engineering Chengdu University of Technology ChengduSichuan610059 China

Currently there are no cleaning machines for dinning tables available in the market, dinning tables at fast-food restaurants, canteens and the like occasions have to be manually cleaned with cloth as is a convention of hard labor. It takes a great deal of time, labor and water to clean tables properly this way;plus there is no necessary sterilization available. Based on analysis of the perspective users and market demand, an automatic cleaning machine for dining tables has some innovative features in its structure, operating principle, external appearance and color matching. It can make the dinning-table cleaning process quick, automatic, efficient and environment-friendly on the basis of adequate consideration of the combination of functions and easy operation. Our research results can also provide reference for other auto cleaners. © 2016, UK Simulation Society. All rights reserved.

关键词： Color matching

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Effect of the correlation between internal noise and external noise on logical stochastic resonance in bistable systems

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Physical Review E 2017年第5期96卷 052203-052203页

作者： Lei Zhang Wenbin Zheng Fei Xie Aiguo Song School of Electrical and Automation Engineering Nanjing Normal University Nanjing 210046 People's Republic of China College of Software Engineering Chengdu University of Information Technology Chengdu 610225 People's Republic of China School of Instrument Science and Engineering Southeast University Nanjing 210096 People's Republic of China

Some noisy nonlinear systems could be exploited to operate reliable logic operation in an optimal window of noise intensity, which is termed as logical stochastic resonance (LSR). We investigated the LSR phenomenon in bistable systems when internal noise and external noise are correlated. The LSR effect is evaluated by the success probability of the obtained desired output with various combinations of logic inputs. It is shown that the or-nor, and-nand, and Latch operations still can operate reliably with the correlated internal noise and external noise. A positive correlation strength tends to enhance or-nor logic and suppress and-nand logic. The negative correlation strength tends to suppress or-nor logic and enhance and-nand logic. The results provide possible corroboration for implementing reliable LSR when internal noise and external noise are correlated.

关键词： Bifurcations Chaos Control & applications of chaos

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Corrigendum to “Thermal neutron albedo measurements for multilithic reflectors” [Ann. Nucl. Energy, 62 (2013) 1–7]

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Annals of nuclear Energy 2018年 120卷 569-569页

作者： Khurram Mehboob Raheel Ahmed Majid Ali Department of Physics Comsats Institute of Information Technology Islamabad 44000 Pakistan College of Nuclear Science and Technology Harbin Engineering University Harbin 150001 China College of Automation Harbin Engineering University Harbin 150001 China

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Modeling hysteresis for magnetostrictive actuators 35

Modeling hysteresis for magnetostrictive actuators

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第35届中国控制会议

作者： SHEN Yu MA Lianwei LI Jinrong ZHANG Xiuyu ZHAO Xinlong ZHENG Hui Department of Applied Physics Zhejiang University of Science and Technology Department of Automation Zhejiang University of Science and Technology School of Automation Engineering Northeast Dianli University College of Mechanical Engineering and Automation Zhejiang Sci-Tech University

ISBN: (纸本)9781509009107

In this paper, a new method to construct neural-network-based hysteresis model is proposed. At first, a new backlash operator is presented so as to construct a basic model. And then, based on the basic model, a two-dimension input space is established so that the one-to-multiple mapping of hysteresis can be transformed into a one-to-one mapping which can be identified by using traditional method of neural networks. Finally, two experiments were implemented to validate the proposed neural hysteresis model. The experimental results demonstrate that the approach is effective.

关键词： hysteresis basic model backlash operator neural networks

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Research of single pulse trapezoidal shaping algorithm in digital nuclear spectrum measurement

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Journal of Computational and Theoretical Nanoscience 2016年第7期13卷 4510-4514页

作者： Wang, Min Zhou, Jianbin Hong, Xu Liu, Ying College of Nuclear Technology and Automation Engineering Chengdu University of Technology Chengdu610059 China

In order to improve the performance of digital spectrum measuring instrument, efficient recursive algorithm is used to achieve fast digital pulse shaping, and real-time trapezoidal pulse instead of the traditional analog pulse, so that the subsequent amplitude extraction and peak amplitude accumulation processing become easier. According to the experimental verification, realization of this technique improves the performance of spectrum measuring instrument. Especially the single pulse trapezoidal shaping technology make the energy resolution of the spectrum measuring instrument significantly improved. © 2016 American Scientific Publishers All rights reserved.

关键词： Pulse shaping

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Development of a hydrogen consumption optimization based dynamic penalty control strategy for a PEMFC-LIB-SC hybrid tramway

Development of a hydrogen consumption optimization based dyn...

引用

IEEE Conference on Energy Internet and Energy System Integration (EI2)

作者： Xinru Wang Fei Peng Di Wang Xiaopeng Li College of Electrical Engineering and Automation Shandong University of Science and Technology Qingdao China State Grid Sichuan Electric Power Research Institute Chengdu China

ISBN: (纸本)9781538614280

To meet the rapid changes in power demand, and more efficient use of PEM fuel cell power supply, the equivalent hydrogen consumption minimization (EHCM) based dynamic penalty control (DPC) strategy was proposed for the modern PEMFC-LIB-SC hybrid tramway. And an effective informed adaptive based particle searching optimization (EIA-PSO) algorithm which is more robust in terms of global search capability and local search precision was utilized to optimize the derived parameter clusters to effectively achieve the optimization of equivalent hydrogen consumption. The results demonstrated that the proposed control strategy could realize the operation stabilization of the overall hybrid power system during the simulated driving cycle. Finally, the comparisons with other control strategies verify that the proposed energy management system can achieve better performance of the overall hybrid tramway.

关键词： Hybrid power systems Power system dynamics Energy management Optimized production technology Master-slave Power generation Fluctuations

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The Analysis of Bamboo Sheet Mechanical Properties in the Process of Shaping and Study on Application

The Analysis of Bamboo Sheet Mechanical Properties in the Pr...

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2016 4th International Conference on Advanced Materials and Information technology Processing(AMITP 2016)

作者： Jian Yang Sheng Jia Yixiang Peng Yanfang Wang College of Nuclear Technology and Automation Engineering Chengdu University of Technology

Detailed studies about the deformation principles and processing mechanisms of bamboo sheet cell cube are theoretical foundation to realize mechanization, automation and informatization of bamboo products manufacturing, and also the key to develop different kinds of bamboo knit machine. For internal stress and external torques needed here are changing constantly during all the time of bamboo sheet's bending and ring up, this paper use ANSYS software to establish a finite element analysis model for a piece of bamboo sheet which is in 450 mm length, 16 mm wide and 1mm thickness, and study its mechanical properties under different torques. The model shows the stress distribution and bamboo deformation regular patterns, which reveals the relations between revolving control positions and the needed moments of the two pairs of revolving tongs. Based on these studies, a pair of adjustable revolving tongs applying on a special bamboo shaping machine which can automatically shape 20 pieces of bamboo sheets simultaneously without slipping was innovative developed.

关键词： Bamboo sheet finite element analysis mechanical model revolving tongs

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Measurement of the fast neutron background at the China Jinping Underground Laboratory

arXiv

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arXiv 2017年

作者： Du, Q. Lin, S.T. Liu, S.K. Tang, C.J. Wang, L. Wei, W.W. Wong, H.T. Xing, H.Y. Yue, Q. Zhu, J.J. College of Physical Science and Technology Sichuan University Chengdu610064 China Institute of Nuclear Science and Technology Sichuan University Chengdu610064 China Department of Engineering Physics Tsinghua University Beijing100084 China Institute of Physics Academia Sinica Taipei11529 Taiwan

We report on the measurements of the fluxes and spectra of the environmental fast neutron background at the China Jinping Underground Laboratory (CJPL) with a rock overburden of about 6700 meters water equivalent, using a liquid scintillator detector doped with 0.5% gadolinium. The signature of a prompt nuclear recoil followed by a delayed high energy γ-ray cascade is used to identify neutron events. The large energy deposition of the delayed γ-rays from the (n, γ) reaction on gadolinium, together with the excellent n-γ discrimination capability provides a powerful background suppression which allows the measurement of a low intensity neutron flux. The neutron flux of (1.51±0.03 (stat.)±0.10 (syst.))×10-7cm-2s-1in the energy range of 1 - 10MeV in the Hall A of CJPL was measured based on 356 days of data. In the same energy region, measurement with the same detector placed in a one meter thick polyethylene room gives a significantly lower flux of (4.9±0.9 (stat.)±0.5 (syst.))×10-9cm-2s-1with 174 days of data. This represents a measurement of the lowest environmental fast neutron background among the underground laboratories in the world, prior to additional experiment-specific attenuation. Additionally, the fast neutron spectra both in the Hall A and the polyethylene room were reconstructed with the help of GEANT4 simulation. Copyright © 2017, The Authors. All rights reserved.

关键词： Gamma rays

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