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检索条件"任意字段=8th International Conference on Modeling Simulation and Applied Optimization, ICMSAO 2019"

共 199 条记录，以下是191-200 订阅

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Research on Adaptive Front-lighting Systems with the influence of multiple factors 2019

Research on Adaptive Front-lighting Systems with the influen...

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Proceedings of the 2019 8th international conference on Networks, Communication and Computing

作者： Liu Shanzhong Liu Yongbin Li Jinhui School of Information Engineering Henan University of Science and Technology Luoyang China School of Transportation and Vehicle Engineering Henan University of Science and Technology Luoyang China

ISBN: (纸本)9781450377027

Aiming at the complexity of Adaptive Front-lighting Systems(AFS) modeling, a method of modeling AFS system by training neural network model is proposed. through the analysis of prior knowledge and actual situation, Two typical working conditions are modeled in horizontal and vertical directions. RBF neural network is created on MATLAB to train and verify the network, and the fuzzy PID control strategy is added to AFS to optimize the performance of system. simulation results show that the system model established by this method has a good precision, the fuzzy PID controller can greatly reduce the excessive deflection angle of headlamp, so the service life and the working accuracy of the headlamp can be improved.

关键词： Control optimization Intelligent headlamp system A variety of road conditions RBF neural network

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Enhancing Reliability of Energy Systems With Digital Twins: Challenges and Opportunities

Enhancing Reliability of Energy Systems With Digital Twins: ...

引用

international conference on System Reliability and Science (ICSRS)

作者： Omar Mostafa Sanja Lazarova-Molnar Institute of Applied Informatics Formal Description Methods Karlsruhe Institute of Technology Karlsruhe Germany The Maersk Mc-Kinney Moller Institute University of Southern Denmark Odense Denmark

ISBN: (数字)9798350354508

ISBN: (纸本)9798350354515

Digital Twins enable real-time monitoring through automatic model extraction of complex systems using data from sensors, meters and IoT devices to facilitate valuable decisions. In energy systems, Digital Twins can be integrated to improve system reliability by enabling adaptability to demand fluctuations and system disturbances. With the increasing share of renewable energy sources, reliability and stability of power grids is challenged by intermittent supply, unexpected disturbances, and demand mismatches. In this paper, we explore the use of modelling and simulation for reliability analysis and investigate automation of reliability model extraction for Digital Twins in the context of energy systems. By reviewing Digital Twin applications in energy systems, including energy optimization and predictive maintenance, the paper contributes to the understanding of trends, challenges, and opportunities in improving reliability of energy systems through a comprehensive review of literature and implementation results.

关键词： Adaptation models Analytical models Reviews Stability analysis Sensor systems Digital twins Sensors Safety Reliability Context modeling

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Simultaneous Integration of Renewable Power Generation and Battery Energy Storage in Distribution Networks

Simultaneous Integration of Renewable Power Generation and B...

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international conference on Power Systems (ICPS)

作者： Pushpendra Singh S. K. Bishnoi Nand K. Meena Jin Yang Electrical Engineering Department Government Women Engineering College Ajmer Ajmer Rajasthan India Electronics and Communications Department Government Engineering College Bikaner Bikaner Rajasthan India School of Engineering and Applied Science Aston Universitygdom

ISBN: (数字)9781728141039

ISBN: (纸本)9781728141046

this article presents a bi-level optimization structure for concurrently deployment of wind base power production,i.e. Wind Turbine (WT ) with Battery Energy Storage System (BESS) in power distribution networks. An objective function has been devised by considering reverse power flow into main power grid, annual energy loss, node voltage deviation, conversion loss and effective utilization of BESS. Due to huge installation and operational charges of energy storage, the optimal accommodation of multiple WTs and one BESS is simultaneously determined aiming to minimize network power loss. A modified or Corrected Moth Search optimization (CMSO) has been endorse to solve this problem for a medium benchmark radial distribution network. Considering its unique capabilities of exploration and exploitation for real life problems. Different test cases are investigated to demonstrate the promising abilities of devised framework. the comparison of obtain results from simulation demonstrates that suggested optimization framework significantly reduced the annual energy loss and energy brought from the main power grid, while improving DG hosting capacity of the system.

关键词： optimization Rats Energy storage Wind power generation Linear programming Energy loss

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Optimal Placement of Electric Vehicle Charging Stations in a Distribution Network

Optimal Placement of Electric Vehicle Charging Stations in a...

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international conference on Power Systems (ICPS)

作者： Arindam Sadhukhan S. Sivasubramani Md Samar Ahmad Department of Electrical Engineering Indian Institute of Technology Patna Rolls-Royce@NTU Corporate Lab NTU Singapore

ISBN: (数字)9781728141039

ISBN: (纸本)9781728141046

the rising popularity and improved environmental awareness are making the present transportation network move towards electric vehicles (EVs). With the increased number of grid-connected EVs, inappropriate placement of charging stations (CSs) will be injurious to city traffic layout and the power distribution network. It will also deprive the convenience of EV owners and increase distribution loss. therefore, this paper proposes a new method for optimal allocation of CSs by minimizing distribution losses of the system and increasing the utilization factor of CSs. Since these two objectives are contradictory, non-dominated sorting genetic algorithm (NSGAII) is used to solve them. A probabilistic load modelling method is employed to develop the charging demand of EVs. the proposed method is tested on a test system which is obtained by modifying the standard IEEE 33 bus system. simulation results show that the proposed method is not only able to reduce the system loss but also achieve economical benefits while placing CSs in a network.

关键词： Cascading style sheets Charging stations Electric vehicle charging Probabilistic logic Load modeling Linear programming optimization

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Energy Efficiency Optimal Dispatch for Park-Level Energy Internet

Energy Efficiency Optimal Dispatch for Park-Level Energy Int...

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international conference on Advanced Power System Automation and Protection (APAP)

作者： LONG Tao BIE Zhaohong School of Electrical Engineering Xi’an Jiaotong University Xi’an China

ISBN: (数字)9781728117225

ISBN: (纸本)9781728117232

In order to improve energy efficiency and renewable energy accommodation, energy efficiency optimal dispatch is proposed for park-level energy internet. In view of the multi-energy flow characteristics of park-level energy internet, a new indicator named energy utilization exergy-efficiency is proposed. the indicator introduces the concept of exergy and considers the impact of grid-connected microgrid and distributed renewable energy. A corresponding model of energy efficiency optimal dispatch is established. the rationality and superiority of the proposed indicator and model are verified by case study. the simulation results show that energy utilization exergy-efficiency can more accurately reflect the efficient use of energy by park-level energy internet. Energy efficiency optimal dispatch can promote energy cascade utilization, energy-saving and emission-reduction. And there is consistency between the results of the proposed dispatch and economic dispatch, which can help guide the development of outsourcing electricity prices for park-level energy internet in the incremental distribution network area.

关键词： Energy efficiency optimization Renewable energy sources Load modeling Resistance heating Coal Heating systems

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optimization Design and Feature Research on VSG Control Strategy of Marine Photovoltaic Grid-connected Inverter

Optimization Design and Feature Research on VSG Control Stra...

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international conference on Renewable Energy Research and Applications (ICRERA)

作者： Xujing Tang Yaling Huang Yuwei Sun Chengqing Yuan Yu Hang School of Energy and Power Eng. Wuhan Unv. of Tech. Key Laboratory of Marine Power Eng. and Tech. (MoT) Wuhan China School of Energy and Power Eng. Wuhan Unv. of Tech. Reliability Eng. Institute National Eng. Research Center for Water Transportation Safety (WTS Center MoST) Wuhan China School of Energy and Power Eng. Wuhan Unv. of Tech. Reliability Eng. Institute National Eng. Research Center for Water Transportation Safety (WTS Center MoST) Key Laboratory of Marine Power Eng. and Tech. (MoT) Wuhan China School of Energy and Power Eng. Wuhan Unv. of Tech. Wuhan China

ISBN: (纸本)9781728135885

Aiming at improving the schedulability and stability of photovoltaic (PV) system that integrated within the ship power system (SPS), this paper proposes a virtual synchronous generator (VSG) based control strategy for the PV grid-connected inverter. the virtual inertia power is introduced into the reference power value by a first-order inertia function, so as to change the inertia and damping characteristics of the inverter and show similar operating features as those of traditional diesel synchronous generator (DG). Both droop control and logic threshold control strategies are applied to realize the automatic power distribution between the inverter and the generator. Under the simulation environment of PSCAD/ EMTDC software, an original marine PV grid-connected power system model is established. the simulation cases are discussed under two typical operation conditions, which are depended on whether or not the power management system (PMS) is put into the utilization. then, the active/reactive power distribution response and frequency fluctuation characteristics of these two power sources are compared by applying the traditional constant power (PQ) control and VSG control strategy respectively. the results show that this novelty VSG control strategy has immediate effectiveness in suppressing the frequency fluctuation of the power grid, and realizing the automatic and proportional output power adjustment for the grid-connected inverter, which can significantly improve the grid stability.

关键词： Inverters Power system stability Power generation Marine vehicles Frequency control Fluctuations Control systems

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Control optimization of PMSG based WECS with Modified PLL and DC-link Voltage Relaxation

Control Optimization of PMSG based WECS with Modified PLL an...

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international conference on Advanced Power System Automation and Protection (APAP)

作者： Yichao Zou Yongqing Meng Jin Li Ying Kong Rong Ye Zhangsui Lin School of Electrical Engineering Xi’an Jiaotong University Xi’an China Research Institute of Economics and Technology State Grid Fujian Electric Power Company Fuzhou China

ISBN: (数字)9781728117225

ISBN: (纸本)9781728117232

Recently offshore wind power have developed rapidly. As the mainstream generator of offshore wind farm, permanent magnet synchronous generator (PMSG) has been increasingly applied in offshore wind farm. the operating performance of PMSG based wind energy conversion system (WECS) depends on the performance of control system, which relies on the accurate measurement of phase-locked loop (PLL). this paper propose a modified PLL scheme to improve system stability. A DC-link voltage relaxation control strategy is also applied to obtain a fast response and lower over-voltage level, which can lead to better control performance and reduced cost. Small signal stability analysis as well as simulation results verified that the optimized system have greater stability and better performance.

关键词： Phase locked loops Voltage control Voltage measurement Power system stability Mathematical model Control systems Power transmission lines

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Reliability Evaluation Of Power System Network With Solar Energy

Reliability Evaluation Of Power System Network With Solar En...

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international conference on Power Systems (ICPS)

作者： Soumya M. Mudgal Atul Kumar Yadav Vasundhara Mahajan Department of Electrical Engineering SVNIT Surat India

ISBN: (数字)9781728141039

ISBN: (纸本)9781728141046

Solar energy, an alternative to the present conventional generator system, is discussed in this paper. Analysis of various photo-voltaic solar modules, installed at multiple locations, is done based on their reliability indices and active power flow. the Markovian approach is applied for solar irradiation modelling to perform the calculation of transition rates. Monte Carlo simulation methods, used for capacity calculations, are uniquely combined with the Markovian approach in the proposed model. Based on the capacity states generated, the corresponding probability is calculated which is used to find out the reliability indices like Loss of Load Expectations (L.O.L.E.), Expected Energy Not Supplied (E.E.N.S.) and Expected Demand which could not be Supplied (E.D.N.S.). the interference of solar energy in the conventional system decreases the overall reliability of the system. the load flow analysis shows that there is a decrease in the line losses when solar energy is utilised. Reliability Test system of IEEE is simulated for reliability analysis for proposed method.

关键词： Reliability Generators Load modeling Mathematical model Solar energy Power system reliability Indexes

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the Components Layout optimization of Circuit Module Based on the Artificial Nerve Network

The Components Layout Optimization of Circuit Module Based o...

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第八届电子封装技术国际会议(2007 8th international conference on Electronics Packaging Technology ICEPT2007)

作者： Hong-yan Huang Zhao-hua Wu De-jian Zhou School of Electro-Mechanical Engineering Xidian University Xi'an 710071 China The Academy of Appl The Academy of Applied Science Guilin University of Electronic Technology Guilin 541004 China

With the increasingly complexity function and ameliorative performance of electronic products, the density of the PCB(printed circuit board) and the frequency of the correlative parts are continuously rising, and are resulting in all sorts of challenge concerning high speed and high density PCB design. And with the improvement of the PCB assembly density, the power dissipation per unit area is increased accordingly and the heat in the PCB is concentrated *** the temperature increment of some device and component or other will lead to the circuit work stability and reliability, for an example, bringing forth the thermal fatigue failure of the electronic component. So, the thermal design of the electronic product is the keypoint the engineering designer should put emphases on. Among all, reliable thermal analysis and design is just the important method of improving thermal reliability of PCB. In this paper a model for temperature field analysis is established by FEM( finite element method) and computer aided thermal simulation soft,with regard to such factors affecting temperature as heat generation 、 heat diffusion manner and direction 、 ratio of length and width of component 、 thickness of PCB and so on. And the artificial nerve network method for components layout optimization is applied to achived a reasonable components position in a small space and a best temperature distribution. Also some reference of concrete measure and method for thermal design is hoped to do the PCB designers a favor. In this paper, a simplified pc module of the threedimensional asmble circuit module is treated as analysis object, and is analized by general finite element soft -ANSYS. Its geometric and finite element simulation model are shown as figure 1 and 2 respectively, and corresponding material parameters is shown in table 1. By changing such different variable parameters as heat generation 、 component layout direction 、 PCB thickness and so on, some samples for differe

关键词： Finite element methods thermal factors Computational modeling Analytical models Circuit simulation Computer simulation optimization methods Temperature distribution Concrete Design methodology

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