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Energy internet technology: modeling, optimization and dispatch of integrated energy systems

Shilie WENG, Chenghong GU, Yiwu WENG

Frontiers in Energy 2018, Volume 12, Issue 4,   Pages 481-483 doi: 10.1007/s11708-018-0604-9

Abstract:
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HOTSPOTS OF NUTRIENT LOSSES TO AIR AND WATER: AN INTEGRATED MODELING APPROACH FOR EUROPEAN RIVER BASINS

Frontiers of Agricultural Science and Engineering 2023, Volume 10, Issue 4,   Pages 579-592 doi: 10.15302/J-FASE-2023526

Abstract:

Nutrient pollution of air and water is a persistent problem in Europe. However, the pollution sources are often analyzed separately, preventing the formulation of integrative solutions. This study aimed to quantify the contribution of agriculture to air, river and coastal water pollution by nutrients. A new MARINA-Nutrients model was developed for Europe to calculate inputs of nitrogen (N) and phosphorus (P) to land and rivers, N emissions to air, and nutrient export to seas by river basins. Under current practice, inputs of N and P to land were 34.4 and 1.8 Tg·yr–1, respectively. However, only 12% of N and 3% of P reached the rivers. Agriculture was responsible for 55% of N and sewage for 67% of P in rivers. Reactive N emissions to air from agriculture were calculated at 4.0 Tg·yr–1. Almost two-fifths of N emissions to air were from animal housing and storage. Nearly a third of the basin area was considered as pollution hotspots and generated over half of N emissions to air and nutrient pollution in rivers. Over 25% of river export of N ended up in the Atlantic Ocean and of P in the Mediterranean Sea. These results could support environmental policies to reduce both air and water pollution simultaneously, and avoid pollution swapping.

Keywords： agriculture     air-water modeling     European rivers     nutrient pollution     sewage systems     source attribution    

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M-LFM: a multi-level fusion modeling method for shape−performance integrated digital twin of complex

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 4, doi: 10.1007/s11465-022-0708-0

Abstract: developing a new digital twin framework that includes simulation data, measuring data, multi-level fusion modeling

Keywords： shape−performance integrated digital twin (SPI-DT)     multi-level fusion modeling (M-LFM)     surrogate model    

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A framework for an integrated unified modeling language

Mohammad ALSHAYEB,Nasser KHASHAN,Sajjad MAHMOOD

Frontiers of Information Technology & Electronic Engineering 2016, Volume 17, Issue 2,   Pages 143-159 doi: 10.1631/FITEE.1500094

Abstract:

The unified modeling language (UML) is one of the most commonly used modeling languages in the softwarewe propose a framework for integrating the UML extensions and then use the framework to propose an integratedone integrated form.This includes an integrated diagram for UML class, sequence, and use case diagrams.The proposed iUML-g is capable of modeling systems that use different domains.

Keywords： Unified modeling language (UML)     Integration     Modeling     System analysis and design    

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A modeling system for drinking water sources and its application to Jiangdong Reservoir in Xiamen city

Pengfei DU, Zhiyi LI, Jinliang HUANG

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 5,   Pages 735-745 doi: 10.1007/s11783-013-0560-x

Abstract: The hydrological model and water quality model were integrated by computer programming, and the watershedmodel was indirectly integrated into the system through a network platform.

Keywords： water source     integrated modeling system     prediction     Jiulong River    

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Towards an integrated modeling of the plasma-solid interface

Michael Bonitz, Alexey Filinov, Jan-Willem Abraham, Karsten Balzer, Hanno Kählert, Eckhard Pehlke, Franz X. Bronold, Matthias Pamperin, Markus Becker, Dettlef Loffhagen, Holger Fehske

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 2,   Pages 201-237 doi: 10.1007/s11705-019-1793-4

Abstract: Solids facing a plasma are a common situation in many astrophysical systems and laboratory setups. Moreover, many plasma technology applications rely on the control of the plasma-surface interaction, i.e., of the particle, momentum and energy fluxes across the plasma-solid interface. However, presently often a fundamental understanding of them is missing, so most technological applications are being developed via trial and error. The reason is that the physical processes at the interface of a low-temperature plasma and a solid are extremely complex, involving a large number of elementary processes in the plasma, in the solid as well as fluxes across the interface. An accurate theoretical treatment of these processes is very difficult due to the vastly different system properties on both sides of the interface: Quantum versus classical behavior of electrons in the solid and plasma, respectively; as well as the dramatically differing electron densities, length and time scales. Moreover, often the system is far from equilibrium. In the majority of plasma simulations surface processes are either neglected or treated via phenomenological parameters such as sticking coefficients, sputter rates or secondary electron emission coefficients. However, those parameters are known only in some cases and with very limited accuracy. Similarly, while surface physics simulations have often studied the impact of single ions or neutrals, so far, the influence of a plasma medium and correlations between successive impacts have not been taken into account. Such an approach, necessarily neglects the mutual influences between plasma and solid surface and cannot have predictive power. In this paper we discuss in some detail the physical processes of the plasma-solid interface which brings us to the necessity of coupled plasma-solid simulations. We briefly summarize relevant theoretical methods from solid state and surface physics that are suitable to contribute to such an approach and identify four methods. The first are mesoscopic simulations such as kinetic Monte Carlo and molecular dynamics that are able to treat complex processes on large scales but neglect electronic effects. The second are quantum kinetic methods based on the quantum Boltzmann equation that give access to a more accurate treatment of surface processes using simplifying models for the solid. The third approach are simulations of surface process that are based on density functional theory (DFT) and time-dependent DFT. The fourths are nonequilibrium Green functions that able to treat correlation effects in the material and at the interface. The price for the increased quality is a dramatic increase of computational effort and a restriction to short time and length scales. We conclude that, presently, none of the four methods is capable of providing a complete picture of the processes at the interface. Instead, each of them provides complementary information, and we discuss possible combinations.

Keywords： plasma physics     surface science     plasma-surface modeling     DFT     nonequilibrium Green functions    

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An integrated model for structure optimization and technology screening of urban wastewater systems

Yue HUANG,Xin DONG,Siyu ZENG,Jining CHEN

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 6,   Pages 1036-1048 doi: 10.1007/s11783-015-0792-z

Abstract: environmental protection, economic efficiency, and sustainability of urban wastewater systems requires an integratedmodeling of subsystems and a synthetic evaluation of multiple objectives.In this study, a multi-objective optimization model of an integrated urban wastewater system was developed

Keywords： urban wastewater system     integrated modeling     multi-objective optimization     non-dominated sorting genetic    

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Development of an integrated modeling system for improved multi-objective reservoir operation

Lei WANG, Cho Thanda NYUNT, Toshio KOIKE, Oliver SAAVEDRA, Lan Chau NGUYEN, Tran van SAP,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 1,   Pages 47-55 doi: 10.1007/s11709-010-0001-x

Abstract: Reservoir is an efficient way for flood control and improving all sectors related to water resources in the integratedFor improved multi-objective reservoir operation, an integrated modeling system has been developed byThe new integrated modeling system has been tested in the Da River subbasin of the Red River and showedThird, the new integrated modeling system was evaluated by optimizing the operation rule of the Hoa Binh

Keywords： distributed biosphere hydrological model (WEB-DHM)     optimization     multi-objective reservoir     the Red River basin    

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Fully integrated approach: an alternative solution of coupling a GIS and diffuse pollution models

S. LIU,R.E. BRAZIER,A. L. HEATHWAITE,W. LIU

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 4,   Pages 616-623 doi: 10.1007/s11783-013-0589-x

Abstract: visualization and analysis of spatially referred information, GIS has been recognized as a method to aid the modelingA prototype of fully integrated system is developed in this paper.Differences in applicability of loose coupling, tight coupling and fully integrated approaches are addressedIt is concluded that the fully integrated approach can avoid tanglesome data exchange and routine execution

Keywords： diffuse pollution     GIS     modeling     nutrients     phosphorus    

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Dymola-based multi-parameters integrated optimization for high speed transfer system of LED chip sorter

Jie OUYANG, Bin LI, Shihua GONG

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 2,   Pages 118-126 doi: 10.1007/s11465-013-0253-y

Abstract: In current work, an integrated optimization method was carried out to solve this problem, in which themultiple control parameters optimization, modeling and simulation were included, i.e., a multi-domainBased on this model, the searching area of the key control parameters was narrowed by performing integrated

Keywords： LED chip sorter     multi-domain modeling and simulation     parameter optimization     modelica language    

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An integrated approach for machine-learning-based system identification of dynamical systems under control

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 2,   Pages 237-250 doi: 10.1007/s11705-021-2058-6

Abstract: This work articulates an integrated system identification procedure for deriving black-box nonlinearand interaction features of both output and manipulated variables were trained on simulated data and integrated

Keywords： nonlinear model predictive control     black-box modeling     continuous-time system identification     machine    

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Energy saving design of the machining unit of hobbing machine tool with integrated optimization

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 3, doi: 10.1007/s11465-022-0694-2

Abstract: An integrated optimization model for reducing tool displacement and energy consumption is developed on

Keywords： energy saving design     energy consumption     machining unit     integrated optimization     machine tool    

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Applying an Integrated Systems Perspective to the Management of Engineering Projects

Simon P. Philbin

Frontiers of Engineering Management 2015, Volume 2, Issue 1,   Pages 19-30 doi: 10.15302/J-FEM-2015004

Abstract: Consequently, a management framework has been developed that is based on an integrated systems perspective

Keywords： integrated systems perspective     engineering projects     management    

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A novel decoupling approach to an integrated optical-fiber proximity sensor for robots

LIU Guixiong, LI Xiani

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 2,   Pages 164-167 doi: 10.1007/s11465-007-0027-5

Abstract: The structure and the working principle of a self-compensational integrated optical-fiber proximity sensor

Keywords： multiscale     different     self-compensational integrated     information     implementation    

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Optimal operation of integrated energy system including power thermal and gas subsystems

Frontiers in Energy 2022, Volume 16, Issue 1,   Pages 105-120 doi: 10.1007/s11708-022-0814-z

Abstract: As a form of hybrid multi-energy systems, the integrated energy system contains different forms of energyFocusing mainly on model building and optimal operation of the integrated energy system, in this paperThe power-thermal-gas integrated energy system used in the case study includes an IEEE-33 bus power systemcalculations and comparison of the results under different scenarios prove that the power-thermal-gas integrated

Keywords： integrated energy system     power-to-gas     dist-flow     piecewise linearization     alternating direction method    

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Title Author Date Type Operation

Energy internet technology: modeling, optimization and dispatch of integrated energy systems

Shilie WENG, Chenghong GU, Yiwu WENG

Journal Article

HOTSPOTS OF NUTRIENT LOSSES TO AIR AND WATER: AN INTEGRATED MODELING APPROACH FOR EUROPEAN RIVER BASINS

Journal Article

M-LFM: a multi-level fusion modeling method for shape−performance integrated digital twin of complex

Journal Article

A framework for an integrated unified modeling language

Mohammad ALSHAYEB,Nasser KHASHAN,Sajjad MAHMOOD

Journal Article

A modeling system for drinking water sources and its application to Jiangdong Reservoir in Xiamen city

Pengfei DU, Zhiyi LI, Jinliang HUANG

Journal Article

Towards an integrated modeling of the plasma-solid interface

Michael Bonitz, Alexey Filinov, Jan-Willem Abraham, Karsten Balzer, Hanno Kählert, Eckhard Pehlke, Franz X. Bronold, Matthias Pamperin, Markus Becker, Dettlef Loffhagen, Holger Fehske

Journal Article

An integrated model for structure optimization and technology screening of urban wastewater systems

Yue HUANG,Xin DONG,Siyu ZENG,Jining CHEN

Journal Article

Development of an integrated modeling system for improved multi-objective reservoir operation

Lei WANG, Cho Thanda NYUNT, Toshio KOIKE, Oliver SAAVEDRA, Lan Chau NGUYEN, Tran van SAP,

Journal Article

Fully integrated approach: an alternative solution of coupling a GIS and diffuse pollution models

S. LIU,R.E. BRAZIER,A. L. HEATHWAITE,W. LIU

Journal Article

Dymola-based multi-parameters integrated optimization for high speed transfer system of LED chip sorter

Jie OUYANG, Bin LI, Shihua GONG

Journal Article

An integrated approach for machine-learning-based system identification of dynamical systems under control

Journal Article

Energy saving design of the machining unit of hobbing machine tool with integrated optimization

Journal Article

Applying an Integrated Systems Perspective to the Management of Engineering Projects

Simon P. Philbin

Journal Article

A novel decoupling approach to an integrated optical-fiber proximity sensor for robots

LIU Guixiong, LI Xiani

Journal Article

Optimal operation of integrated energy system including power thermal and gas subsystems

Journal Article