检索结果-内蒙古大学图书馆

EPU-CRIS International Conference on Science and Technology

作者： M. Powalko P. Komarnicki K. Rudion Z. A. Styczynski Otto-von-Guericke University of Magdeburg Magdeburg Germany Electric Power Systems Group of the Process and Plant Engineering Business Unit Fraunhofer Institute of Factory Operation and Automation Magdeburg Germany Chair of Electric Power Networks and Renewable Energy Sources Otto-von-Guericke University of Magdeburg Magdeburg Germany

This paper examines different aspects of power system observability and above all the placement of PMUs intended to make grids fully observable and thus improve state estimation. Different scenarios with varying numbers of PMUs are presented and analyzed. In addition, the results of dynamic simulations of partial grid synchronization highlight the benefits of accurately measured phase angles.

关键词： Phasor measurement units Observability Optimization Synchronization Voltage measurement Current measurement Power systems

来源：评论

学校读者我要写书评

暂无评论

THD reduction with grid synchronized inverter's power injection of renewable sources

THD reduction with grid synchronized inverter's power inject...

引用

2010 International Symposium on Power Electronics, Electrical Drives, Automation and Motion, SPEEDAM 2010

作者： Gorbe, Peter Magyar, Attila Hangos, Katalin M. Department of Electrical Engineering and Information Systems University of Pannonia 8200 Veszprém Hungary Process Control Research Group Computer and Automation Research Institute 1518 Budapest Hungary

ISBN: (纸本)9781424449873

A control method for small domestic power plants using renewable energy is described in this paper. This method is not only capable of optimizing the working point of the plant but also implements active power factor correction and lowers the extant harmonic distortion in the line. The novel element in the proposed complex controller structure is the upper harmonic controller that minimizes the amplitudes of the 3rd, 5th 7th, 9th, and the 11th upper harmonic component in the output voltage. The proposed controller has been investigated by simulation in Matlab environment, and as a result, substantial improvement of the output voltage and current waveform could be achieved. Robustness of the method against nonlinear loads has also been tested. 0 © 2010 IEEE.

关键词： Solar power generation

来源：评论

学校读者我要写书评

暂无评论

Dynamic modeling and model analysis of a large industrial synchronous generator

Dynamic modeling and model analysis of a large industrial sy...

引用

作者： Fodor, Attila Magyar, Attila Hangos, Katalin M. Department of Electrical Engineering and Information Systems University of Pannonia 8200 Veszprém Hungary Process Control Research Group Computer and Automation Research Institute HAS Budapest Hungary

ISBN: (纸本)9788070438657

A simple dynamic model of an industrial size synchronous generator operating in a nuclear power plant is developed in this paper based on first engineering principles. The constructed state-space model consists of a nonlinear state equation and a bi-linear output equation. It has been shown that the model is locally asymptotically stable with parameters obtained from the literature for a similar generator. The effect of load disturbances on the partially controlled generator has been analyzed by simulation using a traditional PI controller. It has been found that the controlled system is stable and can follow the set-point changes in the effective power well. The disturbance rejection of the controller is also satisfactory.

关键词： Disturbance rejection

来源：评论

学校读者我要写书评

暂无评论

Mass action realizations of reaction kinetic system models on various time scales

引用

Journal of Physics: Conference Series 2011年第1期268卷

作者： K M Hangos G Szederkényi Process Control Research Group Computer and Automation Reseach Institute Kende u. 13-17 H-1111 Budapest Hungary Department of Electrical Engineering and Information Systems University of Pannonia Egyetem u. 10 Veszprém Hungary

Complex chemical reaction networks often exhibit different dynamic behaviour on different time scales. A combined approach is proposed in this work for determining physically meaningful mass action realizations of complex chemical reaction networks that describe its dynamic behaviour on different time scales. This is achieved by appropriately reducing the detailed overall mass action kinetic scheme using quasi steady state assumptions fit to the particular time scale, and then searching for an optimal realization using mixed integer linear programing. Furthermore, the relationship between the properties (reversibility, deficiency, stability) of the obtained realizations of the same system on different time scales are also investigated and related to the same properties of the detailed overall model. It is shown that the reduced models obtained by quasi steady state assumptions may show exotic nonlinear behaviour, such as oscillations, when the original detailed is globally asymptotically stable. The proposed methods are illustrated by using a simple Michaelis-Menten type reaction kinetic example. The simplified versions of the well known Brusselator model have also been investigated and presented as a case study.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Service-orientation on behalf of self-configuration for the automation environment

Service-orientation on behalf of self-configuration for the ...

引用

Annual Conference of Industrial Electronics Society

作者： Henning Mersch Ulrich Epple Christian Kleegrewe Chair for Process Control Engineering RWTH Aachen University Aachen Germany Corporate Technology Intelligent Autonomous Systems Siemens AG Munich Germany

On current automation systems a device failure might lead to significant down times of a plant as well as man power to replace and - more important - to setup the replacement device. Since the physical replacement can't be circumvented, the setup procedure could be automatized as much as possible. This paper shows an approach based on a new automation system designed as a service-oriented architecture (SOA). Advantages of this service-orientation for the automation environment are described in detail. The presented choreography of services yields to a flexible, dynamic and scalable system like it is well known for today's distributed, information technology systems - e.g. grid computing. This approach is applied to the self-configuration scenario as a demonstration of the benefits and chances, which could be achieved by modeling automation systems based on the SOA principle. A prototype realizes the presented service-choreography using real-world's automation components.

关键词： Automation Service oriented architecture Prototypes Sensors Valves Memory

来源：评论

学校读者我要写书评

暂无评论

THD reduction with grid synchronized inverter’s power injection of renewable sources

THD reduction with grid synchronized inverter’s power injec...

引用

International Symposium on Power Electronics, Electrical Drives, Automation and Motion, SPEEDAM

作者： Péter Görbe Attila Magyar Katalin M. Hangos Department of Electrical Engineering and Information Systems University of Pannonia Veszprém Hungary Process Control Research Group Computer and Automation Research Institute Budapest Hungary

关键词： Power factor correction Costs Power generation Voltage control Harmonic distortion Robustness Nonlinear distortion Solar power generation Power supplies Inverters

来源：评论

学校读者我要写书评

暂无评论

Dynamic modeling and model analysis of a large industrial synchronous generator

Dynamic modeling and model analysis of a large industrial sy...

引用

International Conference on Applied Electronics, AE

作者： Attila Fodor Attila Magyar Katalin M. Hangos Department of Electrical Engineering and Information Systems University of Pannonia Veszprem Hungary Process Control Research Group Computer and Automation Research Institute Hungarian Academy of Sciences (ATOMKI) Budapest Hungary

关键词： Mathematical model Equations Synchronous generators Torque Windings Rotors

来源：评论

学校读者我要写书评

暂无评论

A Study of a Gun-Turret Assembly in an Armored Tank using Model Predictive control

A Study of a Gun-Turret Assembly in an Armored Tank using Mo...

引用

2009 American control Conference (ACC 2009)

作者： Gautam Kumar Pradeep Y. Tiwari Vincent Marcopoli Mayuresh V. Kothare Chemical Process Modeling and Control Center Department of Chemical Engineering Lehigh University Bethlehem PA 18015 U.S.A. Process Dynamics and Optimization group Bayer Technology Services Americas 8500 W Bay Rd Baytown TX 77523 U.S.A. General Dynamics Land Systems Sterling Hts. MI 48310 U.S.A.

ISBN: (纸本)9781424445233

Operation of the gun/turret system in a military tank is limited by several constraints some of which are posed by obstacles existing on the vehicle's own platform. These mechanical constraints acting as hard constraints can cause serious damage to the whole assembly if violated. A control strategy developed for such a system must avoid possible collision of the gun/turret system with these obstacles. We propose to use a MPC based control strategy, due to its inherent ability to handle constraints, for the deck clearance problem and evaluate its performance under operating conditions for a linear model of the tank. Matlab~R based MPCtoolbox is used to set up the MPC calculations for the gun/turret system. Simulations are performed to investigate and compare the performance of the controller under various deck constraint limits. It is shown that MPC is effective in addressing both the stabilization and deck clearance objectives.

关键词： Maximum Allowable Concentration control strategy Tanks belted distributed model predictive control nonlinear model predictive control Constraint Model predictive control Predictive control linear models Addressing assemblies Operating conditions vehicle controllers

来源：评论

学校读者我要写书评

暂无评论

Project neptune: Improved operation of water distribution networks

Project neptune: Improved operation of water distribution ne...

引用

Contemporary Topics in Ground Modification, Problem Soils, and Geo-Support - 2009 International Foundation Congress and Equipment Expo

作者： Savic, D.A. Boxall, J.B. Ulanicki, B. Kapelan, Z. Makropoulos, C. Fenner, R. Soga, K. Marshall, I.W. Maksimovic, C. Postlethwaite, I. Ashley, R. Graham, N. Centre for Water Systems University of Exeter Harrison Building North Park Road Exeter Devon EX4 4QF United Kingdom Pennine Water Group Dept. Civil and Struct. Eng. University of Sheffield Mappin St. Sheffield South Yorkshire S1 3JD United Kingdom De Montfort University Process Control-Water Software Systems Leicester United Kingdom Department of Engineering University of Cambridge Trumpington Street Cambridge CB2 1PZ United Kingdom Lancaster University Lancaster Environment Centre Lancaster Lancs LA1 4YQ United Kingdom Environmental and Water Resource Engineering Imperial College London South Kensington London SW7 2AZ United Kingdom University of Leicester University Road Leicester LE1 7RH United Kingdom

ISBN: (纸本)9780784410233

Water service providers (WSPs) in the UK have statutory obligations to supply drinking water to all customers that complies with increasingly stringent water quality regulations and minimum flow and pressure criteria. At the same time, the industry is required by regulators and investors to demonstrate increasing operational efficiency and to meet a wide range of performance criteria that are expected to improve year-on-year. Most WSPs have an ideal for improving the operation of their water supply systems based on increased knowledge and understanding of their assets and a shift to proactive management followed by steadily increasing degrees of system monitoring, automation and optimisation. The fundamental mission is, however, to ensure security of supply, with no interruptions and water quality of the highest standard at the tap. Unfortunately, advanced technologies required to fully understand, manage and automate water supply system operation either do not yet exist, are only partially evolved, or have not yet been reliably proven for live water distribution systems. It is this deficiency that the project NEPTUNE seeks to address by carrying out research into 3 main areas;these are: data and knowledge management;pressure management (including energy management);and the associated complex decision support systems on which to base interventions. The 3-year project started in April of 2007 and has already resulted in a number of research findings under the three main research priority areas (RPA). The paper summarises in greater detail the overall project objectives, the RPA activities and the areas of research innovation that are being undertaken in this major, UK collaborative study. Copyright 2009 ASCE.

关键词： Water quality

来源：评论

学校读者我要写书评

暂无评论

Project neptune: Improved operation of water distribution networks

Project neptune: Improved operation of water distribution ne...

引用

10th Annual Water Distribution systems Analysis Conference, WDSA 2008

作者： Savic, D.A. Boxall, J.B. Ulanicki, B. Kapelan, Z. Makropoulos, C. Fenner, R. Soga, K. Marshall, I.W. Maksimovic, C. Postlethwaite, I. Ashley, R. Graham, N. Centre for Water Systems University of Exeter SECaM Harrison Building North Park Road Exeter Devon EX4 4QF United Kingdom Pennine Water Group Dept. Civil and Struct. Eng. University of Sheffield Mappin Building Mappin St. Sheffield South Yorkshire S1 3JD United Kingdom De Montfort University Process Control - Water Software Systems Leicester United Kingdom Department of Engineering University of Cambridge Trumpington Street Cambridge CB2 1PZ United Kingdom Lancaster University Lancaster Environment Centre Lancaster Lancs LA1 4YQ United Kingdom Environmental and Water Resource Engineering Imperial College London South Kensington London SW7 2AZ United Kingdom University of Leicester University Road Leicester LE1 7RH United Kingdom

ISBN: (纸本)9780784410240

Water service providers (WSPs) in the UK have statutory obligations to supply drinking water to all customers that complies with increasingly stringent water quality regulations and minimum flow and pressure criteria. At the same time, the industry is required by regulators and investors to demonstrate increasing operational efficiency and to meet a wide range of performance criteria that are expected to improve year-on-year. Most WSPs have an ideal for improving the operation of their water supply systems based on increased knowledge and understanding of their assets and a shift to proactive management followed by steadily increasing degrees of system monitoring, automation and *** fundamental mission is, however, to ensure security of supply, with no interruptions and water quality of the highest standard at the tap. Unfortunately, advanced technologies required to fully understand, manage and automate water supply system operation either do not yet exist, are only partially evolved, or have not yet been reliably proven for live water distribution systems. It is this deficiency that the project NEPTUNE seeks to address by carrying out research into 3 main areas;these are: data and knowledge management;pressure management (including energy management);and the associated complex decision support systems on which to base interventions. The 3-year project started in April of 2007 and has already resulted in a number of research findings under the three main research priority areas (RPA). The paper summarises in greater detail the overall project objectives, the RPA activities and the areas of research innovation that are being undertaken in this major, UK collaborative study. ©ASCE 2009.

关键词： Water quality

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：