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2009 IEEE Bucharest PowerTech: Innovative Ideas Toward the Electrical Grid of the Future

作者： Cerda Arias, J.L. Westermann, D. Department of Power System Faculty of Electrical Engineering and Information Technology Technology University of Ilmenau Gustav-Kirchhoff-St. 01 D-98693 Ilmenau Germany Technology University of Ilmenau Ilmenau Germany Institute of Electric Power and Control Technologies Ilmenau University of Technology Germany

ISBN: (纸本)9781424422357

A fundamental phase in the electrical systems planning is the temporal and spatial load forecasting. By changes in the structures of electricity markets and implementing policies for energy optimization, it is necessary to consider new variables that detail of better form the behaviorś forecasting and expansion of the electrical consumption to medium and long time. This work proposes a global load forecasting scheme to long-time, covering the topic temporal and spatial. The load forecasting proposes based in the influence of macroeconomic variables, implementing energy efficiency policies and the entry of new technologies that optimize their consumption. The proposed strategy combines load forecasting methods based on traditional methodologies with the implementation of the wavelets transformed and is validated through a sensitivity analysis for a real data set. Also, the model is applied to a real distribution system showing the potential for their use. © 2009 IEEE.

关键词： Energy efficiency

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Road traffic estimation with signal matching in mobile phone using large-size database

Road traffic estimation with signal matching in mobile phone...

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International Conference on Intelligent Transportation

作者： Sunisa Promnoi Poj Tangamchit Wasan Pattara-Atikom Department of Control System and Instrumentation Engineering King Mongkut's University of Technology Thonburi Bangkok Thailand National Electronics and Computer Technology Center Klong Luang Pathum Thani Thailand

This paper presents a road traffic estimation method using a GSM mobile phone as a probe. The technique relies on localization by signal strength matching. Our emphasis is on the unusual-large size of the database. We built a module that automatically collects location-signal with one second refresh rate and carried it along a test route to collect database. To handle big database, we additionally present a noise reduction algorithm, which eliminates bad data and compacts the database. For the localization algorithm, the fast nearest neighbor strategy is applied in the database matching to reduce computation time. The position estimations which formerly implemented noise reduction are compared with the ordinary results. Furthermore, we compared the computation time of the fast nearest neighbor algorithm to the normal method. The results show that the mobile phone positioning based on signal strength pattern matching can locate its location down to 63 meter accuracy.

关键词： Mobile handsets Databases Neurons GSM Global Positioning system Nearest neighbor searches Intelligent transportation systems Signal processing Roads Cellular phones

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Hybrid Ant system/Priority List Method for Unit Commitment Problem with Operating Constraints

Hybrid Ant System/Priority List Method for Unit Commitment P...

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IEEE International Conference on Industrial Technology (ICIT)

作者： K. Withironprasert S. Chusanapiputt D. Nualhong S. Jantarang S. Phoomvuthisarn Department of Electrical Power Engineering Faculty of Engineering Mahanakom University of Technology Bangkok Thailand Department of Computer Engineering and Satellite Research Center Faculty of Engineering Mahanakom University of Technology Bangkok Thailand Electrical Engineering Department Electrical and Control System Engineering Division Electricity Generating Authority of Thailand Bangkok Thailand Center of Excellence in Electrical Power Technology Chulalongkom University Bangkok Thailand

This paper presents a new method to solve unit commitment problem with operating constraints using a hybrid ant system/priority list method (HASP). The proposed methodology employs ant system in cooperating with the priority list method to find unit commitment solution as means of mutually combining the advantages of them in that a flexibility of the priority list method is reinforced, while AS algorithm can gain the benefit of using bias information for improving its performance during search process. The simulation results show that the proposed HASP is capable of obtaining satisfactory solution within reasonable computational time. Moreover, the proposed HASP can be extensively applied to handle the ramp rate limits and the operating reserve constraint, which are important for modern power system operation.

关键词： Transformers Load flow Admittance Mathematical model Power system modeling Medium voltage Mutual coupling Gaussian distribution Convergence Electronic mail

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Distributed state and unknown input estimation for freeway traffic flow models 10

Distributed state and unknown input estimation for freeway t...

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2009 10th European control Conference, ECC 2009

作者： Luspay, T. Kulcsar, B. Tettamanti, T. Varga, I. Bokor, J. Systems and Control Laboratory Computer and Automation Research Institute HAS Kende u. 13.-17 BudapestH-1111 Hungary Delft Center for System and Control Faculty of Mechanical Maritime and Materials Engineering Technical University of Delft Mekelweg 2 Delft Netherlands Department of Control and Transport Automation Budapest University of Technology and Economics Bertalan L. u. 2 BudapestH-1111 Hungary

ISBN: (纸本)9783952417393

The paper presents a joint state and unmeasured input estimation technique for a special class of nonlinear second order macroscopic traffic model. The freeway traffic system is transformed into a quasi and affine approximate Lin- ear Parameter Varying (LPV) form. Observer design technique is formulated using off-line optimization problem subjected to Linear Matrix Inequality (LMI) conditions, considering uncertain scheduling parameters. Furthermore, locally designed state estimators are interconnected to cover multiple freeway sections. The elaborated method is validated using real traffic measurements. © 2009 EUCA.

关键词： Linear matrix inequalities

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A study on the dynamic SOC compensation of an ultracapacitor module for the hybrid energy storage system

A study on the dynamic SOC compensation of an ultracapacitor...

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International Conference on Telecommunications Energy (INTELEC)

作者： Hyun-Sik Song Jin-Beom Jung Baek-Haeng-Lee Dong-Hyun Shin Byoung-Hoon Kim Yu-Cheol Park Hoon-Heo Hee-Jun Kim Department of Control and Instrumentation Engineering Korea University South Korea Electronic System Research and Development Center Korea Automotive Technology Institute South Korea Katech Cheonan KR Hanyang University Seongdong-gu Seoul KR

ISBN: (纸本)9781424424900

There have been a number of methods proposed for accurate state of charge (SOC) estimation of a battery as an important role of the battery management system (BMS). However, adequate test data of batteries and BMS development costs must be taken into consideration before application in actual vehicles. In addition, different algorithms need to be adopted according to the type of energy storage device and system configuration. For a mild-HEV hybrid energy storage device that uses the ultracapacitor module and the VRLA battery, the small capacitance of ultracapacitor module makes accurate SOC difficult. Accordingly, this paper introduces a dynamic SOC estimation algorithm capable of SOC compensation of the ultracapacitor module even when there is current input and output. A cycle profile that simulates the operating conditions of a mild-HEV was applied to a vehicle simulator to verify the effectiveness of the proposed algorithm based on testing.

关键词： Supercapacitors Energy storage Vehicle dynamics Testing State estimation Battery management systems Costs Battery powered vehicles Capacitance Heuristic algorithms

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Quasi-direct pole placement for time delay systems applied to a heat transfer set-up

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IFAC Proceedings Volumes 2009年第14期42卷 325-330页

作者： Tomáš Vyhlídal Wim Michiels Pavel Zítek Center for Applied Cybernetics Dept. of Instrumentation and Control Eng. Faculty of Mechanical Engineering Czech Technical University in Prague Technicka 4 166 07 Praha 6 Czech Republic Department of Computer Science Katholieke Universiteit Leuven Celestijnenlaan 200A B-3001 Heverlee Belgium

A method for quasi-direct pole placement is presented for a class of retarded time delay systems with a single control input. The pole placement is done in two steps. First, a number of dominant poles, smaller than the number of controller parameters, are directly assigned. This leads to constraints on the controller parameters. By using the singular value decomposition a simple parameterization of all controllers satisfying these constraints is obtained. In the second step, the remaining degrees of freedom in the parameter space are used to shift the remaining part of the system spectrum as far to the left as possible. It is done using an optimization procedure for nonsmooth, nonconvex functions. An extensive real-plant example is presented to demonstrate the application of the novel pole placement procedure.

关键词： Retarded system pole placement singular value decomposition nonsmooth optimization

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Optimization based synthesis of state derivative feedback controllers for retarded systems

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IFAC Proceedings Volumes 2009年第14期42卷 162-167页

作者： Paul McGahan Tomás Vyhlídal Wim Michiels Center for Applied Cybernetics Dept. of Instrumentation and Control Eng. Faculty of Mechanical Engineering Czech Technical University in Prague Technická 4 166 07 Praha 6 Czech Republic Department of Computer Science Katholieke Universiteit Leuven Celestijnenlaan 200A B-3001 Heverlee Belgium

The paper presents an optimization based algorithm for stabilizing retarded systems using a state derivative feedback controller. It is shown that an application of such a controller results in neutral dynamics of the closed loop system if small feedback delays occur. Therefore, the strong stability theory of neutral systems needs to be considered in the controller synthesis problem. The stabilization approach is based on minimizing the spectral abscissa of the closed loop system over the controller parameter space, subject to a strong stability constraint.

关键词： Time Delay State Derivative Feedback Strong Stability Delay Structure

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ARTIFICIAL DRIVER IN TRAFFIC SIMULATION

ARTIFICIAL DRIVER IN TRAFFIC SIMULATION

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14th International Conference on Soft Computing

作者： Sablik, V Honzik, P. Pohl, J. Polach, P. Jirsik, V Department of Control and Instrumentation Faculty of Electrical Engineering and Communication BUT Czech Republic

ISBN: (纸本)9788021436756

The article deals with artificial car driver in multi-agent traffic simulation. The entire concept of modular simulator is presented and its features are shown. Furthermore, the simplified model of vehicle dynamics is described, and the possibility of the usage of neural network as a driver simulation is drafted and analyzed. Models of neural artificial driver are presented, and evaluated.

关键词： Driver modeling traffic simulation neural network

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ECG ANALYSIS WITH USING OF NEURAL NETWORKS

ECG ANALYSIS WITH USING OF NEURAL NETWORKS

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14th International Conference on Soft Computing

作者： Pohl, J. Sablik, V. Polach, P. Jirsik, V. Department of Control and Instrumentation Faculty of Electrical Engineering and Communication BUT Czech Republic

The article deals with possibilities of automatically marking of pseudo-onhogonal ECG with using of neural models for parameters acquiring, and multi-layer self-organizing maps for automatic classification of stand-al... 详细信息

ISBN: (纸本)9788021436756

关键词： Electrocardiograms

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Optimal Design of Reactive Power PI Regulator for Hydro Power Plants

Optimal Design of Reactive Power PI Regulator for Hydro Powe...

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IEEE International Conference on control Applications

作者： Robert, Gerard Hurtado, Dominique Control System EDF Hydro Engineering Centre France Instrumentation and Control Department EDF National Nuclear Equipments Centre France

ISBN: (纸本)9781424422227

This paper presents an optimal PI controller for Automatic reactive power Regulators (AQR) which equip some French hydro power plants. The developed AQR algorithm participates to secondary voltage control following some control performance criteria required by the Transmission system Operator. controller parameters are calculated by solving a constrained nonlinear optimization that maximizes the robustness of the feedback control while incorporating the control performance specifications. That involves a 'worst case' design approach which takes into account modeling uncertainties and gain variations in the operating domain. Moreover a mere anti-windup strategy has been achieved in the AQR algorithm. Referring to Matlab simulations and measurements carried out on a 110 MVA pilot hydro unit, results are complying with demands.

关键词： Reactive power

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