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A Long-Term Multi-objective Planning Tool for Distributed Energy Resources

A Long-Term Multi-objective Planning Tool for Distributed En...

引用

IEEE PES Power Systems Conference and Exposition, PSCE

作者： E. Haesen J. Driesen R. Belmans ESAT-ELECTA Belgium

Present changes in the operation of distribution grids call for a new way in which grid modifications are planned. This paper gives an overview of the changes on production and demand side as well as possible ways of planning the integration of distributed energy resources. Multiple objectives are often conflicting. An evolutionary algorithm is used to search for fit topologies of distributed resources and analyze the possible trade-offs

关键词： Energy resources Cost function Production Power generation economics Optimization methods Voltage density estimation robust algorithm Distributed power generation Power generation Mesh generation

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Distributed Energy Resources and Renewable Energy in Distribution Systems: Protection Considerations and Penetration Levels

Distributed Energy Resources and Renewable Energy in Distrib...

引用

2008 IEEE Industry Applications Society Annual Meeting (IAS 2008), vol.4

作者： Keith Malmedal Ben Kroposki P. K. Sen NEI Electric Power Engineering Inc. Arvada CO USA National Renewable Energy Laboratory Golden USA Colorado Schml of Mines Golden CO USA

Distributed Energy Resources (DER) including renewables of various designs and ratings have become increasingly common in the last decade. Many States and the Federal government have passed Laws mandating a certain amount of energy be generated using renewables and/or alternative fuels that lend themselves to smaller power plants being connected to the utility system at the distribution level. Power electronics have also made substantial progress allowing inverter-connected smaller power plants with diverse types of fuels to be interconnected with the grid. Optimization of overall electrical system performance at the distribution level is very important for the long-term economic viability of DER systems. It is becoming more important to understand the integration of these systems with the existing electric power system. This paper will address the system integration and utilization issues associated with DER including renewables and will examine protection considerations and penetration limits for DER in the existing distribution systems.

关键词： Energy resources Renewable energy resources Protection density estimation robust algorithm Power generation Fuels US Government Power electronics Power system interconnection System performance

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Coordinated control of Distributed Generation to balance line powers

Coordinated control of Distributed Generation to balance lin...

引用

IEEE International Conference on System of Systems Engineering (SoSE)

作者： Karina Munoz-Ramos Kevin Wedeward Department of Electrical Engineering New Mexico Technology Socorro NM USA Department of Electrical Engineering New Mexico Instititute of Mining and Technology Socorro New Mexico USA

This paper presents an approach based upon state feedback to coordinate distributed energy resources (DER) across unbalanced phases of a power distribution system. The objective is to control the resources such that characteristics are balanced among phases making a more desirable load from the perspective of the transmission system. Example results are provided for a distribution system with inverter-connected generation. Active power setpoints are taken as the control variables for distributed generation (DG) independently connected to the three phases. State feedback control based upon linearization of a differential-algebraic equation (DAE) model is used to control (balance) demand on the three phases. Simulation results are provided to demonstrate the effectiveness of the approach.

关键词： Distributed control Control systems Power system modeling density estimation robust algorithm Voltage control State feedback Power system reliability Nonlinear equations Energy resources Power distribution

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Speech and speaker recognition for home automation: Preliminary results

Speech and speaker recognition for home automation: Prelimin...

引用

Conference on Speech Technology and Human-Computer Dialogue, SpeD

作者： Michel Vacher Benjamin Lecouteux Javier Serrano Romero Moez Ajili François Portet Solange Rossato CNRS LIG Grenoble France LIG Univ. Grenoble Alpes Grenoble France GETALP Team Grenoble Laboratoire d'Informatique de Grenoble France

In voice controlled multi-room smart homes ASR and speaker identification systems face distance speech conditions which have a significant impact on performance. Regarding voice command recognition, this paper presents an approach which selects dynamically the best channel and adapts models to the environmental conditions. The method has been tested on data recorded with 11 elderly and visually impaired participants in a real smart home. The voice command recognition error rate was 3.2% in off-line condition and of 13.2% in online condition. For speaker identification, the performances were below very speaker dependant. However, we show a high correlation between performance and training size. The main difficulty was the too short utterance duration in comparison to state of the art studies. Moreover, speaker identification performance depends on the size of the adapting corpus and then users must record enough data before using the system.

关键词： Aging Microphones Training Acoustics density estimation robust algorithm Speech Lighting

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Encoding distributed search spaces for virtual power plants

Encoding distributed search spaces for virtual power plants

引用

IEEE Symposium on Computational Intelligence Applications In Smart Grid (CIASG)

作者： Jörg Bremer Barbara Rapp Michael Sonnenschein Department of Computing Science Carl von Ossietzky University슠of슠Oldenburg Oldenburg Germany

The optimization task in many virtual power plant (VPP) scenarios comprises the search for appropriate schedules in search spaces from distributed energy resources. In scenarios with a decoupling of plant modeling and plant control, these search spaces are distributed as well. If merely the controller unit of a plant knows about the subset of operable schedules that are allowed to be considered by the central scheduling unit, then these sets have to be effectively communicated. We discuss an approach of learning the envelope that separates operable from non-operable schedules inside the space of all schedules by means of support vector data description. Then, only the comparatively small set of support vectors has to be transmitted as a classifier for distinguishing schedules during optimization. We applied this approach to simulated VPP.

关键词： Schedules density estimation robust algorithm Support vector machines Cogeneration Optimization Mathematical model Training

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Optimal dispatch of Distributed Energy Resources included in a Virtual Power Plant for participating in a day-ahead market

Optimal dispatch of Distributed Energy Resources included in...

引用

International Conference on Clean Electrical Power (ICCEP)

作者： M. Peikherfeh H. Seifi M. K. Sheikh-El-Eslami Faculty of Computer and Electrical Engineering Tarbiat Modares University Tehran Iran

Variability and uncertainty are intrinsic characteristics of power systems. On the other hand, high penetration of Distributed Energy Resources (DERs), especially variable output generations such as winds and photovoltaic systems, exceeds the expected variability and uncertainty of a power system. In this situation, the integration of a DER portfolio can be done following the concept of aggregation of these resources. If several DER units are linked together and are operated as one unit this concept is often called a Virtual Power Plant (VPP). The aim of this paper is to carry out an optimal dispatch that the operator of a VPP is able to maximize its profit in consideration of the relevant technical and economical constraints as well as some existing uncertainties. The profit maximization problem also considers demand side bidding for dispatchable loads, Renewable Obligation Certificate (ROC) for renewable based Distributed Generations (DGs) and the cost related to Use of System (UoS) charges to Distribution System Operator (DSO). The simulation results for a typical system demonstrate the effectiveness of the method.

关键词： density estimation robust algorithm Power generation Forecasting Uncertainty Biological system modeling Load modeling Energy resources

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All-optical switching in a vertical coupler space switch employing photocarrier-induced nonlinearity

All-optical switching in a vertical coupler space switch emp...

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Conference on Lasers and Electro-Optics (CLEO)

作者： R. Varrazza S. Yu M. Owen I. Khrushchev R.V. Penty I.H. White S.V. Dewar University of Bristol Bristol Bristol GB

ISBN: (纸本)1557526346

Summary form only given. Nonlinear optical switches will be key devices in order to realize all-optical signal processing in order to meet increasing data speed requirements in future optical communications systems. Of various nonlinear optical effects, the photocarrier-induced band edge nonlinearity in semiconductor quantum wells has relatively large amplitude with a time constant in the 10-ps range depending on the carrier sweep-out time. It has been shown theoretically that a device based on such an effect and a vertical coupler structure can make an effective nonlinear optical switch. In the paper a new form of all-optical switch employing photocarrier-induced nonlinearity based on a vertical coupler structure, which allows high switch contrast, is reported.

关键词： Switches Couplings density estimation robust algorithm

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Reality in certification of IFE and telephone equipment

Reality in certification of IFE and telephone equipment

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Conference on Digital Avionics Systems (DASC)

作者： A.M. Christofferson R.L. Triplett Boeing Cabin Syst. Seattle WA USA Boeing Cabin Systems-Rockwell IFE DER Seattle WA USA

This paper provides an overview of the process followed by Boeing to certify In-Flight Entertainment (IFE) and Telecommunication Systems. It is not intended to provide an in-depth description of the certification proc... 详细信息

关键词： Certification Telephone equipment Airplanes FAA density estimation robust algorithm Manufacturing processes Maintenance engineering Aircraft manufacture Meeting planning Testing

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Realizing a Smart MicroGrid - Pioneer Canadian Experience

Realizing a Smart MicroGrid - Pioneer Canadian Experience

引用

IEEE Power and Energy Society General Meeting

作者： Mohamed Zakaria Kamh Reza Iravani Tarek H.M. EL-FoulyMember Hatch Ltd. 2800 Speakman Drive Mississauga Ontario L5K 2R7 Canada Edward S. Rogers Sr. Department of Electrical and Computer Engineering University of Toronto Toronto Ontario M4Y 1R5 Canada CanmetENERGY Natural Resources Canada 1615 Lionel-Boulet Blvd. P.O. 4800 Varennes Quebec Canada J3X 1S6

ISBN: (纸本)9781467327275

This paper outlines the main accomplishments towards realizing a Smart Microgrid Testbed at the British Columbia Institute of Technology (BCIT), Burnaby, BC, Canada. The paper describes a methodology to optimally select, site, size, control, and integrate distributed generation and storage units with the existing Campus power system. The proposed approach enables optimal operation of the Campus power system in both grid-tied and autonomous modes of operation. Two control strategies are selected, implemented, and tested to permit the safe and efficient integration and operation of the onsite DER units into the Campus power system during the grid-tied and islanded modes of operation. Moreover, a smart and accurate fault detection, isolation, and service restoration (FDISR) algorithm is proposed and implemented, based on a bidirectional communication infrastructure, to support the Campus power system operation in the presence and absence of the utility bus. Finally, the results of one the conducted case studies are reported and analyzed to evaluate the impacts of the proposed power management and control strategies on the performance of the BCIT Microgrid as well as the interaction between different on-site DER units and the utility.

关键词： Distributed Energy Resources Smart grid Microgrid Dual-Mode Control MICRO-GRID control strategy power systems storage units Optimal operation density estimation robust algorithm Surgery distributed power generation British Columbia

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robust multi-objective optimal dispatch of distributed energy resources in micro-grids

Robust multi-objective optimal dispatch of distributed energ...

引用

Power Tech Conference

作者： M. L. Di Silvestre G. Graditi M. G. Ippolito E. Riva Sanseverino G. Zizzo DIEET Universita di Palermo Viale delle Scienze Palermo Italy ENEA Portici Italy

Modern distribution systems are implemented through micro grids: small power networks where generation is close to consumption and ICT supports the coordinated management of the different energy resources. In such systems, the central control unit manages energy dispatch from the different sources according to different criteria (technical, economical and environmental) and takes care of tertiary regulation. Such optimization for the tertiary regulation is performed with a time interval that typically is of 24 hours. This is due to the fact that it is necessary to take into account the charge and discharge cycles of storage systems. On the other hand, such long time leads to large errors in the prediction of energy generation and consumption. In this paper an algorithmic approach allows to overcome this problem. It is indeed possible to integrate uncertainty within the problem formulation attaining a dispatch plan for all the energy sources that will not lead to constraints violations even if the objective function's variables and parameters are affected by uncertainty. The results on a medium size system show the ease and effectiveness of the proposed approach.

关键词： robustness Uncertainty density estimation robust algorithm Production Batteries Optimization Photovoltaic systems

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