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Towards autonomous reconfiguration in distribution networks: An approach based on finite state automaton models

Towards autonomous reconfiguration in distribution networks:...

引用

International Conference in Energy and Sustainability in Small Developing Economies (ES2DE)

作者： Alena Košťálová Pedro M. S. Carvalho Marek Kubalčík Dep. of Computer and Communication Systems Tomas Bata University in Zlin Czech Republic Electrical Engineering and Computer Dep. Instituto Superior Tecnico Lisbon Portugal Department of Process Control Tomas Bata University in Zlin Czech Republic

The demand on distribution network reconfiguration abilities is increasing. This paper proposes a Finite State Automaton model of a distribution network that deals with topologically safe reconfiguration. Autonomous operation of distribution networks can be designed, analysed and implemented in day-to-day operation with the aid of these automata: through supervisory control. Two approaches to supervisor design are proposed. One for the normal operating mode and the other for the contingency mode. Simple and comprehensive examples illustrate the approaches.

关键词： Switches Automata Power cables Substations Electronic mail Power system reliability

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Photovoltaic system modeling and simulation

Photovoltaic system modeling and simulation

引用

2017 IEEE International Conference on Industrial Technology, ICIT 2017

作者： Mendalek, N. Al-Haddad, K. Notre Dame University Dep. of Electrical Computer and Communication Engineering Zouk Mosbeh Lebanon Canada Research Department in Energy Conversion and Power Electronics CRC-ECPE École de Technologie Supérieure 1100 Notre-Dame Ouest MontréalQCH3C 1K3 Canada

ISBN: (纸本)9781509053209

This paper presents the modeling and simulation of a photovoltaic (PV) system. The equations governing the operation of the one-diode equivalent model are developed and the identification of the model parameters is performed through MATLAB script. The system studied encompasses a commercial PV panel, a dc-dc boost power converter, a battery and a dc load. The boost converter is controlled using voltage error PID compensator which has an input reference voltage computed by perturb-and-observe (P&O) maximum power point tracking (MPPT) technique. The system is simulated in MATLAB/Simulink environment for different irradiation levels and PV module temperature values. The control strategy is also validated in presence of rapidly varying irradiation conditions. © 2017 IEEE.

关键词： MATLAB

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Photovoltaic System Modeling and Simulation

Photovoltaic System Modeling and Simulation

引用

International Conference on Industrial Technology

作者： N. Mendalek K. Al-Haddad Notre Dame University Dep. of Electrical Computer & Communication Engineering Canada Research Chair in Energy Conversion and Power Electronics CRC-ECPE Ecole de Technologie Superieure

ISBN: (纸本)9781509053216

关键词： photovoltaic (PV) systems dc-dc boost converter MPPT perturb-and-observe (P&O) algorithm MATLAB

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A PTC Scheme for Internet of Things: Private-Trust-Confidentiality

A PTC Scheme for Internet of Things: Private-Trust-Confident...

引用

International Conference on Advanced Information Networking and Applications Workshops (AINAW)

作者： Chih-Hsueh Lin Wen-Shyong Hsieh Fu Mo Ming-Hao Chang Dep. of Computer and Communication Shu-Te University Taiwan Dep. of Computer Science and Engineering National Sun Yat-sen University Taiwan Dep. of Computer Science Guangdong University of Science and Technology Dongguan China

ISBN: (纸本)9781509024629

Privacy, trust and confidentiality are the main issues of sensor layer in Internet of Things (IOT). In sensor layer, the sensing information must be transmitted from sensor node to gather node by multiple hopping. Every sensor node will be the sender and the relay node to forward the sensing information sent by other nodes. In this paper, BS embeds S+1 secret into the keys that are derived from the real identity of sensor node, to be as the private secret keys for every sensor node. One of the secret is the common secret that is owned by all sensor nodes, the rest S secretes are the random secret used for making mutual trust. Based on the secret index set and private secret keys, we propose a mutual trust method to explore the trust types and the pairing value among the sensor nodes without any negotiating process. To deny the right of malicious nodes to make trust with other nodes, we involve a group key to hash the secret index set to do making trust and pairing value mutually. Based on the trust types and the pairing values, the sensor nodes can set a secure path to deliver the sensing information to base station.

关键词： Indexes Public key Wireless sensor networks Radiation detectors Broadcasting Internet of things

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A CMOS active delay line using injection-locking technique

A CMOS active delay line using injection-locking technique

引用

URSI Asia-Pacific Radio Science Conference (URSI AP-RASC)

作者： Kang-Chun Peng Chan-Hung Lee Tai-Hsuan Tsai Dep. Computer and Communication Engineering National Kaohsiung First Univ. of Science and Technology Kaohsiung Taiwan Dep. RF Research aed Development Regatron Corporation Taipei Taiwan

ISBN: (纸本)9781467399838

This work develops a CMOS active delay line for microwave CW signals. The novel active delay line is mainly based on an injection-locking (IL) technique. The delay of the input signal is linear adjusted with various injection conditions. Comparing with conventional passive or active delay lines, the proposed active delay line has a wider delay tuning range and a higher gain. The implemented CMOS delay line achieves a wide operating range of 2 ~ 2.6 GHz with very wide delay tuning range from 45~220 ns. The power consumption is lower than 7.2 mW.

关键词： Delay lines Delays Meteorology Phase noise Meteorological radar Noise measurement

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Nonlinear control of three-phase three-level four-wire NPC converter

Nonlinear control of three-phase three-level four-wire NPC c...

引用

IEEE International Conference on Industrial Technology (ICIT)

作者： A. Missanda K. Al-Haddad N. Mendalek Energy Conversion and Power Electronics CRC-ECPE École de Technologie Supérieure Montréal QC Canada Dep. of Electrical Computer & Communication Engineering Notre Dame University Zouk Mosbeh Lebanon

ISBN: (纸本)9781467380768

This paper presents a new approach of input-output feedback linearization control applied to the three-phase three-level four-wire neutral point clamped (NPC) converter. Under the proposed control strategy, the NPC converter demonstrates the capability to achieve simultaneously two tasks. The first task is to operate as a nonpolluting rectifier by regulating and nearly equalizing the two dc capacitor voltages while providing power to the dc loads. It is worthy of note that the voltage imbalance between the upper and lower capacitors and the neutral current represent a well-known problem in the three-level NPC converters. As a second task the NPC converter will behave as a shunt active power filter (SAPF) to compensate current harmonics, unbalances and reactive power produced by a combination of single-phase and three-phase nonlinear loads connected at the point of common coupling on the grid. The multivariable state space model of the NPC converter in the dq0 synchronous reference frame is used to design the nonlinear controller which is based on the input-output feedback linearization. It is shown that the model zero-dynamics is asymptotically stable ensuring the local stability of the internal dynamics. The proposed control strategy applied to the NPC converter is verified by computer simulations. The system stability is confirmed under severe dynamic changes in the operation conditions. The results of conducted simulations validate the viability and effectiveness of the NPC converter to maintain grid side currents balanced and near sinusoidal with unity displacement power factor. The simulation results also confirm the capability of the NPC converter to stabilize the dc voltages while supplying unbalanced dc loads.

关键词： Rectifiers Voltage control Load modeling Harmonic analysis Power harmonic filters Power system stability Capacitors

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Large Scale Assessment of Ka/Q Band Atmospheric Channel Across Europe with ALPHASAT TDP5: The Augmented Network

Large Scale Assessment of Ka/Q Band Atmospheric Channel Acro...

引用

European Conference on Antennas and Propagation

作者： S. Ventouras R. Reeves E. Rumi F. Perez-Fontan F. Machado V. Pastoriza A. Rocha S. Mota F. Jorge A.D. Panagopoulos A.Z. Papafragkakis C.I. Kourogiorgas O. Fiser V. Pek P. Pesice M. Grabner A. Vilhar A. Kelmendi A. Hrovat D. Vanhoenacker-Janvier A. Graziani L. Quibus G. Goussetis STFC Rutherford Appleton Laboratory RAL Space Oxford UK spiros Escola de Enxe?aría de Telecomunicación University of Vigo Vigo Spain Instituto de Telecomunica??es/Dep. Elect. Telec. e Informática IT/DETI Aveiro Portugal School of Electrical and Computer Engineering National Technical University of Athens Athens Greece Institute of Atmospheric Physics ASCR Meteorological Dept. IAP Prague Czech Republic Czech Metrology Institute TESTCOM CMI Prague Czech Republic Department of Communication Systems Jozef Stefan Institute Ljubljana Slovenia ICTEAM Université catholique de Louvain Louvain-la-Neuve Belgium School of Engineering and Physical Sciences Heriot-Watt University Edinburg UK

ISBN: (纸本)9781509037421

The upcoming migration of satellite services to higher bands, namely the Ka- and Q-bands offers many advantages in terms of bandwidth, data rates and system capacity. However, it poses challenges as propagation effects introduced by the various atmospheric phenomena are particularly pronounced in these bands and can become a serious constraint in terms of system reliability and performance. This paper outlines the goals, organization and some first results of an ongoing large propagation campaign consortium formed across Europe under the supervision of the European Space Agency;the campaign, shall ultimately assist in the validation and development of channel models targeting these-bands. Finally, the consideration of diverse climatic conditions and elevation angles along with the evaluation of the frequency and spatio-temporal effects, shall support the development of Fading and Mitigation Techniques and their assessment using real data.

关键词： Europe Atmospheric measurements Satellites Atmospheric modeling Satellite broadcasting Antennas Q measurement

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CRC: Collaborative research and teaching testbed for wireless communications and networks 10

CRC: Collaborative research and teaching testbed for wireles...

引用

10th ACM International Workshop on Wireless Network Testbeds, Experimental Evaluation, and Characterization, WiNTECH 2016

作者： Hanna, Samer S. Guirguis, Arsany Mahdi, Mahmoud A. El-Nakieb, Yaser A. Eldin, Mahmoud Alaa Saber, Dina M. Youssef, Moustafa Elnainay, Mustafa Y. El-Sherif, Amr A. Seddik, Karim G. Eng. Math. and Phys. Dept. Alexandria University Egypt Computer and Systems Eng. Dept. Alexandria University Alexandria Egypt Zagazig University Egypt ECE Virginia Tech. MENA United States Alexandria University Egypt Comp. and Comm. Eng. Dep. Alexandria University Egypt Wireless Research Center Egypt-Japan Uni. of Sci. and Tech. Egypt Nile University Giza Egypt Department of Electrical Engineering Alexandria University Alexandria Egypt Electronics and Communication Engineering Department American University in Cairo Egypt

ISBN: (纸本)9781450342520

The validation of wireless communications research, whether it is focused on PHY, MAC or higher layers, can be done in several ways, each with its limitations. Simulations tend to be simplified. Equipping wireless labs requires funding and time. Remotely accessible testbeds present a good option to validate research. The existing testbeds have gone a long way in building the infrastructure for managing and operating themselves. Yet, there is still space to improve the administration of resources whether it is nodes, frequency spectrum or storage space. In this work, we present the Collaborative Radio Cloud (CRC), a wireless testbed that enables web/remote access to facilitate research experiments in the field of wireless communications and networks. CRC is built upon the contributions made by current testbeds and incorporates new features to improve the user experience and ameliorate the management of resources. It enables multiple simultaneous users to coexist in the testbed by enforcing an elaborate node isolation policy. Software dedicated to the enforcement of spectrum assignment was developed to further ensure the isolation between concurrent users. A tool that is capable of realizing a desired topology using gain control was developed. CRC also operates a scheduler that optimizes node assignment to maximize testbed utilization. Enhancements to disk image saving are being developed to reduce the required storage. Other than research, CRC targets contributing to the education of wireless communications and networks by providing experiments and a web interface dedicated to students and instructors. © 2016 ACM.

关键词： Testbeds

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Using Combined Cellular Ad Hoc communications for Smart Environments

Using Combined Cellular Ad Hoc Communications for Smart Envi...

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International Conference on Advanced Information Networking and Applications Workshops (AINAW)

作者： Mimoza Durresi Arjan Durresi Leonard Barolli Kazunori Uchida Dep. of IT Mathematics and Statistics European University of Tirane Tirana Albania Dep. of Computer Science IUPUI Indianapolis USA Dep. of Information and Communication Engineering Fukuoka Institute of Technology Fukuoka Japan

ISBN: (纸本)9781479917761

We propose a Heterogeneous Multi Domain (HMD) architecture and protocols that uses ad hoc and cellular communications for enabling the exchange of information among users and smart environments. In particular, we focuss on the data communication and information diffusion related to tourism industry. Sensor's technology enables today the collection of various data related to the environment, such as temperature, location, and so on. This information can be delivered timely to users interacting with the environment. For example, a user might get direction in a building or in a park. Our architecture uses a network of gateways as an hierarchical virtual infrastructure to interconnect various network domains. Gateways are responsible for translation among different communication protocols, including routing, signalling, and security. HMD architecture is scalable, flexible and adaptive to QoS needs for interdomain communications. The protocol goal is to optimize such communications in terms of performance.

关键词： Logic gates Protocols Ad hoc networks Routing Smart phones Delays Wireless sensor networks

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Using Cellular Sensor Networks for Environment Protection

Using Cellular Sensor Networks for Environment Protection

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International Conference on Advanced Information Networking and Applications Workshops (AINAW)

ISBN: (纸本)9781479917761

Protecting the environment from many threats has become a priority worldwide. The existing sensor technology enables the continuous monitoring of various parameters related to environment status, such as air quality and many others. In this paper we propose a secure architecture based on cellular networks to collect such sensors' information in real time. The cell phones can interact with the cellular network and the sensor networks at the same time. This unique ability can be leveraged to provide better authentication and security. We propose an architecture for these networks along with protocols that can be used to establish security. In our architecture, we use gateways, as intermediate nodes that are able to interact with both the cell phones and the sensor nodes.

关键词： Cellular phones Logic gates Cryptography Authentication computer architecture Servers

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