Search results for "Communication systems"

showing 10 items of 120 documents

Oil filled MV/LV Power Transformer Behavior in Narrow Band Power Line Communication Systems

2012

The aim of this paper is to characterize oil-filled power transformers in the narrow-band power-line communication (PLC) frequency range of 50-150 kHz. A new model is proposed for such type of a transformer, in the aforementioned frequency range of interest, in order to study its influence on the signal transmission and to investigate the possibility that the PLC signal can cross the power transformer itself. The new model is simpler than those previously proposed in literature, and it can be used in the whole frequency range available for NB PLC according to the CENELEC EN 50065-1 A-band. In order to validate the model, simulation and measurement results are compared for four oil-filled po…

EngineeringFrequency-shift keyingbusiness.industryOverhead power lineElectrical engineeringAttenuation communication equipment testing communication systems narrow-band power-line communication (NB-PLC) power system communication power transformersCommunications systemlaw.inventionpower transformerspower system communicationnarrow-band power-line communicationPower-line communicationPower ratinglawElectromagnetic coilElectronic engineeringElectrical and Electronic EngineeringbusinessTransformerInstrumentationLow voltageSettore ING-INF/07 - Misure Elettriche E Elettronichecommunication equipment testing
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A New Low Cost Coupling System for Power Line Communication on Medium Voltage Smart Grids

2018

This paper proposes and verifies the performance of an innovative and low cost coupling system for power line communication (PLC) on medium voltage (MV) smart grids. The coupling system makes use of the capacitive divider of the voltage detecting systems (VDSs) to inject and receive the PLC signal. VDS are usually already installed in the MV switchboards of the major electrical manufacturer all over the world according to IEC 61243-5. VDS are used to detect the presence of the mains voltage to guarantee personnel safety. An interface circuit has been developed to be connected between the PLC transceiver and the VDS socket. In this way, the PLC signal can be coupled to the MV network without…

EngineeringGeneral Computer Sciencebusiness.industry020209 energycommunication systems; couplers; narrow band power line communication; Power system communication; power system communication; power system measurements; smart grids020208 electrical & electronic engineeringElectrical engineering02 engineering and technologyCapacitanceSignalPower-line communicationSmart gridModulationPower system communication communication systems couplers narrow band power line communication communication signal couplers power system communication power system measurements smart grids.0202 electrical engineering electronic engineering information engineeringElectronic engineeringcommunication signal couplersTransceiverbusinessElectrical impedanceSettore ING-INF/07 - Misure Elettriche E ElettronicheVoltage
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Service-oriented Architecture Projects in Practice: A Study of a Shared Document Service Implementation

2014

Published version of an article in the journal: Procedia Technology. Also available on Science Direct: http://dx.doi.org/10.1016/j.protcy.2014.10.017 This paper reports on a case study focusing on service-oriented architecture (SOA) projects in practice. The aim of these projects has been to develop a shared document service supporting different business divisions in a large Norwegian governmental institution. The research question guiding this research is: How are SOA projects carried out in practice? What are the challenges of developing shared services in service-oriented architecture? SOA projects are accompanied by a complex socio-technical system development environment. In the presen…

EngineeringKnowledge managementProcess managementOASIS SOA Reference Modelbusiness.industrycomputer.internet_protocolService-oriented architectureGeneral Earth and Planetary SciencesTime managementOrganizational unitVDP::Social science: 200::Library and information science: 320::Information and communication systems: 321Project managementArchitecturebusinessResearch questionCompetence (human resources)computerGeneral Environmental Science
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Measurement Issues for the Characterization of Medium Voltage Grids Communications

2013

This paper is focused on the measurement issues and procedures for the characterization of medium voltage grids for narrowband power line communications (NB-PLCs), in the perspective of the use and integration of such technology into smart grids communication networks. The fundamentals are given for the characterization of the PLC channel, by means of noise and attenuation measurements. Suitable procedures are also developed for the characterization and modeling of the power system components in the frequency range of interest. Furthermore, the complete model of the PLC system is experimentally validated in a real case study.

EngineeringNoise measurementbusiness.industrycommunication equipmentElectrical engineeringNoise (electronics)Attenuation measurementPower (physics)power system communicationElectric power systemNarrowbandSmart gridtesting communication systemspower system measurements.Electronic engineeringElectrical and Electronic EngineeringbusinessAttenuation measurement communication equipment testing communication systems power system communication power system measurementsSettore ING-INF/07 - Misure Elettriche E ElettronicheInstrumentationCommunication channelVoltageIEEE Transactions on Instrumentation and Measurement
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Medium Voltage Smart Grid: Experimental Analysis of Secondary Substation Narrow Band Power Line Communication

2013

This paper is focused on the possibility of employing narrow band power line communication (PLC) in medium voltage (MV) distribution networks. The topic is investigated by means of both simulations and experimental tests, which were carried out in the distribution network of Ustica Island. In detail, a two-way MV communication was tested between two secondary substations connected by an MV cable power line. Each substation has a by-pass connection at MV bus-bars and an MV/LV oil filled power transformer. In this paper, the MV and the PLC systems under test are described and the experimental tests are presented, which were carried out to evaluate the parameters of the simulation model. The a…

EngineeringSwitched-mode power supplyPower system communicationPower line communicationsSmart gridPower transformersPower factorEquipment testingCommunication systemsSmart power gridsElectronic engineeringElectrical and Electronic EngineeringInstrumentationElectric power distributionbusiness.industryCommunicationElectrical engineeringAttenuationComputer simulationPower (physics)Power-line communicationElectric power transmissionPower system measurementCommunication equipment testingPower engineeringbusinessAttenuation communication equipment testing communication systems narrow band power line communication power system communication power system measurements smart gridsSettore ING-INF/07 - Misure Elettriche E ElettronicheVoltageIEEE Transactions on Instrumentation and Measurement
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Implementation of the ERI standard and Evaluation of Applications with several low-cost technologies

2008

The electronic registration and identification (ERI) systems allow carrying out a remote, secure and univocal identification of a vehicle through electronic devices. This paper presents the implementation of the ERI standard (ISO 24534 & 24535) in an API to develop applications. The implementation took into account the different components of the system to build the architecture of the identification system. Several applications have been developed in order to test this API with several low-cost technologies (Wifi, Bluetooth and RFID).

Engineeringbusiness.industryIdentification systemlaw.inventionBluetoothIdentification (information)lawWireless communication systemsEmbedded systemRadio-frequency identificationElectronicsbusinessIntelligent transportation systemAutomatic vehicle identification2008 11th International IEEE Conference on Intelligent Transportation Systems
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Narrowband power line communications for medium voltage smart grids

2014

The aim of the paper is to show how narrowband power line communications (NB-PLCs) can be a valid solution for medium voltage grids. Advantages and drawbacks of this solution are analyzed, starting from some experimental communication results, which were carried out on the medium power system networks of the islands of Ustica and Favignana, in the presence of the net voltage. Furthermore, some communication architectures and hardware prototypes based on NB-PLCs are proposed for different smart grids applications.

Engineeringbusiness.industrypower system measurements communication systems power system communication communication equipment testing narrow band power line communication smart gridsElectrical engineeringcommunication equipment testing communication systems narrow band power line communication power system communication power system measurements smart gridsLine (electrical engineering)Power (physics)Electric power systemSmart gridNarrowbandElectronic engineeringbusinessSettore ING-INF/07 - Misure Elettriche E ElettronichePhase-shift keyingVoltage
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Developing business advantages from the technological possibilities of enterprise information systems

2022

Published version of an article in the journal: International journal of information systems and project management. Also available from the publisher at: http://dx.doi.org/10.12821/ijispm020203 Open Access Organizations are increasingly implementing Enterprise Information Systems (EIS), and Enterprise Resource Planning (ERP) systems in particular. Despite the notable studies on the advantages of an EIS, many organizations are not satisfied with the benefits or advantages gained. At the same time, it is assumed that such systems with increasing innovations and technological enhancements would generate abundant business advantages, if organizations exploited these opportunities. The investig…

Engineeringlcsh:Management. Industrial managementInformation Systems and ManagementKnowledge managementVDP::Social science: 200::Economics: 210business.industryenterprise resource planning (ERP)Strategy and Managementtechnological possibilitiesSociomaterialityenterprise information systems (EIS)Management Information Systemssociomaterialityimbricationlcsh:HD28-70Information systemVDP::Social science: 200::Library and information science: 320::Information and communication systems: 321Project managementEnterprise information systembusinessInternational Journal of Information Systems and Project Management
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Development of a Coupling System for Medium Voltage Power Line Communication in the CENELEC A Frequency Band

2016

In this paper the performances of a new power line communication (PLC) coupling system for medium voltage (MV) smart grids are investigated in the CENELEC A frequency band (i.e. 3 - 95 kHz). The new coupling solution is based on the use of the capacitive divider of the voltage detecting system (VDS) as PLC coupler to the MV network. According to IEC 61243-5, VDS are worldwide used to reveal the presence of the mains voltage to ensure the safety of the operators. A proper interface circuit has been invented and patented to couple the PLC signal through the VDS. In this way no dedicated MV PLC coupler is required, thus avoiding the related costs of the coupler, of its installation, and those …

Engineeringpower system measurementFrequency band020209 energy02 engineering and technologyCapacitanceSignalCommunication systemspower system communication0202 electrical engineering electronic engineering information engineeringElectronic engineeringsmart gridscommunication signal couplersCouplingFrequency-shift keyingbusiness.industry020208 electrical & electronic engineeringElectrical engineeringnarrow band power line communicationpower system measurementsPower-line communicationSmart gridcommunication systemcommunication signal couplerbusinessSettore ING-INF/07 - Misure Elettriche E ElettronicheVoltage
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Back-Propagation Artificial Neural Network for ERP Adoption Cost Estimation

2011

Published version of a chapter in the book: Enterprise information systems, vol 220, part 2, 180-187. Also available from the publisher at: http://dx.doi.org/10.1007/978-3-642-24355-4_19 Small and medium size enterprises (SMEs) are greatly affected by cost escalations and overruns Reliable cost factors estimation and management is a key for the success of Enterprise Resource Planning (ERP) systems adoptions in enterprises generally and SMEs specifically. This research area is still immature and needs a considerable amount of research to seek solid and realistic cost factors estimation. Majority of research in this area targets the enhancement of estimates calculated by COCOMO family models.…

EstimationERP cost estimation neural networks SMEsCost estimateArtificial neural networkFactor costbusiness.industryCOCOMOComputer scienceMachine learningcomputer.software_genreRisk analysis (engineering)Key (cryptography)Information systemVDP::Social science: 200::Library and information science: 320::Information and communication systems: 321Artificial intelligencebusinesscomputerEnterprise resource planning
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