Search results for "power system monitoring"

showing 9 items of 9 documents

Real-Time Power Flow Monitoring and Control System for Microgrids Integration in Islanded Scenarios

2019

This article presents an enhanced system for real-time power flow monitoring and control (PFMC) for microgrids integration in medium-voltage (MV) distribution networks. The developed solution includes both system architecture and the monitoring and control algorithms, and it has low implementation and installation costs. It is based on the use of hardware and software solutions previously proposed by the authors, i.e., a distributed measurement, a control and communication architecture, and a supervisory control and data acquisition (SCADA) software, which have been enhanced and integrated for the considered application. The SCADA implements a load flow (LF) algorithm for real-time power fl…

Computer sciencepower distribution control020209 energyReal-time computingpower measurementload flow (LF) analysi02 engineering and technologyIndustrial and Manufacturing EngineeringEnergy storagelaw.inventionpower system monitoringSoftwareSCADAlaw0202 electrical engineering electronic engineering information engineeringElectrical and Electronic Engineeringbusiness.industry020208 electrical & electronic engineeringInversion (meteorology)supervisory control and data acquisition (SCADA) systemsmicrogridload flow (LF) analysisControl and Systems EngineeringSystems architectureAdvanced metering infrastructureMicrogridUnavailabilitybusinessSettore ING-INF/07 - Misure Elettriche E ElettronicheRemote controlIEEE Transactions on Industry Applications
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An Innovative Measurement Approach for Load Flow Analysis in MV Smart Grids

2016

This paper proposes a novel measurement procedure for load flow analysis in medium voltage (MV) smart grids. The new approach is based on power measurements at low voltage (LV) side of MV/LV distribution substations. Such measurements are carried out by means of power quality analyzers. If compared with the load flow methods based on measurements at the MV side, the proposed approach has a lower cost and it offers an equally reliable measurement system. The proposed algorithm takes the basic concept of the current summation backward/forward method; some modifications are introduced to use LV load powers measurements. To this aim, the MV/LV power transformer is properly modeled and taken int…

EngineeringGeneral Computer Science020209 energy02 engineering and technologyload flow analysispower system monitoring0202 electrical engineering electronic engineering information engineeringElectronic engineeringPower-flow studyMATLABSimulationcomputer.programming_languagebusiness.industrySystem of measurement020208 electrical & electronic engineeringAdvanced metering infrastructure load flow analysis power quality analyzer (PQA) power system measurements power system monitoring smart grid (SG).AC powerpower quality analyzer (PQA)power system measurementsPower (physics)smart grid (SG)Settore ING-IND/33 - Sistemi Elettrici Per L'EnergiaSmart gridAdvanced metering infrastructurebusinesscomputerLow voltageSettore ING-INF/07 - Misure Elettriche E ElettronicheVoltage
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A simplified approach for load flow analysis in MV smart grids based on LV power measurements

2017

This paper presents a simplified approach for load flow analysis in medium voltage (MV) distribution networks. It is a power summation Backward/Forward (B/F) algorithm, based on measurements of active and reactive powers at low voltage (LV) side of MV/LV distribution substations. The proposed solution allows achieving good accuracy, computational efficiency and fast convergence. In order to verify the algorithm performances, simulation studies are carried out in the case of a real test system, i.e. the distribution grid of Favignana Island (Mediterranean Sea, Italy). The compatibility between simulations results and power measurements at the MV bus bars of the generating substation shows th…

EngineeringBusbar020209 energyBiomedical EngineeringAdvanced metering infrastructure (AMI)Smart grid02 engineering and technologyload flow analysisControl theory0202 electrical engineering electronic engineering information engineeringElectronic engineeringPower-flow studyInstrumentationPower system monitoringbusiness.industry020208 electrical & electronic engineeringAC powerSmart gridPower system measurementSignal ProcessingLoad flow analysiAlgorithm designPower system measurementsDistribution gridPower quality analyzers (PQA)businessSettore ING-INF/07 - Misure Elettriche E ElettronicheLow voltageVoltage2017 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)
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LV Measurement Device Placement for Load Flow Analysis in MV Smart Grids

2016

This paper deals with the issue of measurement device placement for load flow analysis in medium-voltage (MV) distribution networks. The study is carried out using an innovative measurement algorithm for load flow analysis developed by the authors. It is based on low-voltage (LV) load power measurements applied on a backward/forward algorithm for the load flow resolution. The final aim is to identify the most suitable number and placement of the LV measurement points in order to limit the uncertainty on the power flow estimation to a target value. The proposed approach is based on the uncertainty evaluation of the estimated power flows; a sensitivity analysis is performed in order to assess…

Engineering020209 energy02 engineering and technologyPower factormeter placementpower system monitoringControl theorysmart grids0202 electrical engineering electronic engineering information engineeringElectronic engineeringpower measurementsPower-flow studySensitivity (control systems)Electrical and Electronic EngineeringInstrumentationbusiness.industry020208 electrical & electronic engineeringpower quality analyzer (PQA)power system measurementsPower (physics)Smart gridload flow (LF) analysisFlow (mathematics)Advanced metering infrastructure load flow (LF) analysis meter placement power measurements power quality analyzer (PQA) power system measurements power system monitoring smart grids.Advanced metering infrastructureMeasurement uncertaintyAlgorithm designbusinessSettore ING-INF/07 - Misure Elettriche E ElettronicheIEEE Transactions on Instrumentation and Measurement
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Un approccio semplificato per il calcolo del load flow nelle smart grids basato su misure distribuite in bassa tensione

2017

I sistemi di misura distribuiti sono alla base delle "smart distribution grids", ove la crescente presenza di generazione distribuita e sistemi di accumulo e la conseguente transizione verso sistemi attivi rendono necessarie funzionalità avanzate di monitoraggio, controllo e gestione delle reti. In tale contesto, un elemento essenziale è l'analisi dei flussi di potenza, che, com'è noto, può essere effettuata tramite algoritmi di load flow, noti il modello della rete e le potenze generate/assorbite nei vari nodi. Per la misura di tali grandezze sulla media tensione (MT), si possono utilizzare diversi strumenti (quali phasor measurement units, smart meters, power quality analyzers), che però …

Advanced metering infrastructure distributed measurement systems load flow power quality analyzer (PQA) power system measurements power system monitoring smart gridload flowsmart gridSettore ING-INF/07 - Misure Elettriche E Elettroniche
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Uncertainty evaluation of a Backward/Forward Load Flow algorithm for a MV smart grid

2015

This paper presents the uncertainty evaluation of an innovative measurement algorithm for load flow analysis in MV distribution networks. The measurement procedure is based on Low Voltage (LV) load power measurements applied on a Backward/Forward (B/F) algorithm for the Load Flow (LF) resolution. Furthermore, in the procedure a three phase voltage measurement at the MV generating substation bus-bars is also considered. The accuracy analysis of the LF algorithm is performed in the case of a real load condition in the distribution grid of Ustica island, Italy. The analysis takes into account the uncertainty of the measurement instruments at the LV side of each secondary substation power trans…

Engineeringbusiness.industryPower system monitoringPower factorSmart gridAC powerLoad flow analysisPower quality analyzerConstant power circuitPower (physics)Settore ING-IND/33 - Sistemi Elettrici Per L'EnergiaPower system measurements load flow analysis power system monitoring smart grid power quality analyzer advanced metering infrastructureMeasurement uncertaintyAdvanced metering infrastructureVoltage regulationPower-flow studyPower system measurementsbusinessSettore ING-INF/07 - Misure Elettriche E ElettronicheLow voltageAlgorithm
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Uncertainty evaluation in load flow analysis: real MV distribution networks case studies

2018

This work investigates the measurement uncertainty impact on load flow analysis in medium voltage (MV) distribution networks. The considered algorithm is a simplified load flow algorithm (LFA), developed by authors, which is based on the load power measurements at each secondary substation and one voltage measurement at the slack bus (i.e. the voltage at the MV bus bars of the primary substation). In the viewpoint of a real implementation, to reduce monitoring system costs, the LFA makes use of low voltage (LV) load power measurements for all the substations except those of MV users, where MV transducers are usually already installed. The uncertainties on LFA input quantities (load powers a…

power system monitoringPower system measurementpower quality analyzers (PQA)load flow analysismart gridadvanced metering infrastructure (AMI)Settore ING-INF/07 - Misure Elettriche E Elettroniche
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Measurement uncertainty impact on simplified load flow analysis in MV smart grids

2018

This work is focused on the measurement uncertainty impact on load flow analysis in medium voltage (MV) distribution networks. In more detail, the paper presents the uncertainty evaluation of a simplified load flow algorithm, which is based on the load power measurements at each secondary substation and one voltage measurement at the slack bus (i.e. the voltage at the MV bus bars of the primary substation). To reduce the costs of the monitoring system, the load flow algorithm makes use of LV load power measurements for all the substations except those of MV users, where MV transducers are usually already installed. The uncertainties on the algorithm input quantities (load powers and slack b…

MonitoringBusbar020209 energyMonte Carlo methodElectric load flowAdvanced metering infrastructure (AMI)02 engineering and technologySmart gridUncertainty evaluationElectric power system measurementPower quality analyzerSlack buspower system monitoringElectric power transmission networksControl theory0202 electrical engineering electronic engineering information engineeringpower quality analyzers (PQA)MedicinePower-flow studyload flow analysiSafety Risk Reliability and QualityInstrumentationbusiness.industryElectric power distributionPower (physics)Smart gridPower system measurementMeasurement uncertaintybusinessSettore ING-INF/07 - Misure Elettriche E ElettronicheVoltage
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Un metodo basato su misure distribuite in bassa tensione per il calcolo del load flow nelle smart grids

2016

Con la diffusione della generazione distribuita nei sistemi elettrici di distribuzione e la conseguente loro transizione verso reti attive, è diventato essenziale disporre di opportuni sistemi per il monitoraggio, il controllo e la gestione delle retistesse. In questo ambito, l'unità GMEE di Palermo, in collaborazione con l'ISSIA-CNR e la STMicroelectronics, da alcuni anni si occupa dello sviluppo di sistemi di misura e comunicazione per lo sviluppo delle "smart distribution grids". In particolare, per quanto riguarda il monitoraggio della rete, lo studio è stato focalizzato sull'analisi dei flussi di potenza, che, noti il modello della rete e le potenze generate o assorbite nei vari nodi, …

Advanced metering infrastructure load flow analysis power quality analyzer (PQA) power system measure- ments power system monitoring smart gridsmart gridSettore ING-INF/07 - Misure Elettriche E Elettroniche
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