0000000000337834

AUTHOR

Massimo Bongiorno

showing 8 related works from this author

A Procedure for the Producibility Curve Identification of a Dish-Stirling Plant, Starting from Experimental Data

2019

This article presents a procedure for the producibility curve identification of a dish-Stirling plant, starting from experimental data. The producibility data was measured, recorded, analysed, filtered and monthly aggregated. Moreover, the incidence of the ambient temperature and of the mirrors cleaning on producibility data is highlighted and a procedure to normalize the measured data in temperature and cleaning level was developed. To provide a validation of the developed procedure the producibility curves at 25 °C have been obtained and compared with the one issued by the manufacturer. The two curves are in good agreement, presenting a maximum deviation of the 7 %.

Stirling engineSettore ING-IND/11 - Fisica Tecnica Ambientalebusiness.industry020209 energyMaximum deviationExperimental data02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciThermal energy storagelaw.inventionRenewable energyIdentification (information)020401 chemical engineeringlawHybrid systemSolar plant0202 electrical engineering electronic engineering information engineeringDish Stirling Electric storage Hybrid Systems Renewable Energy Solar plant Thermal StorageEnvironmental science0204 chemical engineeringProcess engineeringbusiness
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The Effect of the Harmonic Content Generated by AC/DC Modular Multilevel Converters on HVDC Cable Systems

2019

With the increasing penetration of renewable and decentralized energy sources into the power grid, an extended use of DC voltages is expected on both distribution and transmission levels. Generation of DC voltages by means of voltage source converters is associated with a wide spectrum of harmonic distortions at converter terminals, both on the ac and on the dc sides. This can lead to partial discharges in power cables, which deteriorate insulation material thus weakening its performance and reducing cable life-time. In the previously published paper, the effect of harmonic distortion on appearance of partial discharges in cable insulation was evaluated. Here, the study related to the PD be…

010302 applied physicsTotal harmonic distortionbusiness.industryComputer scienceripple020209 energyElectrical engineering02 engineering and technologyDC streConvertersmultilevel converter01 natural sciencesHarmonic analysisSynchronization (alternating current)partial dischargeSettore ING-IND/31 - ElettrotecnicaharmonicHarmonics0103 physical sciences0202 electrical engineering electronic engineering information engineeringHarmonicPDWaveformVoltage sourcebusiness2019 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)
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Partial Discharge Measurements under DC Voltages Containing Harmonics Produced by Power Electronic Devices

2018

Partial Discharge (PD) monitoring is one of the main diagnostic instrument to evaluate the reliability of modern electrical transmission and distribution systems. The widespread use of High voltage dc (HVDC) connections increase the demand of voltage source converters (VSCs) which, as a consequence, has brought about new challenges in the field of partial discharge measurements. In fact, the output voltage waveforms generated by AC/DC modular multilevel converters (MMCs) are affected by a significant harmonic content which influences the Partial Discharges (PDs) activity. For this reason, previous research mainly investigated the PD phenomenon on the AC side of the converter. The aim of the…

Materials science020209 energyRippleMultilevel converterPower electronic device02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti Elettrici01 natural sciencesDCPartial discharge0103 physical sciences0202 electrical engineering electronic engineering information engineeringVoltage sourceElectrical and Electronic Engineering010302 applied physicsbusiness.industryElectronic Optical and Magnetic MaterialElectrical engineeringHarmonicHigh voltageDC streSettore ING-IND/31 - ElettrotecnicaElectric power transmissionHarmonicsPartial dischargeHarmonicbusinessVoltage
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Inertial response of isolated power networks with wind power plants

2019

The constant increase of power generation provided by renewable energy source (RES) power plants is causing a progressive reduction of the overall inertia of the power systems. Especially in the case of small, isolated power networks, the replacement of conventional generation plants with RES power plants can affect significantly the frequency response of the system. The critical low-inertia conditions can be improved by the introduction of specific additional controls to the RES power converters. These control schemes are known as “synthetic inertia” or “virtual inertia” controls. The paper analyzes the impact of a derivative-based inertial control on a small, isolated power system, with a…

Inertial responseWind powerbusiness.industryComputer science020209 energy020208 electrical & electronic engineeringSynthetic inertiaVirtual inertia02 engineering and technologyAC powerPower (physics)Settore ING-IND/33 - Sistemi Elettrici Per L'EnergiaElectric power systemLow-inertia power systemElectricity generationSystem stabilityControl theoryFrequency responseIEC 61400-270202 electrical engineering electronic engineering information engineeringTransient responsebusinessWind turbine
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An Analysis of the Intertial Response of Small Isolated Power Systems in Presence of Generation from Renewable Energy Sources

2018

Renewable Energy Sources are posing critical issues related to the mining of power systems stability, essentially due to a decrement of the inertial response during system's contingencies. As a consequence, to preserve the security and the reliability of the system, it is necessary to adopt new frequency adjustments mechanisms. This issue becomes particularly critical in isolated power systems, like those of small islands not supplied by the main grid, in the case of high shares of production from unpredictable renewabies such as photovoitaic and wind sources. In this framework, the present work deals with the analysis of the variation of the inertia time constant of a small island in vario…

Inertial responseWork (thermodynamics)Inertial responseComputer sciencebusiness.industrymedia_common.quotation_subjectFossil fuelEnvironmental economicsInertiaGridrenewable energyRenewable energySettore ING-IND/33 - Sistemi Elettrici Per L'EnergiaElectric power systemProduction (economics)battery energy storage systembusinessBESSmedia_common2018 IEEE 4th International Forum on Research and Technology for Society and Industry (RTSI)
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Damping Provision by Different Virtual Synchronous Machine Schemes

2020

The adoption of virtual synchronous machine (VSM) schemes for the control of power converters is gaining more and more attention both in academia and industry. The VSM control strategies fall into the category of grid-forming converter controls, and they are intended for a range of different applications, providing specific services and different kinds of support to the grid. The paper investigates the possibility of damping provision to the system by VSM power converters. Different schemes are considered and compared, showing the opportunity of the investigated solutions through combined modal and time domain analyses. A specific modification of the power synchronization loop is recognized…

virtual synchronous machineComputer science020209 energy020208 electrical & electronic engineeringControl engineering02 engineering and technologysystem oscillationsConvertersdynamic analysisGridDampingSynchronizationgrid formingPower (physics)Phase-locked loopSettore ING-IND/33 - Sistemi Elettrici Per L'EnergiaModal0202 electrical engineering electronic engineering information engineeringTime domainSynchronous motor
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Extension and Tuning of Virtual Synchronous Machine to Avoid Oscillatory Instability in Isolated Power Networks

2020

The risk of oscillatory instability introduced by virtual synchronous machines (VSM) control in isolated power networks is investigated. The considered control is a common scheme widely studied in literature, in several configurations and for different case studies. The impact of the VSM control on the system stability is examined for the existing power network of a Mediterranean island. The VSM control is implemented within the power converters interfacing the energy storage systems (ESS) installed in the network. Simulations and analysis show the occurrence of oscillatory instability in the system, with the ESS-VSM and the synchronous machines of the network progressively swinging against…

Scheme (programming language)ancillary services energy storage systems isolated networks power system stability virtual synchronous machineComputer science020209 energyInformationSystems_INFORMATIONSTORAGEANDRETRIEVAL020208 electrical & electronic engineeringControl (management)02 engineering and technologyConvertersInstabilityEnergy storagePower (physics)Settore ING-IND/33 - Sistemi Elettrici Per L'EnergiaInterfacingControl theory0202 electrical engineering electronic engineering information engineeringSynchronous motorcomputercomputer.programming_language
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System Stability of a Small Island's Network with Different Levels of Wind Power Penetration

2018

The reduction of the inertial response of the generation system has been one of the main obstacles to the penetration of high sharing of renewable energy sources in islanded systems. This issue can be solved thanks to innovative control that makes wind turbines able to provide the so-named synthetic inertia. The paper investigates some scenarios with different levels of wind power penetration in a small island whose grid is not supplied by the main grid, by the use of the software NEPLAN 360, simulating the wind power plants accordingly to the standard IEC 61400-27. The aim of the paper is to assess the maximum level of penetration in the island of wind generation, with traditional control …

Inertial responseWind powerbusiness.industrymedia_common.quotation_subjectNEPLANWindSmall islandInertiaGridRenewable energySettore ING-IND/33 - Sistemi Elettrici Per L'EnergiaSoftwareControl systemIEC 61400-27Environmental sciencebusinessStabilityMarine engineeringmedia_common2018 IEEE 4th International Forum on Research and Technology for Society and Industry (RTSI)
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