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The feed-in tariff(s) mechanism involves an obligation on the part of an electricity provider to purchase electricity generated by renewable energy sources in its relevant area, paying a tariff determined by public authorities and... more
The feed-in tariff(s) mechanism involves an obligation on the part of an electricity provider to purchase electricity generated by renewable energy sources in its relevant area, paying a tariff determined by public authorities and guaranteed for a specific time period. Feed-in tariff(s) have been the primary mechanism used for supporting the development of renewable energy sources in the EU and, up to date, they
are being applied in 20 EU Member Countries.
On 6 July 2013, the Italian experience with feed-in tariff(s) for photovoltaic systems finished. During its lifetime of eight years, this incentive mechanism, named ‘‘Conto Energia’’, was characterized by periods of
great success followed by others of serious skepticism. The implementation of the Italian feed-in tariff(s) mechanism was changed many times, becoming very close to the European standard.
are being applied in 20 EU Member Countries.
On 6 July 2013, the Italian experience with feed-in tariff(s) for photovoltaic systems finished. During its lifetime of eight years, this incentive mechanism, named ‘‘Conto Energia’’, was characterized by periods of
great success followed by others of serious skepticism. The implementation of the Italian feed-in tariff(s) mechanism was changed many times, becoming very close to the European standard.
Research Interests:
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An Innovative Conversion Deviceto the Grid Interface of Combined RES-based generators and Electric StorageSystemsmore
by Gaetano Zizzo and Giorgio Graditi
This paper is focused on the development of an innovative device, based on a bidirectional converter, for the interface to the supply utility grid of combined RES-based generators and electric storage systems. Thie device can be... more
This paper is focused on the development of an innovative device, based on a bidirectional converter, for the interface to the supply utility grid of combined RES-based generators and electric storage systems. Thie device can be controlled so as to ease the interface between the low voltage grid and photovoltaic or wind generators combined with lithium–ion LiFePO4 batteries, taking into account the requirements of the reference technical standards for users connection and offering different ancillary services. The operational functioning of the device, the architecture and its electronic components, as well as laboratory and field test activities and results are described. The conversion device has been developed and the main results that have been achieved are detailed.
Research Interests:
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The paper presents an analysis methodology for a single-line-to-ground fault, occurring at a secondary MV/LV substation in a power network formed by a HV/MV station, feeding, through a MV tri-phase cable line, N MV/LV... more
The paper presents an analysis methodology for a single-line-to-ground fault, occurring at a secondary MV/LV substation in a power network formed by a HV/MV station, feeding, through a MV tri-phase cable line, N MV/LV substations whose earth electrodes are interconnected by bare buried conductors.
Preliminary explayning the methodology, earth buried conductors are studied in their double function of earth electrodes and connection elements between earthing grids, both in absence and in presence of other interfering conductors.
Subsequently is analyzed, with a distributed parameters approach, the system constituted by an earth buried conductor and a MV tri-phase cable line. The equations that describe system behaviour are solved with the decoupling method of Modal Analysis.
The proposed methodology allows to determinate the currents injected in the ground by the buried conductor and by the earth electrodes of the substations, as a consequence of an earth fault, whichever is the faulty substation.
A numerical example clarifies the presented methodology.
Preliminary explayning the methodology, earth buried conductors are studied in their double function of earth electrodes and connection elements between earthing grids, both in absence and in presence of other interfering conductors.
Subsequently is analyzed, with a distributed parameters approach, the system constituted by an earth buried conductor and a MV tri-phase cable line. The equations that describe system behaviour are solved with the decoupling method of Modal Analysis.
The proposed methodology allows to determinate the currents injected in the ground by the buried conductor and by the earth electrodes of the substations, as a consequence of an earth fault, whichever is the faulty substation.
A numerical example clarifies the presented methodology.