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Inhalt archiviert am 2022-12-27

TWO 100 KW GRID CONNECTED PV PLANTS ON SICILIAN ISLANDS

Ziel

To prove in real, grid connected conditions, that pv systems are a cost effective and non polluting way to provide electric energy to small island grids. These systems can validly substitute DIESEL generation.

ENEA has developed, in collaboration with ITALSOLAR and ANSALDO, a standard 100 kWp photovoltaic system for grid connected or stand-alone use: PLUG=Photovoltaic Low-cost Utility Generator.
Five other plants of this type are already operating or under construction in ENEA facilities. The present two further units demonstrate the performance of the PLUGs under real conditions and linked to grids.
The new plants are operated by ENEL (public utility) and monitored by ENEA/ANSALDO.
The system cost has been optimised by standardisation of component and of the array architecture.
The systems employ line commuted inverters.
Nr. subsystems : 2
Power subsys. : 2 x 100 kWp
Total power : 200 kWp
Backup : grid, (with Diesel generator).
Nr. of modules : 2016 (Vulcano) 4000
Module descript. : EUROSOLARE (ANIT) monocrystalline Si cells, type M500A-DV and M510ADV,
modules 440 x 993 mm, 7 kg,
51.2 W average, 48 W minimum, tempered glass (2 mm thick) on both sides, factory preassembled units with 6 modules each.
Connection : string = 28 series connected modules (1.4 kW) subfield = 9 parallel strings (12.6 kW) array = 8 subfields (100.8 kW)
Support : For VULCANO: Galvanised steel racks, without concrete foundations, but with concrete blocks for anchorage. Fixed tilt of 30 degrees.
Max. pwr. trcker : incorporated in the inverter
Chrg. controler : none
Battery : none
Inverter : PCU, Power Conditioning Unit, new type (IGBT and PWM technology, self-commutated) pre-assembled in two 20 m3 containers, supplied by Elettronica Santermo, I-40020 Casalfiumanese (BO).
Inv. in (V) : 400 to 600 V dc, nominal 490 V
Inv. out (V) : 440 V ac, 50 Hz, then transformers to 380 V or 20 kV.
Inv. power (kW) : 100 kVA
Load descript. : Island grids with typically
1 MW installed power.
Monitoring : full analytical monitoring

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