Ziel
To study the electrical effects (change of energy flow, harmonics, dc-component, islanding, flickering, ecc.) in a low-voltage grid for a cluster connection of many individual pv systems.
Installation and erection procedures are standardised and allow cost reductions (10 ECU/Wp);
Comparison of load demand and pv production. Aesthetical aspects of roof mounting and roof integration.
Individual pv systems of 2 kWp each are installed on the roofs of five housing blocks of 25 serial houses in Essen. The systems are connected separately to the grid via inverters. During the first year line-commutated inverters are studied, during the second year self-commutated inverters. Full monitoring is one of the major aims of the study. Nr. of subsystems : 25
Power subsystems : 2 kWp
Total power : 50 kWp
Backup : grid
Nr. of modules : 10 per system (250 whole project)
Module descript. : ASE (former NUKEM) (MIS frameless modules, 1100x1675 mm), 200 Wp, monocrystalline.
Connection : two and a half modules per string (187 V); 4 parallel strings
Support : on the roofs of 25 serial houses in five blocks
Max. pwr. trcker : in the inverter
Chrg. controller : none
Battery : none
Inverter : SOLAR Konzept (line-commutated in the first year), AIXCON 1.6 kW (self-commutated in the second year).
Inv. in (V) : 130 to 195 V
Inv. out (V) : 230 V
Inv. power (kW) : 1.75 kW
Load descript. : direct coupling to low-voltage grid.
Monitoring : complete monitoring for systems studies.
Programm/Programme
Thema/Themen
Aufforderung zur Vorschlagseinreichung
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DEM - Demonstration contractsKoordinator
45128 ESSEN
Deutschland