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Photovoltaic off grid systems
With over 60 years of experience in power conversion,
AEG Power Solutions has developed a turnkey
solution for photovoltaic off grid systems, for
power from 60kWc to 250kWc, 500VDC / 400VAC.
This system allows you to feed a village, a district,
a station, in areas that are far away from
the electricity grid connection.
The system consists of:
•A
photovoltaic plant divided into strings through outdoor
junction boxes,
ne or several diesel generators (if existing),
•O
•O
ne to three UPS (400VAC 3P + N, 50-60Hz) in parallel,
fed by the generator,
• A battery connected to UPS (NiCd or Lead acid - open or sealed
depending on the level of local maintenance - customized
to the power and the backup time at night, 1 or 2 strings),
• A PV string collector cabinet with PV string current monitoring,
fuse protection and NRC50 controller,
• A cabinet integrating upstream and downstream AC UPS
protections, DC battery protections, PV current isolating means
and a manual by-pass allowing the generator to feed directly
the consumers.
The system handles:
• Production of photovoltaic power during the day,
• Storing the surplus in the battery for a refund during the night,
• Starting the generator in case of over-consumption (compared
with the available solar energy) or for battery charging,
• Temperature compensation for a fully optimized battery charging
regime and periodic high rate charge by generator,
• Battery thermal protection, overvoltage protection, voltage
asymmetry detection,
• Communication between UPS and NRC50,
• Monitoring of the installation, with different operating conditions,
safety devices control, alarms management and report, settings
menu and data display,
• The record of solar energy, energy to consumers,
• PV Module failure detection by comparing the string currents,
• Remote connection through GSM, SMS alarm message
transmission, TCP-IP,
• The connection to the remote system for monitoring and
troubleshooting assistance through multi-site supervision,
• Backup functions of the facility (intruder detection, lightning
protection, solar radiation and temperature measurement...).
agence : yvydy.
Photovoltaic off grid systems
• Creates electricity grid for isolated sites,
• Reduces the fuel oil consumption when users are already
powered by generator,
unning time of the generator thus decreased, maintenance
•R
costs minimized and lifetime of the group increased compared
to 24/24 running,
se of solar energy in order to reduce pollution (air and noise),
•U
• Increase the available peak power thanks to the batteries
and the UPS overload capacity (125% - 10mn, 150% - 1min),
• Quality of output signal through the UPS (no micro-break,
perfect sine wave signal, voltage and frequency stability,
dynamic response),
• The system offers a very high level of protection for users,
without interruption, secured, redundant, multi-energy,
with storage, like industrial electricity networks in terms
of quality and reliability,
• Flexibility and openness of the system, designed to satisfy
customer needs (PV modules configuration, number
of battery strings, UPS, generator management, customized
alarm report...),
• Ability to propose and commit to a service guarantee
(in lifetime and energy),
• Complete offer of service contracts: erection, commissioning,
training, spare parts, battery unit replacement.
AEG Power Solutions
ZI 10 rue Jean Perrin
37173 Chambray-lès-Tours
Tel : +33 (0) 2 47 80 88 60
Fax : +33 (0) 2 47 28 07 19
Web: www.aegps.com
AEG - 02/11 - EN - V1 - En raison de notre politique permanente d’amélioraion, les informations contenues dans ce document peuvent changer sans préavis et ne deviennnent contractuelles qu’après confirmation écrite.
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