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The aim of this demonstration project was to develop and build a modular autonomous electricity supply system, consisting of wind energy converters and diesel generator units. An extremely economic supply for electrical consumers not connected to the public grid should be obtained with good efficiency and a minimum use of hardware. The installation and the putting into operation was carried out in two steps. Both WECs and the measured value acquisition units were installed in October 1986. Initially, both WECs were operating in parallel with the existing diesel engines in "fuel-saving" mode. The installation of the battery-converter unit and the diesel engine with disconnectible motor was carried out in August 1987. The evaluation of the recorded data (measured over nearly one year) showed the significant advantages of the developed autonomous power supply system compared to conventional diesel plants. About 70% of the total electricity demand on the island was supplied by the WECs of the Wind/Diesel/Battery Combination. The overall running time of the diesel motor was reduced to one third, resulting in a correspondingly longer lifetime. The economy evaluation resulted in a kWh-price 25% lower than the kWh-price for a diesel plant of comparable size.

Additional information

Authors: CRAMER G, SMA-Regelsysteme GmbH, Hannoversche Strasse 3, D-3501 Niestetal 1 Kassel (DE)
Bibliographic Reference: EUR 12232 EN (1989) FS, 156 pp., ECU 12.50
Availability: (2)
ISBN: ISBN 92-825-9999-X;CD-NA-
Record Number: 198911125 / Last updated on: 1994-12-01
Original language: en
Available languages: en
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