ENERCON WIND-DIESEL AND STAND-ALONE SYSTEMS
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ENERCON GmbH · Dreekamp 5 · 26605 Aurich · Germany · Phone +49 4941 92 70 · Fax +49 4941 92 71 09 · www.enercon.de Subject to change without notice, status 04/08 ENERCON WIND-DIESEL AND STAND-ALONE SYSTEMS SELF-SUFFICIENT POWER STATIONS USING WIND ENERGY

2 3 3 x E-33 on Falkland Islands WIND-DIESEL OR STAND-ALONE CHOOSE YOUR PREFERRED OPTION ENERCON wind turbines up to 900 kW are well suited for locations on islands or in smaller rural communities to complement the diesel stations that normally supply the energy there. In order to achieve a high penetration of wind energy in the energy mix for saving a maximum amount of diesel-fuel, ENERCON has developed the necessary equipment for grid stabilisation and system control. In order to get accustomed to wind turbines and their behaviour in the local diesel grid, the way towards a...

4 5 1. WIND-DIESEL APPLICATION With ENERCON wind energy converters and their standard integrated system controls for variable speed and variable blade pitch it is possible to safely connect and operate wind turbine capacity in the range of up to 35 % of the installed diesel capacity in parallel to the diesel gen-sets. As the turbines power output is freely selectable and reliably controlled via rotor speed and blade pitch, no dump loads are necessary and a maximum use of the wind energy is possible while the diesel machines keep their grid forming tasks (diesel remains to be the main energy...

6 7 COMPONENTS IN THE ENERCON STAND-ALONE SYSTEM Wind turbine • Main energy source ENERCON products • E-10, E-20, E-33, E-44, E-53 Flywheel • Short-term energy storage to compensate the wind energy fluctuations in the seconds range • Frequency controller in the stand-alone grid (diesel-parallel and diesel-off mode) Battery storage • Emergency back-up in the stand-alone grid (diesel-off mode) for power supply in the minute range • Frequency control in emergency cases Master Synchronous Machine used in diesel-off mode for • Voltage control • Supply of reactive power • Short circuit current...

8 9 ENERCON Stand-Alone System (Utsira/Norway) POWER MANAGEMENT SYSTEM AND HMI/SCADA The core component of the sophisticated power management system is the main control unit. It manages all components efficiently to ensure a reliable power supply under all operating conditions. The main controller for the power management of the overall system is a standard industrial state-of-the-art controller. Because of its modular design it can be adapted to the specific requirements of each system. The strategy for running the complete system in safe and economic automatic mode is implemented in the...

10 11 ADVANTAGES OF THE ENERCON STAND-ALONE SYSTEM ~The wind turbine is the main energy source, wind penetration up to 100% is possible (diesel-off mode, zero-emission). No dump loads required. Suitable wind turbine sizes available (30 – 900 kW). ~Continuous power supply is guaranteed, all emergency scenarios are backed-up. ~Excellent grid quality through use of the well-proven ENERCON IGBT inverter technology. ~High reliability, long service life, easy maintenance and good availability of spare parts due to the use of standard, robust, well-tested components. ~Ideal mix of mechanical and...