Siemens verkauft 44 Windenergie-Anlagen mit insgesamt 100 MW nach Marokko

SWT-23-93-nacelle
SWT-23-93-nacelle

Erlangen – Siemens Energy hat seine ersten Windenergie-Aufträge aus Afrika über insgesamt 100 Megawatt (MW) erhalten. Die Nareva Holding hat bei Siemens insgesamt 44 Windenergieanlagen (WEA) für die Windparks Haouma und Foum El Oued in Marokko bestellt. Siemens zeichnet für Lieferung, Installation und Inbetriebnahme der Windturbinen verantwortlich. Beide Windparks sollen im Jahr 2013 in Betrieb gehen und anschließend fünf Jahre von Siemens gewartet werden. Auf dem neuen Windmarkt Afrika ist Marokko zurzeit die Nummer zwei bei den Installationszahlen hinter Ägypten. Die marokkanische Regierung hat das Ziel, bis zum Jahr 2020 einen Anteil von 20 Prozent der Stromerzeugung durch Erneuerbare Energien sicher zu stellen.

„Diese beiden Aufträge markieren den Eintritt von Siemens Wind Power in den afrikanischen Windmarkt und zeigen, dass unsere Strategie der Internationalisierung erfolgreich ist“, sagte Felix Ferlemann, CEO der Division Wind Power bei Siemens Energy. Das Haouma-Windprojekt wird in Nord-Marokko rund 30 Kilometer östlich von Tanger und sechs Kilometer südlich der Mittelmeerküste errichtet. Das 50-MW-Projekt wird aus 22 Siemens-Windenergieanlagen des Typs SWT-2.3-93 bestehen. Das Windkraftwerk Foum El Oued wird im windreichsten Gebiet Marokkos im Bezirk Laâyoune, neun Kilometer südöstlich vom Hafen Laâyoune in Südmarokko errichtet. Dies ist ebenfalls ein 50-MW-Projekt und wird aus 22 Siemens-Windenergieanlagen des Typs SWT-2.3-101 bestehen.

The SWT-2.3-93 wind turbine is a variable-speed version of the standard SWT-2.3-82, a preferred solution for utilities and other large developers. The SWT-2.3-93 version has a larger rotor and provides superior economy at sites with moderate average wind speeds.

Rotor

The rotor of the SWT-2.3-93 turbine is a three-blade cantilevered construction, mounted upwind of the tower. The power output is controlled by pitch regulation.

Blades

The blades are made of fiberglass-reinforced epoxy resin and are manufactured by Siemens in a single operation, using our patented IntegralBlade® process. No glue joints between spars and shells, no weak points, no easy access for water or lightning. The aerodynamic design of the blades represents state-of-the-art wind turbine technology, and the blades have been thoroughly tested at Siemens’ test site under both static and dynamic loadings. The blades are mounted on pitch bearings and can be feathered 80 degrees for shutdown purposes. Each blade has its own independent fail-safe pitching mechanism capable of feathering the blade under any operating condition, and allowing fine-tuning to maximize power output.

Gearbox and Brake

The gearbox is a custom-built three-stage planetary-helical design, mounted on the nacelle with flexible rubber bushings, thereby providing a compact high-performance construction and the lowest possible noise level. The gearbox is fitted with a fail-safe mechanical brake at the high-speed shaft.

Generator

The generator rotor construction and stator windings are specially designed for high efficiency at partial loads. The generator is fitted with a separate thermostat-controlled ventilation arrangement, and by ensuring a very efficient cooling, the generator can be operated at temperatures well below the normal level of the standard insulation class, thereby providing the best possible lifetime of the winding insulation.

Tower

The SWT-2.3-93 turbine is mounted on a tapered tubular steel tower. The tower has internal ascent and direct access to the yaw system and nacelle.

Controller

The turbine controller is a microprocessor-based industrial controller, similar to the type used in other Siemens wind turbines. The controller is complete with switchgear and protection devices. It is self-diagnosing and has a keyboard and display for easy readout of status and for adjustment of settings.

Operation

The wind turbine operates automatically, self-starting when the wind reaches an average speed of about 3–5 m/s. The output increases approximately linearly with the wind speed until the wind reaches 13–14 m/s. At that point, the power is regulated at rated power. If the average wind speed exceeds the maximum operational limit of 25 m/s, the turbine is shut down by feathering of the blades. When the wind drops back below the restart speed, the safety systems reset automatically.

Safety System

The turbine has several redundant levels in the safety system, including an independent pitch system for each of the blades, and as a result, the turbine can shut down safely from any operational condition.

Remote Control

The turbine is equipped with the unique WebWPS SCADA system. The system offers long-distance control and a variety of status views and useful reports from a standard internet web browser.

Grid Compliance

The SWT-2.3-93 turbine is fitted with our proprietary NetConverter® system that is compliant with even very demanding grid codes. The NetConverter® system has ride-through capability for all normal faults.

PM: Siemens

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