064-12 Lohr, 2012-09-18

Everything under control

Image_Everything under control

Overarching condition monitoring from Bosch Rexroth gives operators of wind energy plants the big picture

Currently, condition monitoring systems for wind turbines have been limited to individual and specialized solutions for core components, making it difficult to assess the overall status of the plant. The wide range of different systems accounts for significant personnel requirements and costs for installing and operating the individual systems. For the first time, an integrated, holistic condition monitoring solution from Bosch Rexroth allows the complete monitoring of the entire wind turbine.

Wind turbines have to operate reliably without interruption in order to achieve the expected revenues. According to investigations by the Fraunhofer Institute for Wind Energy and Energy System Technology (IWES), most of the reported faults are due to defective or loose components or malfunctions in the turbine control system [IWES10]. The reliability of each individual component ultimately determines how reliably the overall system operates. Monitoring and early identification of potential problems before they lead to greater damage is therefore especially important.

The holistic monitoring system from Bosch Rexroth aims to combine the monitoring of all relevant function groups over a standardized and seamless connection to a unified control centre, allowing plant operators to reduce hardware expenses and costs. Synchronizing the data recordings from different areas of the plant also allows improved detection sensitivity and results by means of signal correlation. With the systems currently available on the market, this is only possible to a limited extent and at high costs.

The Rexroth platform itself is built from individual function modules. Data acquisition and communication are merged, and measurements are taken synchronously. A sophisticated visualisation and operation environment offers a clearer overview, with the complete wind energy plant being mapped in the central menu structure. The drive train and rotor blade monitoring can be displayed alongside each other.

The first step combines the monitoring of the rotor blades, drive train, and tower. The platform can also be extended as required; for example, with load monitoring of the drive train or monitoring of the oil levels and oil cleanliness. The platform is also open to allow the connection or the integration of further third-party sensors and systems.

Rexroth at HUSUM WindEnergy: Hall 3, Stand 3D12

[IWES10] Fraunhofer Institute for Wind Energy and Energy System Technology (IWES): “Ausfallraten von Anlagenkomponenten an verschiedenen Standorten und bei verschiedenen Konzepten”, Internet platform Windmonitor: www.windmonitor, Kassel, August 2012

Bosch Rexroth AG is one of the world’s leading specialists in the field of drive and control technologies. Under the Rexroth brand name, the company supplies more than 500,000 customers with tailored solutions for driving, controlling, and moving. Bosch Rexroth is a partner for Mobile Applications, Machinery Applications and Engineering, Factory Automation and Renewable Energies. The company provides customized solutions tailored to the needs and specifications of each individual market. As The Drive & Control Company, Bosch Rexroth develops, produces, and sells components and systems in over 80 countries. As part of the Bosch Group, Bosch Rexroth and its 38,400 associates generated approximately 6.4 billion euros in revenue in 2011.

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The Bosch Group is a leading global supplier of technology and services. According to preliminary figures, more than 300,000 associates generated sales of 51.4 billion euros in the areas of automotive and industrial technology, consumer goods, and building technology in fiscal 2011. The Bosch Group comprises Robert Bosch GmbH and its more than 350 subsidiaries and regional companies in some 60 countries. If its sales and service partners are included, then Bosch is represented in roughly 150 countries. This worldwide development, manufacturing, and sales network is the foundation for further growth. Bosch spent more than 4 billion euros for research and development in 2011, and applied for over 4,100 patents worldwide. With all its products and services, Bosch enhances the quality of life by providing solutions which are both innovative and beneficial.

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Susanne Herzlieb
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