Increased availability thanks to new frequency converters at Reuter West CHP Reference – Electrical Solutions Instrumentation, Controls & Electrical SPPA-E3000 Drive Modernization involved the replacement of the frequency converters for the mill air fans at the Reuter West combined heat and power plant. This led to a significant increase in plant availability. The Result ■ Increased availability thanks to modernized frequency converter ■ Lower auxiliary power consumption due to optimized closed-loop control and recovery ■ Improved maintenance as a result of stocking of spare parts and timely servicing ■ Reduced capital investment thanks to continued usage of various principal components (motor, transformer, etc.) ■ Quick return on investment The Plant The coal-fired Reuter West combined heat and power plant (CHP) is operated by Vattenfall Europe Wärme AG. Commissioned in 1987 and 1989, the two identical units generate a total output of 600 MW, making the plant the most powerful in the Berlin area. Every day, some 3,300 tons of coal are consumed and more than 500,000 households are supplied with power and heat. The Task The existing frequency converters for the 3 MW mill air fans had been in operation for more than 20 years, and their recent frequent outages had begun restricting the power plant's availability. In addition, there were no spare parts or technical service available for the obsolete components, which meant that reliable maintenance was no longer possible. A new frequency converter was needed to restore the original availability of the Reuter West CHP. Our Solution SPPA-E3000 Drive Modernization allowed the availability of the Reuter West plant to be not only restored, but actually improved. The scope of supply included the delivery of a new frequency converter, dismantling of old components as well as the set up and commissioning of new components. The converter transformers and high-voltage drives were renovated and were able to be retained. The new SINAMICS GL150 frequency converters offer the continuing advantage of optimized closed-loop control and energy recovery, which means energy costs can be reduced – a welcome side-effect. Our comprehensive package of services met the power plant's individual requirements in full, which meant that Vattenfall Europe Wärme AG could increase the availability of its plant quickly and cost-effectively. "Excellent collaboration between the Vattenfall project team and Siemens meant that the project could be delivered quickly and economically. The frequency converters were replaced very quickly and with minimal commissioning effort. The equipment supplied meets our requirements perfectly and plant availability has increased considerably." Vattenfall project management Answers for energy. Published by and copyright © 2013: Siemens AG, Energy Sector Freyeslebenstrasse 1 91058 Erlangen For more information contact sppa-e3000.energy@siemens.com www.siemens.com/energy/sppa-e3000 Siemens Energy, Inc. Instrumentation, Controls, & Electrical 1345 Ridgeland Parkway, Suite 116 Alpharetta, GA 30004, USA E306_FR_Reuter-West-DrMod_e_V1-0 Order no.: E50001-G230-A339-X-4A00 Printed in Germany Dispo 05401, c4bs-Nr. 7465 Printed on elementary chlorine-free bleached paper. Unrestricted AL:N ECCN:N All rights reserved. Trademarks mentioned in this document are the property of Siemens AG, its affiliates, or their respective owners. Subject to change without prior notice. The information in this document contains general descriptions of the technical options available, which may not apply in all cases. The required technical options should therefore be specified in the contract.