Greater Gabbard Offshore Wind Farm is under construction on sandbanks approximately 25-kilometer off the coast of Suffolk in the U.K. and is due for completion in 2012. It has a capacity of 500 megawatts (MW) making it the largest offshore wind farm once it becomes operational and Siemens Energy is supplying the 140 3.6 MW wind turbines which connect the wind farm to the National Grid. Greater Gabbard will play a vital part in supplying green electricity to meet the EU target to obtain 20 percent of energy from renewable sources by 2020.
Greater Gabbard Offshore Wind Farm is under construction on sandbanks approximately 25-kilometer off the coast of Suffolk in the U.K. and is due for completion in 2012. It has a capacity of 500 megawatts (MW) making it the largest offshore wind farm once it becomes operational and Siemens Energy is supplying the 140 3.6 MW wind turbines which connect the wind farm to the National Grid. Greater Gabbard will play a vital part in supplying green electricity to meet the EU target to obtain 20 percent of energy from renewable sources by 2020.
To assist in the safe operation of the wind farm, the business unit Security Solutions from the Siemens Building Technologies Division will deliver life-critical telecoms, surveillance including a virtual video network and integrated alarm monitoring across a fully integrated IP-based monitoring network which includes VoIP operating 25-kilometer out at sea. To enable viewing of the video data from the U.K. and Europe, Siemens is also integrating the video alarms and monitoring into a Siemens platform, and the client's IP network.
The primary purpose of the surveillance of the offshore wind farm is to evaluate conditions on the remote site, safeguard personnel and monitor the operation offshore. The video information is also used for logistic purposes, planning and for potential incident evaluation.
Both the network and the equipment chosen had to be robust and resilient to meet the challenge of this hostile marine environment. This project required a delivery methodology to accommodate the demands of both land and sea and to meet the key critical health and safety challenges set by the two different environments for delivery and maintenance.
In particular, one of the most important design considerations for the Security Solutions team was the remote locations of the turbines. The 140 turbines are mounted on steel monopolies and transition pieces, in water depths between 24 and 34 meters. The most important aspect of the solution was that the system had high availability with reliable proven components. As additional back-up, Siemens has built in remote diagnostics within the IP platform to facilitate remote repair.
Siemens has designed the system to meet the clients' needs using experience gained from working on projects for the National Grid and Off-shore. Siemens is overseeing both the installation and commissioning works. The system has been designed to eliminate catastrophic failures enabling a “return to land” service approach. This involved a plug-and-play design, with the capability to easily remove and swap component parts in the event of a fault. This means that specialists do not need to be shipped out to the turbine, reducing maintenance costs and downtime, with all recording equipment also located landside to enable easier access for maintenance and to ensure resilient storage.
“Renewable energy is a growing industry and an exciting new sector for Siemens. On completion, Greater Gabbard will be the largest offshore wind farm in the world and will have provided Siemens the opportunity to share its technology and services in one of the UK's most exciting renewable energy projects,” said Dave Pickles, MD of the UK Security Solutions Business Unit of the Siemens Building Technologies Division. “Siemens is a market leader in the design, installation and maintenance of innovative and customized security solutions. Our proven track record and experience in delivering multidiscipline technological solutions for critical national infrastructure, urban surveillance, transport infrastructure and police projects means we are well placed to deliver this type of specialist project.”