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Industrial Ethernet Book 105

Resilient data communications support reliable flood protection Industrial networking technology is helping AWA achieve dependable regulation of water levels at three lakes in the canton of Berne, 24 hours a day and 365 days a year. Three control centres have two firewall routers, connecting them to the internet and enabling them to receive or set up IPsec and OpenVPN tunnels. EXTREME WEATHER IS INCREASINGLY COMMON throughout the world, making flooding a growing threat. Flood defence measures have traditionally been based on mechanical equipment, but innovative automation technology can now be used to provide greater protection for people and the local environment. AWA, the Office for Water and Waste in the Swiss canton of Berne, is using this latest technology to regulate water levels at the region’s Brienzersee, Thuner and Bielersee lakes, 24 hours a day, 365 days a year. “Water level regulation must protect people from flooding and prevent damage - ideally in an economically justifiable way,” said Dr. Bernhard Wehren, head of maritime regulation at AWA. “Some of our important control operations are particularly time-critical, but until recently, we relied on dataloggers that only sent the different measurements we require every few hours or so." "Now, thanks to the new state-of-the-art technology we have implemented, this happens in real time. It is therefore very important that the data communications technology supports this by reliably meeting all the challenges and requirements of our unique mission-critical communications infrastructure,” he added. Modernising facilities To help provide the most reliable flood protection, AWA decided to modernise its water regulation facilities for the lakes, encompassing four historic locks, the large Port of Bruggweir and accompanying hydropower plant, and a flood relief tunnel. Due to the increasing demand for the availability of more data, AWA also decided to upgrade all the measurement stations with state-of-the-art technology. The measurement stations play a crucial role in regulating water levels in the lakes. When developing a plan to modernise the equipment, great attention was paid to both operational safety and system redundancy. There was a need to address the obsolete electrical engineering at Port of Brugg. This would include the conversion of all existing drives and the renewal of the energy supply, a large part of the cabling and the control and monitoring elements for the five weirs. Regulation and control technology also needed attention. Not only was there a need for redundancy in the event of a device failure or a line interruption, but also in case of communication disruptions, such as interruptions to the internet connection. BKW Energie AG was appointed as the technical service provider and after a thorough review of suitable data communications technology companies, they chose Westermo to provide its robust networking solutions for the project. Fast communication performance “Crucial to the selection of Westermo was that their products met our high standards 12 industrial ethernet book 4.2018 SOURCE: WESTERMO The flood defense system now has one of the most modern data communication systems in Switzerland. Applications


Industrial Ethernet Book 105
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