Case Study: Sotavento Power Plant

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Updated: 12/11/2008

The Sotavento Virtual Power Plant in Galicia, Spain, is a "green" power utility with an annual production of approximately 38,500 MWh. The plant uses alternative fuels, specifically wind power, supplemented by hydrogen. At the Sotavento plant, Opto 22's SNAP PAC System provides a solution for not only automation and control, but also data acquisition, enterprise connectivity, and communication to databases.

Systems integrator Optomation Systems designed an integrated supervisory system for the Sotavento site, based on the Opto 22 SNAP PAC System platform. Utilizing a mix of analog and digital I/O connections, standalone and rack-mounted SNAP PACs connect to electrolyzers, motor generator units, and other plant systems and communicate with this equipment as well as with the plant's legacy SCADA systems. Disparate machinery and instrumentation from vendors such as Hydrogenics, Emerson, and Bauer Compressors are linked to the Opto controllers, which communicate using a variety of industrial protocols, such as Profibus and Modbus. The controllers also aggregate all data and serve it to Sotavento databases for analysis and archiving.