Power Plant Coordination
Cogent DataHub™ Use Case
A national power company in Asia is using DataHub software to support data communications in redundant configurations for a group of power plants spread across a wide geographical area. The requirement was to ensure that all data be collected, securely and completely, from the plants, and be made available to authorized personnel to view on the web, in spreadsheets, and emails, as well as to be logged in corporate databases.
These requirements were implemented by connecting a DataHub instance to a redundant set of PLCs at each plant. Each PLC is connected to an OPC server, which is connected to the DataHub instance. Then each pair of DataHub instances at each plant connects by tunnelling to a single DataHub instance running at the company’s central location, which resolves the redundancy for each pair, choosing the active, trusted data stream for each plant. That DataHub instance pools all of the data into its single, unified data set, and then sends that data, as specified by management, for logging, web viewing, powering spreadsheets, or populating emails.
