Abstract

In this chapter, the OPC Unified Architecture is introduced as a future key technology for realizing a variety of Smart Grid applications addressing automation and control. OPC UA is the successor of the established Classic OPC specifications and state of the art regarding information exchange in the industrial automation branch. One of its major improvements is that the application area is no longer limited to industrial automation. Thus, OPC UA can be applied almost in every domain facing challenges in automated control. Besides communication services, information modeling is the key concern of OPC UA. For adopting OPC UA in the context of Smart Grids, three important data structures—the CIM, the IEC 61850, and IEC 61131-3 for industrial control programming—have been identified to be integrated into OPC UA communication. Within this chapter, the OPC UA is basically introduced and its historical development is described. Furthermore, underlying principles for information modeling and communication services are explained. After taking profiling and security concepts of the OPC UA into consideration, the mappings to Smart Grid semantics are analyzed in a more detailed way.KeywordsSmart GridAddress SpaceProgrammable Logic ControllerIndustrial AutomationLogical NodeThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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