Converting OCL and CGMES Rules to SHACL in Smart Grids

Models are first-class elements in Model-Driven Engineering (MDE). In this paradigm, the most widespread approaches adopted by the development community are Object-Oriented and ontological, formalized using Unified Modeling Language (UML) and Resource Description Framework (RDF), respectively. However, Object Management Group (OMG) does not provide a specific standard language for validating UML models against Object Constraints Language (OCL) constraints; meanwhile, World Wide Web Consortium (W3C) has defined Shapes Constraint Language (SHACL) as a standard validation language. Although the transformation between UML and RDF can be performed at the structural level, no effort has been made to transform OCL to SHACL. This paper addresses the transformation of OCL and text-based constraints to SHACL shapes in the context of Common Grid Model Exchange Standard (CGMES), a UML-based standard for electric utilities in Europe. This paper presents several contributions to the software engineering community. First, solving the validation problem in a standardized way. Second, facilitating European Network of Transmission System Operators for Electricity (ENTSO-E) the construction of an ontology associated with the CGMES standard. Third, allowing developers to integrate the two complementary approaches. Finally, Promoting the adoption and integration of the ontological approach in the software community.

Abstract licence: CC BY-NC-ND

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