Add to ORKGAbstract: Modelling power systems is an area of ongoing interest in the transmission management and control systems community. Continuing development is driven by two forces. The traditional tasks of model maintenance and management must be achieved with fewer resources. At the same time, model exchange and coordination has become a priority. The latter force arises from the disaggregation of utility functions and the introduction of power markets. This paper begins by identifying some of the power system modelling tasks that have become important, but are ill served by current tools and techniques. Among these are model versioning and version control, migration of models between different schema, the transformation of models for different ...