Representing the CRUTIAL project domain by means of UML diagrams Acronym list: ATS Area Telecontrol System AVR Area Voltage Regulator CD Class Diagram DSO Distribution System Operator EHV Extra High Voltage EPS Electric Power System HMI Human Machine Inte

The paper proposes the representation in form of UML class diagrams of the electric power system (EPS) intended to be composed by two kinds of interdependent infrastructures: the physical infrastructure for the production and the distribution of the electric power, and the ICT infrastructure for the control, the management and monitoring of the physical infrastructure. Such work was developed inside the EU funded project CRUTIAL pursuing the resilience of the EPS. The paper first motivates the use of UML. Then several UML class diagrams representing the EPS organization are presented and described. An example of critical scenario is represented by means of UML diagrams.