Abstract— A technique in the construction of a generalized mathematical model of an operator workstation was developed. The model provides a description of the user interface elements information and management functions displayed in a graphical form. A formalization method of the work process for the operator with on-screen controls in systems with human machine interfaces has been proposed. Structural-functional models of parameters measurement and system monitoring of the synchronous generator have been developed. The presented approach is based upon an object-oriented approach of description; and it contains information on the structure and types of information links between the ingredients and elements of the system.