Development of a Digital Twin for Torsional Vibrations of Turbogenerators

Turbogenerators, integral to nuclear power plants, comprise steam turbines that transform thermal energy into mechanical energy and generators that convert this mechanical energy into electrical energy. However, disturbances in the electrical generator-grid system can lead to significant transient torsional vibrations in the shaft train, necessitating careful monitoring for safe operation. 

Utilizing a Finite Element Model (FEM), the Digital Twin accurately calculates and compares real-time torsional vibrations against theoretical predictions. This system can not only continuously monitor the vibrational state of the turbogenerator but also aid in diagnosing system failures and parameter changes. The development of this Digital Twin is particularly focused on the Olkiluoto turbogenerator OL3, with the potential for adaptation to other units through model adjustments.