Synchronous generator connected to grid - Behn-Eschenburg diagram

On this page, a synchronous generator connected to the grid is simulated (Fig. 1). The characteristics of this machine are inspired by the reversible units of the Super-Bissorte 2 power plant.
Synchronous machine connected to the grid. Equivalent circuit and Behn-Eschenburg diagram
Fig. 1: global view of the simulation, with equivalent circuit and Behn-Eschenburg phasor diagram.