Electric Power System (Model of Dobson and Chiang)

Bifurcation diagram V and $V_{\min}$ versus load $\lambda$. detail: $2.555\leq\lambda\leq 2.568$, all stationary states and some periodic states (S: stationary, P: periodic, s: stable, u: unstable, HB: Hopf bifurcation, PD: periodic doubling)