v_alpha: terminal voltage and phase angle ('slack') v_p: terminal voltage and active power v_q: terminal voltage and reactive power p_q: terminal active and reactive power phi_w_el: machine angle and angular velocity electric none: no initial condition
type Init = enumeration(v_alpha "v, alpha: voltage and phase angle, 'slack' (steady init)", v_p "v, p: voltage and active power (steady init)", v_q "v, q: voltage and reactive power (steady init)", p_q "p, q: active and reactive power (steady init)", phi_w_el "phi_el, w_el: machine angle and angular velocity electric", none "none: no initial condition");