Enum Variable 

pub enum Variable {
    ActiveInjection(usize),
    ReactiveInjection(usize),
    TransformerRatio(usize),
    PhaseShift(usize),
}

An input the operating point can be differentiated with respect to.

Variants

ActiveInjection(usize)

Active power injected at a bus, per unit.

Undefined at a slack bus, whose injection is not an input but the solve’s own result — the response there is identically zero, exactly as a DC PTDF column is zero at its reference.

ReactiveInjection(usize)

Reactive power injected at a bus, per unit.

Only meaningful at a PQ bus. At a PV or slack bus the voltage magnitude is held, so reactive power is an output — the response is identically zero.

TransformerRatio(usize)

A transformer’s off-nominal voltage-magnitude ratio k, by flat branch index (lines first, then transformers).

Zero for a line, which has no tap to move.

PhaseShift(usize)

A phase-shifting transformer’s angle α, radians, by flat branch index.

This is the argument of the complex tap — the quantity a phase shifter actually controls, and the one that steers active power.

Trait Implementations

impl Clone for Variable

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for Variable

impl Debug for Variable

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for Variable

impl PartialEq for Variable

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Variable