Struct Transformer3W 

#[non_exhaustive]
pub struct Transformer3W {
    pub windings: [Winding; 3],
    pub z: [Impedance; 3],
    pub star_vm: f64,
    pub star_va: f64,
    pub mag_g: f64,
    pub mag_b: f64,
    pub in_service: bool,
    pub name: Option<String>,
    pub uid: Option<String>,
    pub extras: BTreeMap<String, Value>,
}

A three-winding transformer: three terminal buses joined at a common star point, with the series impedance given pairwise (winding 1-2, 2-3, 3-1).

Kept as a typed record (not three Branches) so the star-point voltage and the per-winding control data survive a same-format round trip. Both the PSS/E 3-winding record and the PSLF tertiary-winding record map onto it. star_expansion turns it into the synthetic star bus plus three branches for a consumer that works in the bus-branch model; IndexedNetwork applies it before building any matrix, so a 3-winding transformer contributes to Y_bus and connectivity.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

windings: [Winding; 3]

The three windings, in order (primary, secondary, tertiary).

z: [Impedance; 3]

Pairwise series impedance [z12, z23, z31] (primary-secondary, secondary-tertiary, tertiary-primary), each per unit on the system base with its declared MVA base.

star_vm: f64

Star-point voltage magnitude (p.u.) and angle (degrees), as solved.

star_va: f64

mag_g: f64

Magnetizing shunt referred to the star point (p.u. on the system base).

mag_b: f64

in_service: bool

name: Option<String>

uid: Option<String>

Stable row identity; see Bus::uid.

extras: BTreeMap<String, Value>

Implementations

impl Transformer3W

pub fn new(windings: [Winding; 3], z: [Impedance; 3]) -> Transformer3W

pub fn star_impedances(&self) -> [(f64, f64); 3]

The per-winding star impedances (r, x) — winding k to the star point — from the pairwise values, per unit on the system base.

Standard pairwise→star conversion: z1 = (z12 + z31 - z23) / 2, and so on. Because the impedances are already on a common base, the split is linear in r and x separately.

pub fn star_expansion(&self, star_id: BusId) -> (Bus, [Branch; 3])

Expand into a synthetic star Bus (id star_id) plus three Branches, one per winding, for a consumer that works in the bus-branch model. IndexedNetwork calls this via Network::expand_transformers_3w when assembling matrix inputs. The star bus carries the stored star voltage and the magnetizing shunt is left to the caller; each branch takes its winding’s tap, phase shift, and ratings.

Trait Implementations

impl Clone for Transformer3W

fn clone(&self) -> Transformer3W

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Transformer3W

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Transformer3W

fn deserialize<__D>( __deserializer: __D, ) -> Result<Transformer3W, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for Transformer3W

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.