ACLineSegment

Class Description

A wire or combination of wires, with consistent electrical characteristics, building a single electrical system, used to carry alternating current between points in the power system.
For symmetrical, transposed three phase lines, it is sufficient to use attributes of the line segment, which describe impedances and admittances for the entire length of the segment. Additionally impedances can be computed by using length and associated per length impedances.
The BaseVoltage at the two ends of ACLineSegments in a Line shall have the same BaseVoltage.nominalVoltage. However, boundary lines may have slightly different BaseVoltage.nominalVoltages and variation is allowed. Larger voltage difference in general requires use of an equivalent branch.

Attributes

Name Type Description
b0ch Susceptance Zero sequence shunt (charging) susceptance, uniformly distributed, of the entire line section.
bch Susceptance Positive sequence shunt (charging) susceptance, uniformly distributed, of the entire line section. This value represents the full charging over the full length of the line.
g0ch Conductance Zero sequence shunt (charging) conductance, uniformly distributed, of the entire line section.
gch Conductance Positive sequence shunt (charging) conductance, uniformly distributed, of the entire line section.
r Resistance Positive sequence series resistance of the entire line section.
r0 Resistance Zero sequence series resistance of the entire line section.
shortCircuitEndTemperature Temperature Maximum permitted temperature at the end of SC for the calculation of minimum short-circuit currents. Used for short circuit data exchange according to IEC 60909.
x Reactance Positive sequence series reactance of the entire line section.
x0 Reactance Zero sequence series reactance of the entire line section.

Relationships

Inherits from

Descendant classes

Leaf/Root class

IsLeaf IsRoot
False False

Associations

Source Class Cardinality Source Target Class Cardinality Target Source Name Source Assoc. Description Target Name Target Assoc. Description
ACLineSegment 1 Clamp 0..* ACLineSegment The line segment to which the clamp is connected. Clamp The clamps connected to the line segment.
ACLineSegment 0..* WireSpacingInfo 0..1 ACLineSegment WireSpacingInfo
ACLineSegmentPhase 0..* ACLineSegment 1 ACLineSegmentPhases The line segment phases which belong to the line segment. ACLineSegment The line segment to which the phase belongs.
Cut 0..* ACLineSegment 1 Cut Cuts applied to the line segment. ACLineSegment The line segment to which the cut is applied.
PerLengthImpedance 0..1 ACLineSegment 0..* PerLengthImpedance Per-length impedance of this line segment. ACLineSegments All line segments described by this per-length impedance.
LineFault 0..* ACLineSegment 0..1 LineFaults The line faults of the line segment. ACLineSegment The line segment of this line fault.
GroundAction 0..1 ACLineSegment 0..1 LineGroundingAction Ground action involving clamp usage (for the case when the ground is applied along the line segment instead of at its terminals). AlongACLineSegment The line segment that this ground action will affect. This is the only way to access relationship to clamp in case the ground needs to be placed along the line segment.
JumperAction 0..1 ACLineSegment 0..* LineJumpingAction Jumper action involving clamp usage (for the case when the jumper is applied along the line segment instead of at its terminals). ACLineSegments The line segment that this jumper action will affect. This is the only way to access relationship to clamp in case the jumper needs to connect along the line segment.