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3-Winding 3-Phase Linear Transformer

Owned by Sylvain Ménard
Last updated: Mar 16, 2023
2 min read

Description

The 3-winding linear transformer is the simplest form of 3-phase transformer. It is best used when the simulation of saturation can be avoided as it can save computation time.

Table of Contents

Mask and Parameters

General Parameters

DescriptionUse this field to add all kinds of information about the component
Base primary/secondary/tertiary winding voltage (rmsLL)

Base value for PU conversion (kV).

Voltage expressed in kV rms LL

This base voltage and nominal voltage will change, if the corresponding winding connection switches between delta and Y.

Base power (total) Base value for PU conversion (MVA)
Base frequencyBase value for PU conversion (Hz)

 Magnetization Impedance Parameters

  • Rm: Equivalent resistance of iron losses of the magnetic circuit (Ω)
  • Lm: Magnetization inductance (H)

Winding Parameters

Primary/secondary/tertiary connection 

Winding type

  • Y ground: Grounded Y connection (can use the internal neutral impedance specified in the other tab)
  • Y floating: Floating Y connection
  • Y neutral: Y connection with impedance connected at the input pin N1 or N2
  • Delta lead: Delta connection with lead of 30°
  • Delta ground: Grounded delta connection (Phase C is grounded)
  • Delta lag: Delta connection with lag of 30°

Voltage (rmsLL) 

Rated voltage of the winding (kV)

  • Y connections: Voltage expressed in kV rms LL
  • Delta connections: Voltage expressed in kV rms LL
R1, R2, R3 Leakage resistance of the winding (Ω)
L1, L2, L3Leakage inductance of the winding (H)


Neutral Impedance Parameters

R1, R2, R3Neutral resistance of the winding; only applies to Y ground (Ω)
L1, L2, L3Neutral inductance of the winding; only applies to Y ground (H)
C1, C2, C3Neutral capacitance of the winding; only applies to Y ground (F)

Ports, Inputs, Outputs and Signals Available for Monitoring

Ports

Net_1 Primary winding connection (supports only 3-phase connections)
Net_2 Secondary winding connection (supports only 3-phase connections)
Net_3 Tertiary winding connection (supports only 3-phase connections)
Net_N1Neutral connection for primary winding (supports only 1-phase connections)
Net_N2Neutral connection for secondary winding (supports only 1-phase connections)
Net_N3 Neutral connection for tertiary winding (supports only 1-phase connections)

Inputs

  • None

Outputs

  • None

Sensors

ILMAG(a,b,c) Magnetization current for each phase (A)
IPRIM(a,b,c) Primary current for each phase (A)
ISEC2(a,b,c) Secondary current for each phase (A)
ISEC3(a,b,c)Tertiary current for each phase (A)

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