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2-Winding 3-Phase Series Linear Transformer


Series transformers are very similar in design to other 3-phase transformers. However, because of their particular connection (series), they are mainly used for series devices such as DVR, active filters, UPFC, etc. The 2-winding series linear transformer 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 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

Secondary 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, R2Leakage resistance of the winding (Ω)
L1, L2

Leakage inductance of the winding (H)


Neutral Impedance Parameters

R2Neutral resistance of the secondary winding; only applies to Y ground (Ω)
L2Neutral inductance of the secondary winding; only applies to Y ground (H)
C2Neutral capacitance of the secondary winding; only applies to Y ground (F)

Ports, Inputs, Outputs and Signals Available for Monitoring


Net_1+Positive primary winding connection (supports only 1-phase connections)
Net_1-Negative primary winding connection (supports only 1-phase connections)
Net_2Secondary winding connection (supports only 3-phase connections)
Net_N2Neutral connection for secondary winding (supports only 1-phase connections)


  • None


  • None


ILMAG(a,b,cMagnetization 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)

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