Simulation of three-phase ferroresonances in Simulink Simscape Electrical - Specialized Power Systems

Hello everyone,

Has anyone of you ever tried to simulate three-phase ferroresonances in the electrical power supply network using Matlab Simulink (Simscape Electrical - Specialized Power Systems)? If so, which cable equivalent circuit did you use? Which device was intentionally driven into saturation (transformer, voltage transformer, Petersen coil)?

Thank you in advance!

Best regards,

Torben

Answer 1

[MULI]

Hello Torben,

I understand that you need to simulate three-phase ferroresonance in an electrical power supply network using SIMULINK

1. Cable Equivalent Circuit:

• For simulating high-frequency transients and resonance phenomena like ferroresonance, distributed parameter line model can be used which is essential for capturing the dynamics of ferroresonance.

You can refer to the below documentation link for more information on this https://www.mathworks.com/help/releases/R2023a/sps/powersys/ref/distributedparameterslinefrequencydependent.html

2. Device for Saturation:

• Saturable Transformer: The “Saturable Transformer” block can be used for ferroresonance, as it is ideal for modeling nonlinear magnetizing characteristics. https://www.mathworks.com/help/releases/R2023a/sps/powersys/ref/saturabletransformer.html
• Voltage Transformer: This transformer can be used if you are interested in studying overvoltage conditions.
• Petersen Coil: Petersen coil can also be considered if you are exploring resonance phenomena involving neutral grounding.

You can refer to the below link that demonstrates an example related to transformersaturation phenomenon.

https://www.mathworks.com/help/releases/R2023a/sps/ug/three-phase-saturable-transformer.html

Hope this answers your query!

[Torben]

Thanks for your answer!