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Building short circuit equivalent in EMTP – Phase shifter

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  • 31 July 2025 at 13h32 #6828
    anonymous
    Keymaster

    Hi,

    I am trying to build a short circuit equivalent in EMTP.

    I had created the short circuit equivalent of a large network in ASPEN(using in-built function) and I have a phase-shifter in my ASPEN equivalent which also has a negative sequence component – R2&X2 values.

    How can I implement this component in EMTP? I can see a phase-shifter in EMTP but with only positive & zero sequence inputs.

    Thanks

    31 July 2025 at 13h36 #6832
    anonymous
    Keymaster

    Dear Rpandia,

    In order to model a shortcircuit equivalent in EMTP, you can use the device “”Ac voltage source and impedance”” from “”sources”” library.

    It use an ideal voltage source combined with a RL impedance. In the Impedance tab, you can enter the impedances from the short circuit data (voltage, sc power, RL ratio …) or you can directly enter the sequences (pos, neg and 0) impedances.

    Best regards,

    J. Cornau

    31 July 2025 at 13h36 #6833
    anonymous
    Keymaster

    Hi Cornau,

    My mistake. I was talking about mutual coupling between two stations while creating the equivalent circuit in ASPEN.

     

    Please see the snap from ASPEN below

    31 July 2025 at 13h37 #6834
    anonymous
    Keymaster

    Hi,

    If you are trying to represent it in EMTP, the RL Coupled device should be enough. You can activate the sequence display in the 3phases version of the RL Coupled device.

    Best regards,

    Jerome Cornau

    31 July 2025 at 13h37 #6835
    anonymous
    Keymaster

    test

    31 July 2025 at 13h37 #6836
    anonymous
    Keymaster

    test

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