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Thread: Help in Transformer Calculations/Modeling

  1. #1

    Thumbs up Help in Transformer Calculations/Modeling

    Can you please help model this transformer in PSCAD?

    A single phase 10 kVA 20kV/110V 50 Hz transformer. primary resistor = 5000 ohms * primary inductance = 10000 H* secondary resistor = 0.2 ohms * secondary inductance = 10 H* Exciting Current 0.5%.

    I need to compute PU leakage reactance X12 (or PU Impedance Zpu??)* PU Copper Losses and PU No-Load Core Losses as the transformer model in PSCAD requires this.

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  3. #2

    Help in Transformer Calculations/Modeling

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    Last edited by surgeArrester; 03-01-2017 at 03:36 AM.

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  5. Re: Help in Transformer Calculations/Modeling

    Quote Originally Posted by kuchow View Post
    Can you please help model this transformer in PSCAD?

    A single phase 10 kVA 20kV/110V 50 Hz transformer. primary resistor = 5000 ohms * primary inductance = 10000 H* secondary resistor = 0.2 ohms * secondary inductance = 10 H* Exciting Current 0.5%.

    I need to compute PU leakage reactance X12 (or PU Impedance Zpu??)* PU Copper Losses and PU No-Load Core Losses as the transformer model in PSCAD requires this.

    Your primary and secondary resistance and inductance seems to be a very large value. Is this an assignment?

  6. #4
    thats why i didnt reply.. he doesnt even know how to calculate per unit copper loss despite he has already the resistance. he didnt even bother to calculate..


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  7. #5

    Re: Help in Transformer Calculations/Modeling

    first choose your base value (primary or secondary side) then divide your actual values by the base value to have your pu values

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  9. #6

    Re: Help in Transformer Calculations/Modeling

    I have seen this same question asked now on three different forums !

  10. Re: Help in Transformer Calculations/Modeling

    Quote Originally Posted by user82 View Post
    I have seen this same question asked now on three different forums !
    Hahaha

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