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Negative Voltage MPLOT

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  • 31 July 2025 at 10h56 #6638
    anonymous
    Keymaster

    Hi there,

    I’m fairly new to the software and have been doing some analysis on EMPT using a frequency dependent model. I was wondering if someone could explain or refer me to a paper/journal/book, as to why I see negative voltage plots using this method and only positive voltages when using a constant parameter model. Does it have to do with the initial conditions on each phase (ie 1.1pu of say 118, -59, -59) and a negative polarity surge (ie connecting -ve end of current source to the system)

    Cheers

    31 July 2025 at 10h59 #6640
    anonymous
    Keymaster

    Hi Adham,

    I am not sure to understand your question. Can you send the two cases by email (support@emtp.com or e.rutovic@powersys.fr) ? 

    Thanks,

    Emmanuel.

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