Hi Simone,
The negative branch is due to the conversion of pair-wise transformer test data to “T” model. See if the attached helps. It is not a “real” negative physical value – it is necessary for the mathematical model. Best regards, russ From: [email protected] [mailto:[email protected]] On Behalf Of Simone Fratton Sent: Friday, June 18, 2021 5:17 AM To: MATPOWER discussion forum Subject: Re: Negative resistance Thank you very much for your answer, but I am not sure that I have yet understood why; especially if at the end it's about having a transformer with negative resistance. Il giorno ven 18 giu 2021 alle ore 11:08 Dirk Van Hertem <[email protected]> ha scritto: Hello, Negative resistances normally correspond to equivalent branches... Dirk On 18/06/2021 11:04, Simone Fratton wrote: Hello everyone, I wanted to ask you if anyone knows exactly why in some cases the resistance of mpc.branch is negative? Or at least if someone has any good ideas. For example, case3012wp has as many as 10 negative resistances (all refer to a transformer). Thank you all very much.
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