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-MFra-21-Topaz II
21-Topaz II
Jul 20, 2025 1:50 PM UTC
Solved

Analysis of an electrical network on a topological basis and inconsistances.

Hello everyone!
In the attached photo, I perform a topological analysis starting with the graph of a given system. At the end of the calculation, the two matrices β.t and Q.f should be equal, but instead they are different. Why?
Thank you to everyone who will respond.
Bye!

 

Graph 1.pngGraph 2.pngGraph 3.pngGraph 4.pngGraph 5.png

-MFra-Answer
21-Topaz II
Jul 21, 2025 9:57 AM UTC

I chose a new tree with no problem-causing configurations, the results are perfect.

Graph 1.pngGraph 2.pngGraph 3.pngGraph 4.pngGraph 5.png

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3 replies

Werner_E
Werner_E25-Diamond I
25-Diamond I
Jul 20, 2025 2:13 PM UTC

The two matrices differ in exactly one position (indices 11,17):

Werner_E_0-1753020798439.png

Werner_E_1-1753021031151.png

 

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-MFra-21-Topaz IIAuthor
21-Topaz II
Jul 20, 2025 3:40 PM UTC

Yes indeed! I'd like to know why this happens? the equality of the matrices must hold.

I think the tree I chose (orange branches), among the many, isn't right. I'll try changing it soon.

(...and changing the tree means starting all over again....)

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-MFra-21-Topaz IIAuthorAnswer
21-Topaz II
Jul 21, 2025 9:57 AM UTC

I chose a new tree with no problem-causing configurations, the results are perfect.

Graph 1.pngGraph 2.pngGraph 3.pngGraph 4.pngGraph 5.png

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