Thevenin reduction of network for fault analysis trouble.

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Discussion Overview

The discussion revolves around the Thevenin reduction of a network for fault analysis, specifically focusing on the transformation from a top network to a bottom network as depicted in a screenshot. Participants are exploring the steps involved in this reduction process, including the conversion of impedances.

Discussion Character

  • Homework-related, Technical explanation

Main Points Raised

  • One participant expresses difficulty in understanding the steps taken for the Thevenin reduction, noting the fault impedance values.
  • Another participant suggests that a Δ-Y transformation may be applicable to the problem.
  • A participant realizes they have not converted from Cartesian to polar form when calculating equivalent impedance, which they believe may have contributed to their confusion.
  • Multiple participants affirm the idea of a Δ-Y transformation, indicating it as a potential solution to the problem.

Areas of Agreement / Disagreement

There is a general agreement among participants regarding the relevance of the Δ-Y transformation, but the discussion remains unresolved as participants are still working through the calculations and transformations involved.

Contextual Notes

Participants have noted the importance of converting impedance from Cartesian to polar form, which may affect the calculations. The specific steps for the Thevenin reduction have not been fully detailed or agreed upon.

Bringitondown
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Homework Statement


Reduction from top network to bottom network in the screen shot. I can not find the steps that have been taken to do this.
Fault impedance = Zfa = Zfb = Zfc = j0.5
upload_2016-11-13_14-25-38.png


Homework Equations

The Attempt at a Solution


in hand written screenshot, sorry for the mess, just to show it has been attempted.
upload_2016-11-13_14-26-44.png
 
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Looks like a Δ-Y transformation to me.
 
I have just realized i have not converted from cart to pol when calculating equivalent impedance.
doh, i think this may have been the problem
 
gneill said:
Looks like a Δ-Y transformation to me.
Yes, thanks will try again with this in mind.
thank you
 
tra
gneill said:
Looks like a Δ-Y transformation to me.
Transformation right enough, thanks for this.
 
Happy to help :smile:
 

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