Thevenin reduction of network for fault analysis trouble.

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SUMMARY

The discussion focuses on the Thevenin reduction of a network for fault analysis, specifically addressing the transformation from a Δ (delta) configuration to a Y (wye) configuration. The fault impedance is defined as Zfa = Zfb = Zfc = j0.5. Participants identified that the initial calculations did not convert from Cartesian to polar coordinates, which was a critical oversight in determining the equivalent impedance. The consensus is that applying the Δ-Y transformation correctly will resolve the issues encountered in the analysis.

PREREQUISITES
  • Understanding of Thevenin's theorem
  • Knowledge of Δ-Y (Delta-Wye) transformations
  • Familiarity with complex impedance in electrical circuits
  • Ability to convert between Cartesian and polar coordinates
NEXT STEPS
  • Study Thevenin's theorem in depth
  • Learn about Δ-Y transformation techniques
  • Practice converting complex impedances from Cartesian to polar form
  • Explore fault analysis methods in electrical networks
USEFUL FOR

Electrical engineering students, circuit designers, and professionals involved in fault analysis and network simplification.

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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