Calculate the zero-sequence line impedance

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Discussion Overview

The discussion revolves around calculating the zero-sequence line impedance of a transmission line using parameters available in Simulink. Participants explore the relationship between various transmission line parameters and the calculation of sequence line impedances.

Discussion Character

  • Technical explanation, Homework-related

Main Points Raised

  • One participant seeks to calculate the sequence line impedance but notes the lack of direct parameters for Z1 and Z0 in Simulink, only having access to R1/R0, L1/L0, C1/C0, and line length.
  • Another participant asks about calculating the characteristic impedance of a transmission line using inductance, capacitance, resistance, and conductance per unit length (L', C', r', g').
  • There are repeated requests for a demonstration of how to calculate impedance from the mentioned parameters.
  • A participant provides a link to an introductory article on characteristic impedance, suggesting it may contain relevant information.

Areas of Agreement / Disagreement

Participants express a shared interest in understanding how to calculate impedance, but there is no consensus on the specific methods or formulas to be used, and the discussion remains unresolved regarding the calculation of zero-sequence line impedance.

Contextual Notes

The discussion does not clarify the assumptions or definitions necessary for the calculations, nor does it resolve the mathematical steps involved in deriving the sequence line impedances from the given parameters.

minhduc515
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Homework Statement
calculate sequence line impedance from MATLAB/simulink
Relevant Equations
How to calculate sequence line impedance from MATLAB/simulink ?
Hi. I want to calculate sequence line impedance of transmission line. But i can't find any parameter of Z1 and Z0 of transmission line in simulink.
244216

It's only have parameter about number of phase, frequency, R1/R0, L1/L0, C1/C0 and line length.
Can i calculate sequence line impedance from these parameters ?
 
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Are you familiar with how to calculate the characteristic impedance of a transmission line from L', C', r' and g'? (where those are the inductance, etc, per unit length)...
 
berkeman said:
Are you familiar with how to calculate the characteristic impedance of a transmission line from L', C', r' and g'? (where those are the inductance, etc, per unit length)...
Can you show me how to calculate impedance from these parameters ?
 

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