Zero Seq. Line Impedance angle higher than Positive Seq. angle

[Uquresh1]

My transmission line's Zero seq. impedance angle (89 deg)is higher than its positive seq. impedance angle (79 deg). Is this OK?

 

[davidbeach]

Seems odd, particularly that it would be that high. Probably a math error somewhere.

 

[arrehman1]

Just to give you a comparison, here are some values for comparison

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 <tr height=20 style='height:15.0pt'>
  <td height=20 class=xl65 width=64 style='height:15.0pt;width:48pt'>miles</td>
  <td class=xl65 width=64 style='border-left:none;width:48pt'>Z1 mag</td>
  <td class=xl65 width=64 style='border-left:none;width:48pt'>Z1 angle</td>
  <td class=xl65 width=64 style='border-left:none;width:48pt'>Z0 mag</td>
  <td class=xl65 width=64 style='border-left:none;width:48pt'>Z0 angle</td>
 </tr>
 <tr height=20 style='height:15.0pt'>
  <td height=20 class=xl65 align=right style='height:15.0pt;border-top:none'>4</td>
  <td class=xl65 align=right style='border-top:none;border-left:none'>2.8</td>
  <td class=xl65 align=right style='border-top:none;border-left:none'>81.62</td>
  <td class=xl65 align=right style='border-top:none;border-left:none'>9</td>
  <td class=xl65 align=right style='border-top:none;border-left:none'>80.89</td>
 </tr>
 <tr height=20 style='height:15.0pt'>
  <td height=20 class=xl65 align=right style='height:15.0pt;border-top:none'>2.3</td>
  <td class=xl65 align=right style='border-top:none;border-left:none'>1.5</td>
  <td class=xl65 align=right style='border-top:none;border-left:none'>83.15</td>
  <td class=xl65 align=right style='border-top:none;border-left:none'>6.44</td>
  <td class=xl65 align=right style='border-top:none;border-left:none'>82.72</td>
 </tr>
 <tr height=20 style='height:15.0pt'>
  <td height=20 class=xl65 align=right style='height:15.0pt;border-top:none'>0.85</td>
  <td class=xl65 align=right style='border-top:none;border-left:none'>0.56</td>
  <td class=xl65 align=right style='border-top:none;border-left:none'>82.3</td>
  <td class=xl65 align=right style='border-top:none;border-left:none'>2.3</td>
  <td class=xl65 align=right style='border-top:none;border-left:none'>82.42</td>
 </tr>
 <tr height=20 style='height:15.0pt'>
  <td height=20 class=xl65 align=right style='height:15.0pt;border-top:none'>36</td>
  <td class=xl65 align=right style='border-top:none;border-left:none'>29.4</td>
  <td class=xl65 align=right style='border-top:none;border-left:none'>65.9</td>
  <td class=xl65 align=right style='border-top:none;border-left:none'>87.7</td>
  <td class=xl65 align=right style='border-top:none;border-left:none'>73.7</td>
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[arrehman1]

The above post didn't come out right... here it is again...

miles Z1 mag Z1 angle Z0 mag Z0 angle
4 2.8 81.62 9 80.89
2.3 1.5 83.15 6.44 82.72
0.85 0.56 82.3 2.3 82.42
36 29.4 65.9 87.7 73.7

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[arrehman1]

one more time...

Mag values are in per-unit with 100MVA and 115kV base.

miles: 4
Z1 mag: 2.8
Z1 angle: 81.62
Z0 mag: 9
Z0 angle: 80.9


miles: 2.3
Z1 mag: 1.5
Z1 angle: 83.15
Z0 mag: 6.45
Z0 angle: 82.72


miles: 0.85
Z1 mag: 0.56
Z1 angle: 82.3
Z0 mag: 2.3
Z0 angle: 82.42


miles: 36
Z1 mag: 29.4
Z1 angle: 65.9
Z0 mag: 87.7
Z0 angle: 73.7

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