Module 7 : Out of Step Protection

Lecture 25 : Analysis of Power Swings in a Multi – Machine System
 

Determination of Power Swing Locus for Multi Machine System

 


  where      
  Thus,
 

  (6)
 

So, it has to be checked whether is less than or not. If it is less than then electrical center is formed on line L. If it is greater than ZL, then electrical center lies outside the transmission line L.

   
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