Module 7 : Out of Step Protection

Lecture 26 : Power Swing Detection, Blocking and Out-of-Step Relays

 

Review Questions

1.

How can we distinguish a power swing from a fault?

2. Why is it necessary for equipping distance relays with swing detection and blocking mechanism?
3. Explain the basic principle of working of:
 

1) Out of step blocking relays
  2) Out of step tripping relays
   
   
   
   
   
   
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