Lecture 25 :
Analysis of Power Swings in a Multi – Machine System
Example 1 (contd..)
Solution:
(b)
Now consider the transmission line ‘b'. For forming the two machine equivalent, transmission line ‘b' is disconnected
from the system and Zbus is formed by inverting Ybus.
Since we are considering only the buses 1 and 2 across which line ‘b' is connected, we can ignore the third row and third column of the Zbus matrix. Thus, the reduced system model is given by,
