Consider the following statements regarding Equal area criteria:
1. It is a graphical solution to the swing equation.
2. For transient stability the accelerating area should be less than decelerating area.
3. The equal area criterion for the determination of transient stability of a synchronous machine connected to an infinite bus ignores line as well as synchronous machine resistances and series inductance.
Which of the above statements are correct?
1
1, 2 and 3
2
2 and 3 only
3
1 and 2 only
4
1 and 3 only