Question

In a multi-machine interconnected power system, subsequent to a 3-phase fault, the transient stability is examined by:

• A. A only
• B. B only
• C. Either (A) or (B)
• D. Both (A) and (B)

Hint:

Both the Equal-area criterion and the solution of the swing equation are commonly used to assess the transient stability of power systems after a fault.

Answer 1

The Correct Option is D

For a multi-machine interconnected power system, following a 3-phase fault, transient stability is typically examined using:
- Equal-area criterion (A) for analyzing stability.
- Solution of the swing equation (B) to understand the dynamics of the system's response after the fault.
Both methods are used to evaluate the system's transient stability after a fault, making the correct answer Both (A) and (B).