In a multi machine interconnected system, subsequently to a 3-phase
fault, the transient stability is examined by
Equal-area
criterion
Solution
of swing equation
Either
by equal-area criterion or by solution of swing equation
Combination
of equal-area criterion and solution of swing equation
Solution
of swing equation
Transient
stability analysis of a multi machine system uses classical approach i.e. node
elimination by matrix algebra that uses swing equation before fault and past
fault.
Hence,
the correct option is (B).
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