Which
of the following method is not economical in improving the transient stability
of a power system?
Use of high-speed circuit breakers
Use of higher moment of inertia of the machines
Use
of higher system voltage
Use
of parallel lines
Use of higher moment of inertia of the machines
1.
High speed C.B. isolate the system when fault occurs in the system.
2.
Higher moment of inertia increases machine's stability.
3.
Parallel lines reduce
Use
of higher system voltage and use of parallel lines is used to improve the
steady state stability not transient stability.
So,
use of higher moment of inertia of machine is not economical for improvement of
transient stability.
Hence,
the correct option is (B).
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