Question
Download Solution PDFDirection: The following item consists of two statements, one labelled as ‘Statement (I)’ and the other as ‘Statement (II)’. Examine these two statements carefully and select the answers to these items using the code given below:
Statement (I): Stability of a power system can be improved by using parallel transmission lines.
Statement (II): Two transmission lines in parallel will increase the impedance between sending end and receiving end compared to single line.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFSteady-state stability of a power system is
\({P_{max}} = \frac{{EV}}{X}\)
We can increase the steady-state stability by decreasing the reactance X.
In a double circuit line where two transmission lines are connected in parallel, the reactance is less than the single line circuit and hence the stability can be improved.
Therefore, Statement I is true but Statement II is false.
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