Question: ( 1 1 2 ^ { text { nd } } ) Exercise: Power systems connected by tie line. Two power systems

\(112^{\text {nd }}\) Exercise: Power systems connected by tie line.
Two power systems A and B are interconnected by a tie line. The parameters of the two grids are:
Due to a failure, a generator which was generating 500 MW is disconnected from area B . After primary frequency control, the power flow in the line has increased by 300 MW from A to B. Frequency in the two areas has dropped to \(49,95\mathrm{~Hz}\).
Q2.1) Calculate the regulating energy and the global droop of each area.
Q2.2) Calculate the value of the frequency and the variation of the power flow in the line after secondary frequency control.
\ ( 1 1 2 ^ { \ text { nd } } \ ) Exercise: Power

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