The connected load at $50Hz$ is $30000Mw$ in area $1$ and $50000Mw$ in area $2.$ The load in each area varies $2\%$ for every $1\mathrm{.}5\%$ change in frequency.

Area$1$ is importing $1500Mw$ from area $2.$ The speed regulation, $R,$ is $4\%$ for all units.

Area $1$ is operating with a spinning reserve of $1500Mw$ spread uniformly over a generation of $5000Mw$ capacity, and area $2$ is operating with spinning reserve of $2000Mw$ spread uniformly over a generation of $9000Mw.$

If the loss of $1500Mw$ load in area $1,$ assuming that there are no supplementary controls. The tie line power is:

$\backslash$table$[[533\mathrm{.}134Mw$