In today’s competitive electricity market, it is not possible to settle all contracted transactions of power because\ud of congestion in transmission lines. Usually, the independent system operator seeks to eliminate congestion by\ud rescheduling output power of the generators. But all generators may not have the same effect (sensitivity) on the\ud power flow of the congested lines, so this is not an economical way to reschedule output power of all generators\ud for managing congestion. Therefore, in this paper, active power generator sensitivity factor of the generators to\ud the congested lines have been utilized to ascertain the number of generators participating in congestion\ud management. The effectiveness and feasibility of the proposed algorithm have been tested on IEEE 30 bus\ud syste
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