In case of heavy load in transmission section, preventive controls should be taken to avoid transmission line overload. In case that the removal of overload lines can cause cascading trip, power correction should be executed. Load shedding should be minimized if needed. The paper applies prime-dual interior point method to solve nonlinear programming model and achieve adjustment scheme. In order to apply active power correction algorithm to the regional network where generators adjustment is limited, the major adjustment objects extend to PQ bus. According to the combined influence on the overload lines and close-to-limit line, an integrative sensitivity index is presented to ascertain whether a bus load should be increased or decreased. The equal and opposite adjustment in pairs is introduced to simulate that loads migrate in limited area, on this account transmission line overload is eliminated. The simulation results of a local grid show that the proposed algorithm is feasible.