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This is the second paper in a two-part report on linear programming (LP) applied to power system security control calculations. The advantages of an LP approach are complete computational reliability and very high speed, making it suitable for real-time or study-mode purposes. Both corrective and preventive control strategies are dealt with. Active-power control is exercised over generators, phase shifters and hvdc links. Load shedding and emergency start-up of plant are included. Part I1 presented the basic LP formulation, algorithm and computational details. Part II is concerned with applications to practical power systems.