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	Fast Decoupled Power Flow	Zadanie alokacji jednostek wytwórczych
Dziedzina	Elektrotechnika	Elektrotechnika
Rodzina	Process / pipeline	Process / pipeline
Rok powstania	1972	1959
Twórca	Brian Stott, Octave Alsac	Charles J. Baldwin
Typ	Decoupled iterative solution method for power system analysis	Combinatorial optimization for generator turn-on/turn-off scheduling
Źródło pierwotne	Stott, B., & Alsac, O. (1972). Fast decoupled load flow. IEEE Transactions on Power Apparatus and Systems, 91(3), 859-869.	Baldwin, C. J., Dale, K. M., & Dittrich, R. F. (1959). A study of the economic shutdown of generating units in daily dispatch. AIEE Transactions, 78(3), 272-282.
Inne nazwy	FDLF, Fast Decoupled Load Flow	UC, Generator Commitment, Thermal Unit Scheduling
Pokrewne	3	3
Podsumowanie	The Fast Decoupled Load Flow (FDLF) method, introduced by Stott and Alsac in 1972, exploits the weak coupling between active and reactive power in power systems to accelerate convergence beyond standard Newton-Raphson. By decoupling the equations and using constant, approximate Jacobians, it reduces computation per iteration while maintaining acceptable accuracy for most practical systems. This method remains widely used in operational software for its speed and numerical stability.	Unit Commitment (UC) is the problem of deciding which power generation units should be switched on or off over a planning horizon (typically 24-168 hours) to minimize total operating cost while meeting demand and reserve requirements. Introduced by Baldwin et al. in 1959, UC is a fundamental scheduling problem in power system operations, combining combinatorial optimization (which units to commit) with continuous optimization (optimal power output). UC remains one of the most important and computationally challenging problems in power systems.