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	Optimal Power Flow	Ekonomisk drift (ED)	Unit Commitment
Ämnesområde	Elektroteknik	Elektroteknik	Elektroteknik
Familj	Process / pipeline	Process / pipeline	Process / pipeline
Ursprungsår	1962	1958	1959
Upphovsperson	Jean Carpentier	Lester K. Kirchmayer	Charles J. Baldwin
Typ	Nonlinear constrained optimization for power system operation	Continuous optimization for allocating power output among committed generators	Combinatorial optimization for generator turn-on/turn-off scheduling
Ursprungskälla	Carpentier, J. (1962). Contribution à l'étude du dispatching économique. Bulletin de la Société Française des Électriciens, 8(3), 431-447.	Kirchmayer, L. K. (1958). Economic Operation of Power Systems. Wiley & Sons.	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.
Alias	OPF, Economic Dispatch with Constraints	ED, Least-Cost Generation Dispatch	UC, Generator Commitment, Thermal Unit Scheduling
Närliggande	3	3	3
Sammanfattning	Optimal Power Flow (OPF) is a fundamental optimization framework for computing the most economical and secure operating point of an electrical power system. Introduced by Jean Carpentier in 1962, OPF minimizes operational costs (fuel, losses, or other expenses) while satisfying physical and operational constraints. Modern electric grids depend on OPF for real-time economic dispatch, security analysis, and planning, making it one of the most important problems in power systems engineering.	Economic Dispatch (ED) is the process of optimally allocating power output among committed generators to meet demand at minimum fuel cost. Introduced by Kirchmayer in 1958, ED is a fundamental real-time optimization problem solved every few minutes in power system operations. Unlike Unit Commitment (which decides generator on/off), ED assumes generators are already committed and focuses on splitting load most economically. ED's rapid feedback enables efficient real-time power plant operations.	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.