Bachelorarbeit, 2008
47 Seiten
Economic dispatch (ED) is the process of allocating the total power demand among available generating units in a way that minimizes the total operating cost while satisfying system constraints.
Valve-point effects refer to the ripples in the cost function of a generator caused by the opening of steam valves, making the optimization problem non-convex and more difficult to solve with traditional methods.
The report explores four versions of Particle Swarm Optimization: traditional PSO, New PSO (NPSO), Self-Adaptive PSO (APSO), and Chaotic PSO (CPSO).
Self-Adaptive PSO (APSO) was found to be superior in terms of solution quality, convergence speed, and robustness, although it showed a higher tendency for premature convergence.
A mechanism was devised where the difference between demanded load and total power is shared evenly among units that have not yet reached their generating limits.
PSO is advantageous due to its simplicity, ability to handle non-linear and non-convex problems, and its efficiency in searching large solution spaces compared to traditional gradient methods.
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