Title :
A robust unit commitment algorithm for hydro-thermal optimization
Author :
Li, Chao-an ; Johnson, Raymond B. ; Svoboda, Aha J. ; Tseng, Chung-Li ; Hsu, Eric
Author_Institution :
Pacific Gas & Electr. Co., San Francisco, CA, USA
fDate :
8/1/1998 12:00:00 AM
Abstract :
This paper presents a unit commitment algorithm which combines the Lagrangian relaxation (LR), sequential unit commitment (SUC), and optimal unit decommitment (UD) methods to solve a general hydro-thermal optimization (HTO) problem. We argue that this approach retains the advantages of the LR method while addressing the method´s observed weaknesses to improve overall algorithm performance and quality of solution. The proposed approach has been implemented in a version of PG&E´s HTO program, and test results are presented
Keywords :
dynamic programming; hydrothermal power systems; scheduling; Lagrangian relaxation; algorithm performance; hydro-thermal optimization; optimal unit decommitment; robust unit commitment algorithm; sequential unit commitment; solution quality; unit schedules; Chaos; Constraint optimization; Costs; Dynamic programming; Lagrangian functions; Large-scale systems; Optimization methods; Power systems; Robustness; Testing;
Journal_Title :
Power Systems, IEEE Transactions on
