A robust unit commitment algorithm for hydro-thermal optimization

Author

Li, Chao-an ; Johnson, Raymond B. ; Svoboda, Alva J. ; Tseng, Chung-Li ; Hsu, Eric

Author_Institution

Pacific Gas & Electr. Co., San Francisco, CA, USA

fYear

1997

fDate

11-16 May 1997

Firstpage

186

Lastpage

191

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. The authors 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

control system synthesis; dynamic programming; hydrothermal power systems; load dispatching; load distribution; optimal control; power system control; robust control; Lagrangian relaxation; algorithm performance; electric utilities; hydro-thermal power system optimization; optimal unit decommitment; robust unit commitment algorithm; sequential unit commitment; Chaos; Constraint optimization; Costs; Displays; Lagrangian functions; Large-scale systems; Optimization methods; Power systems; Robustness; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Industry Computer Applications., 1997. 20th International Conference on

Conference_Location

Columbus, OH

Print_ISBN

0-7803-3713-1

Type

conf

DOI

10.1109/PICA.1997.599395

Filename

599395