Thermal unit commitment with nonlinear power flow constraints

Author

Murillo-Sánchez, Carlos ; Thomas, Robert J.

Author_Institution

Sch. of Electr. Eng., Cornell Univ., Ithaca, NY, USA

Volume

1

fYear

1999

fDate

31 Jan-4 Feb 1999

Firstpage

484

Abstract

A formulation of the thermal unit commitment problem including nonlinear power flow constraints is presented, making the use of more realistic constraint models possible. It also allows potential VAr production to be used as a criterion for the commitment of generators in strategic locations of the network. The Lagrangian Relaxation framework and a variable duplication technique are employed, permitting exploitation of the separation structure of the dual cost. Some results for small to medium-sized systems are reported

Keywords

load flow; power generation scheduling; relaxation; thermal power stations; Lagrangian Relaxation framework; constraint models; dual cost; generators commitment; medium-sized systems; nonlinear power flow constraints; potential VAr production; power generation scheduling; separation structure; small-sized systems; strategic locations; thermal unit commitment; variable duplication technique; Cost function; Dynamic programming; Lagrangian functions; Load flow; Power generation; Production; Reactive power; State-space methods; Thermal engineering; Time factors;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Engineering Society 1999 Winter Meeting, IEEE

Conference_Location

New York, NY

Print_ISBN

0-7803-4893-1

Type

conf

DOI

10.1109/PESW.1999.747503

Filename

747503