A capacity based Lagrangian relaxation unit commitment with ramp rate constraints

Author

Peterson, William L. ; Brammer, Steven R.

Author_Institution

Stagg Syst. Inc., Houston, TX, USA

Volume

10

Issue

2

fYear

1995

fDate

5/1/1995 12:00:00 AM

Firstpage

1077

Lastpage

1084

Abstract

This paper presents a Lagrangian relaxation based technique for solving the power system thermal unit commitment problem. As a general approach, Lagrangian relaxation has proven to be an efficient method of solving the thermal unit commitment problem. The specific technique described in this paper focuses on finding a feasible commitment, then attempting to improve on the optimality of the solution. A new method for processing ramp rate constraints is also introduced. The algorithm has been implemented on a large scale power system and results are shown using actual power system data

Keywords

digital simulation; load distribution; power system analysis computing; power system planning; relaxation theory; scheduling; thermal power stations; Lagrangian relaxation; algorithm; generation scheduling; large scale power system; ramp rate constraints; thermal power plants; unit commitment; Cost function; Fuel economy; IEEE members; Lagrangian functions; Large-scale systems; Power generation; Power generation economics; Power industry; Power system economics; Power systems;

fLanguage

English

Journal_Title

Power Systems, IEEE Transactions on

Publisher

ieee

ISSN

0885-8950

Type

jour

DOI

10.1109/59.387954

Filename

387954