DocumentCode
837880
Title
Combination of Lagrangian-relaxation and linear-programming approaches for fuel-constrained unit-commitment problems
Author
Tong, S.K. ; Shahidehpour, S.M.
Author_Institution
Dept. of Electr. & Comput. Eng., Illinois Inst. of Technol., Chicago, IL, USA
Volume
136
Issue
3
fYear
1989
fDate
5/1/1989 12:00:00 AM
Firstpage
162
Lastpage
174
Abstract
The authors present a new method for determining the unit-commitment schedule of a power system which operates under fuel utilisation constraints. The proposed method employs the Lagrangian relaxation approach to determine a feasible suboptimal schedule. Then, linear programming is applied to improve the feasible solution, as well as seeking the optimal economic dispatch of the committed generators. The algorithm is implemented on a VAX11/780 machine to solve the unit-commitment problem of a system which consists of 26 thermal units and 6 fuel-constrained units. Numerical results presented in this paper describe the usefulness and practicality of the proposed method.<>
Keywords
linear programming; load dispatching; power system analysis computing; Lagrangian-relaxation; VAX11/780 machine; fuel utilisation constraints; linear-programming; optimal economic dispatch; power system; suboptimal schedule; unit-commitment schedule; Linear programming; Power generation dispatch;
fLanguage
English
Journal_Title
Generation, Transmission and Distribution, IEE Proceedings C
Publisher
iet
ISSN
0143-7046
Type
jour
Filename
18945
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