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Economic Dispatch With Non-Smooth Objectives—Part II: Dimensional Steepest Decline Method.

Authors :
Zhan, Junpeng
Wu, Q. H.
Guo, Chuangxin
Zhou, Xiaoxin
Source :
IEEE Transactions on Power Systems; Mar2015, Vol. 30 Issue 2, p722-733, 12p
Publication Year :
2015

Abstract

Economic dispatch (ED) considering valve-point effect, multiple fuel options, prohibited operating zones of generation units is a more accurate model compared to a conventional ED model. It is non-smooth and thus evolutionary algorithms (EAs) are so far the only feasible approaches for the model. In Part II of the paper, a new method, the dimensional steepest decline method (DSD), is proposed for the ED with non-smooth objectives. The DSD is based on the local minimum analysis of the ED problem presented in Part I of the paper. The fuel cost's decline rate between each two adjacent singular points is utilized to find the optimal solutions in a serial sequence. The computational complexity of the DSD is analyzed. The DSD has been applied to solve different types of ED problems on different test systems, including large-scale systems. The simulation results show that DSD can obtain more accurate solutions and consume much less time and its advantage is more obvious on large-scale systems, in comparison with the state-of-art EAs. [ABSTRACT FROM PUBLISHER]

Details

Language :
English
ISSN :
08858950
Volume :
30
Issue :
2
Database :
Complementary Index
Journal :
IEEE Transactions on Power Systems
Publication Type :
Academic Journal
Accession number :
101165965
Full Text :
https://doi.org/10.1109/TPWRS.2014.2330618