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Open AccessArticle

A High-Performance Stochastic Fractal Search Algorithm for Optimal Generation Dispatch Problem

1
Power System Optimization Research Group, Faculty of Electrical and Electronics Engineering, Ton Duc Thang University, Ho Chi Minh City 700000, Vietnam
2
Department of Electrical Engineering, The University of Da Nang, University of Science and Technology, Da Nang city 550000, Vietnam
3
Center of Excellence for Automation and Precision Mechanical Engineering, Nguyen Tat Thanh University, Ho Chi Minh City 700000, Vietnam
4
Modeling Evolutionary Algorithms Simulation and Artificial Intelligence, Faculty of Electrical & Electronics Engineering, Ton Duc Thang University, Ho Chi Minh City 700000, Vietnam
*
Authors to whom correspondence should be addressed.
Energies 2019, 12(9), 1796; https://doi.org/10.3390/en12091796
Received: 19 April 2019 / Revised: 6 May 2019 / Accepted: 7 May 2019 / Published: 11 May 2019
(This article belongs to the Special Issue Applications of Heuristic Methods to Electrical Power Engineering)
This paper proposes applications of a modified stochastic fractal search algorithm (MSFS) to solve the economic load dispatch problem (ELD) in which valve-point effects, prohibited operating zones, power losses in all conductors, multi-fuel sources and other constraints of power system are taken into consideration. The proposed method is first developed in the study by performing two modifications on two procedures of new solution generation from conventional stochastic fractal search (SFS). The first modification is used to change the strategy of producing new solutions of the first and the second update procedures while the second one is to newly update the worst solutions in the first update process and the best solutions in the second update process. These modifications have major influence on the solution search performance of the proposed method. All improvements of the proposed method can be illustrated by solving and analyzing results from various test systems with different system scales including 3-unit, 6-unit, 10-unit, and 20-unit systems. Comparison of results obtained by MSFS, SFS, and other existing methods indicates that the proposed MSFS method is more effective and robust than compared methods in terms of solution quality, high-quality solution search stability and convergence process. Consequently, the proposed method should be used as a very favorable optimization method for the ELD problem and it should be tried for other optimization problems in electrical engineering. View Full-Text
Keywords: modified stochastic fractal search algorithm; thermal generating units; total fuel cost; fitness function; optimal solution modified stochastic fractal search algorithm; thermal generating units; total fuel cost; fitness function; optimal solution
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MDPI and ACS Style

Pham, L.H.; Duong, M.Q.; Phan, V.-D.; Nguyen, T.T.; Nguyen, H.-N. A High-Performance Stochastic Fractal Search Algorithm for Optimal Generation Dispatch Problem. Energies 2019, 12, 1796. https://doi.org/10.3390/en12091796

AMA Style

Pham LH, Duong MQ, Phan V-D, Nguyen TT, Nguyen H-N. A High-Performance Stochastic Fractal Search Algorithm for Optimal Generation Dispatch Problem. Energies. 2019; 12(9):1796. https://doi.org/10.3390/en12091796

Chicago/Turabian Style

Pham, Ly H.; Duong, Minh Q.; Phan, Van-Duc; Nguyen, Thang T.; Nguyen, Hoang-Nam. 2019. "A High-Performance Stochastic Fractal Search Algorithm for Optimal Generation Dispatch Problem" Energies 12, no. 9: 1796. https://doi.org/10.3390/en12091796

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