LAPSE

LAPSE:2019.0287
Published Article
LAPSE:2019.0287
A Three-Stage Optimal Approach for Power System Economic Dispatch Considering Microgrids
Wei-Tzer Huang, Kai-Chao Yao, Chun-Ching Wu, Yung-Ruei Chang, Yih-Der Lee, Yuan-Hsiang Ho
February 5, 2019
The inclusion of microgrids (MGs) in power systems, especially distribution-substation-level MGs, significantly affects power systems because of the large volumes of import and export power flows. Consequently, power dispatch has become complicated, and finding an optimal solution is difficult. In this study, a three-stage optimal power dispatch model is proposed to solve such dispatch problems. In the proposed model, the entire power system is divided into two parts, namely, the main power grid and MGs. The optimal power dispatch problem is resolved on the basis of multi-area concepts. In stage I, the main power system economic dispatch (ED) problem is solved by sensitive factors. In stage II, the optimal power dispatches of the local MGs are addressed via an improved direct search method. In stage III, the incremental linear models for the entire power system can be established on the basis of the solutions of the previous two stages and can be subjected to linear programming to determine the optimal reschedules from the original dispatch solutions. The proposed method is coded using Matlab and tested by utilizing an IEEE 14-bus test system to verify its feasibility and accuracy. Results demonstrated that the proposed approach can be used for the ED of power systems with MGs as virtual power plants.
Keywords
distributed energy resources, economic dispatch, improved direct search method, linear programming, microgrid, multi-area
Suggested Citation
Huang WT, Yao KC, Wu CC, Chang YR, Lee YD, Ho YH. A Three-Stage Optimal Approach for Power System Economic Dispatch Considering Microgrids. (2019). LAPSE:2019.0287
Author Affiliations
Huang WT: Department of Industrial Education and Technology, National Changhua University of Education, Changhua 500, Taiwan
Yao KC: Department of Industrial Education and Technology, National Changhua University of Education, Changhua 500, Taiwan [ORCID]
Wu CC: Department of Industrial Education and Technology, National Changhua University of Education, Changhua 500, Taiwan
Chang YR: The Institute of Nuclear Energy Research, Taoyuan City 325, Taiwan
Lee YD: The Institute of Nuclear Energy Research, Taoyuan City 325, Taiwan
Ho YH: The Institute of Nuclear Energy Research, Taoyuan City 325, Taiwan
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Journal Name
Energies
Volume
9
Issue
11
Article Number
E976
Year
2016
Publication Date
2016-11-22
Published Version
ISSN
1996-1073
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Original Submission
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PII: en9110976, Publication Type: Journal Article
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LAPSE:2019.0287
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doi:10.3390/en9110976
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Feb 5, 2019
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CC BY 4.0
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Feb 5, 2019
 
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Original Submitter
Calvin Tsay
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