Optimal Planning of Secondary Power Distribution Systems Considering Renewable and Storage Sources: An Energy Management Approach

Keywords: Distributed energy resources, energy management, metaheuristics, secondary distribution systems planning, solar and wind generation

Abstract

This study focuses on the optimal planning of secondary power distribution systems considering distributed renewable generators (DG) and energy storage systems (ESS) to minimize expansion costs. The methodology solves a mixed integer non-linear mathematical model that describes the planning problem, including the operating and technical aspects of the secondary power distribution system. Such methodology uses an iterated local search algorithm and a two-stage load flow decomposition method to solve said problem. The two-stage load flow decomposition method finds the optimal operation of the storage devices and the low-voltage distribution system for each solution proposed by the iterated local search algorithm; thus, optimal energy management is achieved for the best solution. The proposed methodology was tested on a real medium-sized secondary power distribution system to establish its effectiveness. The results obtained show a reduction of 51.97 % in the total energy purchase cost of the system and a decrease of 3.02 % in the installation costs of the secondary circuits and distribution transformers when DG and ESS are considered. In conclusion, the results show that the integration of these distributed energy resources into the distribution system planning problem increases the profits of distribution companies from energy purchase and sale and reduces their fixed costs.

Author Biographies

Alejandro Valencia-Díaz*, Universidad Tecnológica de Pereira, Colombia

Universidad Tecnológica de Pereira, Pereira-Colombia, alejovd4512@utp.edu.co

Ricardo A. Hincapié Isaza, Universidad Tecnológica de Pereira, Colombia

Universidad Tecnológica de Pereira, Pereira-Colombia, ricardohincapie@utp.edu.co

Ramón A. Gallego-Rendón, Universidad Tecnológica de Pereira, Colombia

Universidad Tecnológica de Pereira, Pereira-Colombia, ragr@utp.edu.co

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How to Cite
[1]
A. Valencia-Díaz, R. A. Hincapié Isaza, and R. A. Gallego-Rendón, “Optimal Planning of Secondary Power Distribution Systems Considering Renewable and Storage Sources: An Energy Management Approach”, TecnoL., vol. 25, no. 54, p. e2354, Jun. 2022.

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Published
2022-06-16
Section
Research Papers

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