A Cost-Effective Trade-off in Distribution System Expansion Planning Between Construction of Conventional/Renewable Distributed Energy Sources in Long Term

Articles in Press

Document Type : Research paper

Authors

1 Department of Electrical Engineering, University of Zanjan, Zanjan, Iran.

2 Technical Department, Kooshkan Transformers Company, Zanjan, Iran.

3 Department of Electrical and Computer Engineering, University of Connecticut, Storrs, CT, USA.

Abstract

Nowadays, with the detrimental impacts of air pollution on human health and its significant societal expenses, it has been imperative to utilize renewable energy sources (RESs) and energy storage systems (ESSs). This study introduces a new objective function aimed at achieving a long-term optimal plan where it contrasts the outcomes of meeting network load demand with and without the integration of renewable/non-renewable distributed energy resources (DERs). The analysis considers installation and operational costs, addressing uncertainties through Monte-Carlo and scenario-based methodologies. The proposed problem is structured as a convex optimization model. Simulations are conducted on the IEEE 33-bus system, showcasing the model’s efficacy through cost efficiency and reduced emission expenses. The study confirms that the investment in renewable energy resources and ESS units can be recouped in less than five years. It was observed that in the long-term, there is a cost reduction of 29.4\% when DER units are incorporated. Also, the emission cost for the horizon year is diminished by 43.2\% compared to the case where the DERs are absent.

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References

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Journal of Operation and Automation in Power Engineering

Articles in Press, Corrected Proof
Available Online from 01 August 2025

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History

  • Receive Date: 13 June 2024
  • Revise Date: 05 July 2024
  • Accept Date: 11 July 2024
  • First Publish Date: 17 July 2024

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