Reinforcement of the distribution grids to improve the hosting capacity of distributed generation: Multi-Objective Framework

Bahman Ahmadi, Oguzhan Ceylan, Aydogan Ozdemir

Research output: Contribution to journalArticleAcademicpeer-review

10 Citations (Scopus)
62 Downloads (Pure)

Abstract

Excessive penetration of renewable energy resources into the distribution grid without additional preventive measures has led to several operational problems. However, most strategies developed to accommodate more renewable energy units suffered from other operational problems. Therefore, further efforts are needed to address the other key vulnerabilities of the grid in addition to maximizing the hosting capacity. In this regard, this study is devoted to a new multi-objective formulation to maximize the hosting capacity and minimize the total energy losses while satisfying the operational constraints and maximizing the energy transferred to off-peak hours. The Multi-Objective Advanced Gray Wolf Optimization (MOAGWO) algorithm is used as a solution tool. The proposed formulation and solution algorithm are tested on IEEE-33-bus and 69-bus medium voltage test systems. The impacts of energy storage systems, voltage regulators, and static var compensators on the hosting capacity and the objective functions are identified using several scenarios. The results showed that the optimal device type and locations depend on the level of DG penetration. Finally, a comparison according to two popular multi-objective performance indices showed that the quality of the Pareto front distribution obtained by MOAGWO was better than the ones obtained with the two other popular heuristic methods.
Original languageEnglish
Article number109120
Number of pages14
JournalElectric power systems research
Volume217
Early online date10 Jan 2023
DOIs
Publication statusPublished - Apr 2023

Keywords

  • Distributed Generation (DG)
  • Hosting capacity
  • Energy storage system
  • Static var compensator
  • Multi-objective optimization
  • UT-Hybrid-D

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