Department of Business Development and Technology

Automated Distribution Networks Reliability Optimization in the Presence of DG Units Considering Probability Customer Interruption: A Practical Case Study

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  • Hassan Karimi, Shiraz University of Technology
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  • Taher Niknam, Shiraz University of Technology
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  • Moslem Dehghani, Shiraz University of Technology
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  • Mohammad Ghiasi, Shiraz University of Technology
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  • Mina Ghasemigarpachi, Shiraz University of Technology, Islamic Azad University
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  • Sanjeevikumar Padmanaban
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  • Sajad Tabatabaee, Islamic Azad University
  • ,
  • Hamdulah Aliev, Tajik Technical University

Automation in power distribution systems and supervisory control and data acquisition (SCADA), which perform network switching automatically and remotely, allows distribution companies to flexibly control distribution power grids. Cross-section switches also has a significant role in the automation in distribution systems, in that the operational optimization of these switches is able to enhance the supply power quality and reliability indicators, and can be a prosperous solution to increase the reliability, efficiency and overall service quality in services to customers. In this regard, in this work, the genetic optimization algorithm (GOA) approach which integrated the Steepest Descend Technique (SDT) is proposed and enhanced based on the features of the mentioned issue to sketch the optimal location and control of automatic and manual cross-section switches and protection relay systems in distribution power systems. The GOA is able to search globally that can prevent the result from locally convergence, also, GOA gives superior primary solutions for the SDT. Thus, the SDT can search locally with higher performance which increase the solutions' accuracy. Therefore, an optimization formulation is proposed to improve the value-based reliability of the suggested layout considering the cost of customer downtime and the costs related to segmentation of switches and relay protection devices. Also, a distributed generation (DG) system in distribution networks is considered based on the islanded state of generation units. The effectiveness of the optimal suggested procedure is evaluated and represented via performing a practical test system in the distribution network of Ahvaz city in Iran. The results show that using proposed method and by optimally allocating switches maneuver, energy losses without switches are reduced from 310.17 (MWh) to 254.2 (MWh), and also by using DG, losses are reduced from 554.01 to 533.61 which confirms the ability and higher accuracy of the proposed method to improve reliability indices.

Original languageEnglish
JournalIEEE Access
Pages (from-to)98490-98505
Number of pages16
Publication statusPublished - 2021

Bibliographical note

Publisher Copyright:
© 2013 IEEE.

    Research areas

  • Automated distribution networks, customer interruption cost model, distributed generation, genetic algorithm, reliability, sectionalizing switch placement

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