Optimization of Multi-Objective Function for User-defined Characteristics Recloser and Size of Fault Current Limiters in Radial Networks with Distributed Generation

Document Type : Research Article

Authors

Department of Electrical Engineering, Islamic Azad University, Saveh branch, Saveh, Iran

Abstract

In addition to the many advantages of Distributed Generation (DG) for the distribution networks, they change the direction and increase the level of fault current. These changes may cause the loss of protection coordination of reclosers and fuses in distribution networks. Usually, the operation time of reclosers is determined by two main settings, TDS and IP, but two other parameters (A and B), which are defined by the standards of traditional reclosers, are also influential on the operation time of reclosers. These two parameters can be modified in digital reclosers. In this article, these two characteristics are optimized with TDS and IP to restore protection coordination. For this purpose, first, the location and the size of the DGs are specified, after that to alleviate the effects of the DGs, the location and the impedance of FCLs are optimized by a multi-objective optimization function to reduce the loss, improve voltage profile, and reduce the effects of changes in the feeders’ fault current while DGs are connected to the distribution network. Then, to restore the protection coordination, and to reduce the operating time of the protection equipment, fuse, and recloser, the parameters A, B, TDS, and IP are optimized using a multi-function optimization. To validate the proposed approach, the IEEE 33-bus network in the presence of synchronous DGs and resistive SFCL has been simulated in DIgSILENT software.

Keywords

References

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Computational Intelligence in Electrical Engineering
Volume 14, Issue 2
July 2023
Pages 143-154

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History

  • Receive Date: 06 December 2020
  • Revise Date: 02 February 2021
  • Accept Date: 09 August 2022

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