A Practical Approach for Coordinated Transmission Switching and OLTCs’ ‎Tap Adjustment: DIgSILENT-Based Improved PSO Algorithm

Document Type : Research paper

Authors

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

2 Planning and Research Deputy, Zanjan Regional Electric Company, Zanjan, Iran

3 Faculty of Electrical and Computer Engineering, Urmia University, Urmia, Iran

4 Saba Power Plant, Operation and Maintenance Company, Tehran, Iran

5 Hydro Quebec Research Institute, Quebec, Canada

Abstract

Transmission lines switching and tap adjustment of power transformers are short-term alternatives to enhance the flexibility of power system operation. By a proper implementation of these alternatives, the operational problems such as lines congestion, bus voltage violations and excessive power losses can be alleviated. Traditionally, these two alternatives are applied separately due to the complexity of their simultaneous implementation as well as their coordination. In this paper, a DIgSILENT-based improved particle swarm optimization (IPSO) algorithm is proposed to implement the transmission switching and coordinated voltage control of power transformers, concurrently. The IPSO is implemented in DPL environment of Powerfactory-DIgSILENT, as a powerful software package commonly used by the electrical utilities. The proposed approach is applied to IEEE-14 bus system and the real transmission network of Zanjan Regional Electric Company (ZREC) located in Iran, in different scenarios considering all the existing practical constraints. The obtained results verify the effectiveness of the presented approach.

Keywords

References

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Journal of Operation and Automation in Power Engineering
Volume 9, Issue 2
August 2021
Pages 103-115

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History

  • Receive Date: 18 June 2020
  • Revise Date: 20 October 2020
  • Accept Date: 16 November 2020

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