An improved meta-heuristic method to maximize the penetration of distributed generation in radial distribution networks

  • Khoa Hoang Truong
  • Perumal NallagowndenEmail author
  • Irraivan Elamvazuthi
  • Dieu Ngoc Vo
Original Article


This paper proposes a novel scheme based on an improved meta-heuristic method to determine the optimal number of distributed generation (DG) units to be installed in distribution networks for maximum DG penetration. The proposed meta-heuristic method is the quasi-oppositional chaotic symbiotic organisms search (QOCSOS) algorithm, which is the improved version of the original SOS algorithm. QOCSOS integrates two search strategies including quasi-opposition-based learning and chaotic local search into SOS to achieve better performance. In this study, QOCSOS was implemented to find the optimal number, location, size, and power factor of DG units considering different values of DG power factor (unity and non-unity), with the objective of maximum real power loss reduction. The effectiveness of the proposed method was validated on the standard IEEE radial distribution networks including 33, 69, and 118-bus test networks. The results obtained by QOCSOS were compared to those from other methods available in the literature and the standard SOS algorithm. Comparative results revealed that QOCSOS obtained better solutions than other compared methods, and performed greater than SOS. Accordingly, QOCSOS can be a very favourable method to cope with the optimal DG placement problem.


Symbiotic organisms search Distributed generation Power loss reduction Optimal power factor Optimal placement Quasi-oppositional 



This research work is supported by Universiti Teknologi PETRONAS with the help of Department of Electrical and Electronic Engineering.


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Copyright information

© Springer-Verlag London Ltd., part of Springer Nature 2019

Authors and Affiliations

  • Khoa Hoang Truong
    • 1
  • Perumal Nallagownden
    • 1
    Email author
  • Irraivan Elamvazuthi
    • 1
  • Dieu Ngoc Vo
    • 2
  1. 1.Department of Electrical and Electronic EngineeringUniversiti Teknologi PETRONASSeri IskandarMalaysia
  2. 2.Department of Power SystemsHo Chi Minh City University of Technology, VNU-HCMHo Chi Minh CityVietnam

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