Arrangement of low-voltage network for minimization of number of pole transformers in distribution system

T. Sugita, D. Iioka, Y. Yokomizu, T. Matsumura, Kenji Oishi, Eiichiro Umemura, Takuji Mitsuishi

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)


This paper proposes a new method to search the optimum low-voltage distribution network which can supply sufficient power to customer's loads by a minimum number of pole transformers. The construction of pole transformers and low-voltage lines are arranged under the requirement that the voltage distribution along the low-voltage line remains within a pre-determined tolerance level. It is found that there is a chance the number of transformers in the optimum system decreases by 50 % compared with a current system, while the total length of the low-voltage lines is longer by 50 %. As a result, it is possible to reduce the construction cost of the distribution system by 3 % - 10 %, depending on the load density. The higher the load density in the area is, the better is reduction in the construction cost.

Original languageEnglish
Article number448-101
Pages (from-to)181-185
Number of pages5
JournalSeries on Energy and Power Systems
Publication statusPublished - 2004 Dec 1
Externally publishedYes
EventProceedings of the Seventh IASTED International Conference on Power and Energy Systems - Clearwater Beach, FL, United States
Duration: 2004 Nov 282004 Dec 1


  • Low-voltage line
  • Optimum construction
  • Pole transformer
  • Power distribution
  • Power system planning

ASJC Scopus subject areas

  • Engineering(all)


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