Approximate calculation of voltage in three-phase primary distribution feeder

Daisuke Iioka, Kubou Iwata, Non Hisashi Kondo, Non Takuma Sakaguchi, Non Takaya Shigetou, Toshiro Matsumura

Research output: Contribution to journalArticlepeer-review


An approximate method to calculate voltage in three-phase primary distribution feeder has been proposed. Generally, nonlinear simultaneous equations have been solved to calculate the voltage in power system since the dependence of electrical equipment on voltage is represented by exponential model such as constant power load, constant current load and constant impedance load. The nonlinear simultaneous equations were transformed to linear simultaneous equations by the proposed method. As a result, the proposed method can calculate the voltage without convergence calculations. It was found that the approximate value of voltage in the three-phase primary distribution feeder is in good agreement with the exact value.

Original languageEnglish
Pages (from-to)16-22
Number of pages7
JournalIEEJ Transactions on Power and Energy
Issue number1
Publication statusPublished - 2012 Feb 10
Externally publishedYes


  • Distribution system
  • Voltage profile
  • Voltage sensitivity

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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