Computation of locational and hourly maximum output of a distributed generator connected to a distribution feeder

Yasuhiro Hayashi, Junya Matsuki, Yuji Hanai, Shinpei Hosokawa, Naoki Kobayashi

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Recently, the total number of distributed generation such as photovoltaic generation systems and wind turbine generation systems connected to a distribution network has drastically increased. Distributed generation using renewable energy can reduce the distribution loss and emission of CO 2. However, the distribution network with the distributed generators must be operated while maintaining the reliability of the power supply and power quality. In this paper, the authors propose a computational method to determine the maximum output of a distributed generator under operational constraints [(1) voltage limit, (2) line current capacity, and (3) no reverse flow to bank] at arbitrary connection points and hourly periods. In the proposed method, a three-phase iterative load flow calculation is applied to evaluate the above operational constraints. The three-phase iterative load flow calculation has two simple procedures: (Procedure 1) addition of load currents from the terminal node of the feeder to root one, and (Procedure 2) subtraction of voltage drop from the root node of the feeder to terminal one. In order to check the validity of the proposed method, numerical simulations are performed for a distribution system model. Furthermore, the characteristics of locational and hourly maximum output of a distributed generator connected to a distribution feeder are analyzed using several numerical examples.

Original languageEnglish
Pages (from-to)38-47
Number of pages10
JournalElectrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi)
Volume167
Issue number2
DOIs
Publication statusPublished - 2009 Apr 30

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Keywords

  • Distributed generator
  • Locational and hourly maximum output
  • Reliability of power supply
  • Three-phase load flow calculation

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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