Reactive power control of power conditioning systems to avoid voltage deviation in high-voltage distribution systems caused by both of photovoltaic generation and electric vehicle charging

Takayuki Shimazu, Akiko Takahashi, Keigo Shimofuji, Shigeyuki Funabiki, Takeshi Nagata

Research output: Contribution to journalArticle


The introduction of electric vehicles (EVs) has been increasing as well as photovoltaic generation (PV) systems. These introductions cause the voltage drop and rise on high-voltage distribution lines, so that voltage deviation will be out of the specified voltage range. As a countermeasure against this problem, the voltage control method with static Var compensators (SVCs) is implemented. However, SVCs are expensive and power losses on the distribution line increase. This paper proposes a novel voltage control method in which power conditioning systems (PCSs) output leading and lagging reactive power aiming to solve the above-mentioned problems. It is clarified that the proposed method is more effective in solution of these problems than compared with the voltage control method using SVCs.

Original languageEnglish
Pages (from-to)416-422
Number of pages7
JournalIEEJ Transactions on Power and Energy
Issue number6
Publication statusPublished - Jan 1 2018



  • Highvoltage distribution system
  • Leading and lagging reactive power
  • Photovoltaic generation
  • Power conditioning system
  • Static var compensator

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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