Dynamic Volt-VAR Control Application on High Penetration Photovoltaics System Against SVC Usage

Sandro Sitompul, Haruka Maeda, Ken Shimomukai, Goro Fujita

Research output: Contribution to journalArticlepeer-review


Voltage rise is a significant challenge in the application of high-penetration solar photovoltaics (PV) to transmission systems. One explanation is a mismatch between PV power and load demand, which occurs regularly in Japan around April and May. Voltage violations occur when voltage levels exceed the allowed limits. To prevent voltage violations, many methods have been proposed, including volt-VAR control on inverters. The effect of employing a dynamic volt-VAR control rather than a static volt-VAR control in a high-penetration photovoltaic (PV) system is compared to that of using a static VAR compensator (SVC) in this study. The reactive power involvement of the PV inverter can be adjusted using dynamic volt-VAR control, which takes into consideration the inverter's available reactive power capacity. The amount of available capacity will influence how forceful the control is, which will be reflected in the droop gain. The controls are tested on the transmission system for a year to assess the number of uncompensated voltage events. The number of violations that the control cannot compensate for affects how much reactive power the SVC must provide.

Original languageEnglish
Pages (from-to)201-207
Number of pages7
JournalIEEJ Transactions on Power and Energy
Issue number2
Publication statusPublished - 2024


  • high penetration PV
  • reactive power control
  • voltage regulating devices

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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