Coordinated BESS and LRT control for voltage stabilization of a PV-supplied microgrid

Khoa Le Dinh*, Yasuhiro Hayashi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


This paper proposes a coordinated control method for battery energy storage systems (BESSs) and load-ratio control transformer (LRT) to control the voltage of a middle-voltage 6.6-kV photovoltaic (PV)-supplied microgrid (MG). Each local BESS minimizes the active power flow through the feeder bus where it is installed. A central BESS minimizes the power flow from the utility to the MG through the interconnection point where it is installed, which in turn limits the load bus voltages in the MG, such as those supplied by PV systems and the utility. This paper proposes a central BESS structure which can act as a distribution static compensator when its batteries are fully charged or fully discharged. MGs with loop and radial structures are studied to evaluate the effectiveness of the proposed method. MATLAB/Simulink is used to simulate an MG model using actual PV data and residential loads from Ota City, Japan. Experiments are carried out on ANSWER (Active Network System with Energy Resources) to demonstrate the proposed control method.

Original languageEnglish
Pages (from-to)875-884
Number of pages10
JournalIEEJ Transactions on Power and Energy
Issue number10
Publication statusPublished - 2014 Jan 1


  • Battery energy storage system
  • Compensation
  • Distribution static compensator
  • Inverter-based
  • PV system
  • Voltage control

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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