Optimal Voltage Control Strategy for Voltage Regulators in Active Unbalanced Distribution Systems Using Multi-Agents

Ahmed Bedawy, Naoto Yorino, Yoshifumi Zoka, Yutaka Sasaki, K. Mahmoud

Research output: Contribution to conferenceAbstractScientificpeer-review


The rapid increase in the installation of renewable energy sources, particularly solar photovoltaic (PV) sources associated with unbalanced features of distribution systems (DS), disturbs the classic control strategy of voltage regulation devices and causes voltage violation problems. This paper proposes an effective control strategy for voltage regulators in the DS based on the voltage sensitivity using a multi-agent system (MAS) architecture. The features of the unbalanced distribution system (UDS) with the PV and different types and configurations of voltage regulators are considered in the proposed strategy. The novelty of the proposed method lies in realizing both the control optimality of minimizing voltage violations and the flexibility to accommodate changes in the DS topology using an MAS scheme. An advantageous feature of using the MAS scheme is the robust control performance in normal operation and against system failure. Simulation studies have been conducted using IEEE 34-node and 123-node distribution test feeders considering high PV penetration and different sun profiles. The results show that the proposed voltage control strategy can optimally and effectively manage the voltage regulators in the UDS, which decrease their operation stresses and minimize the overall voltage deviation.
Original languageEnglish
Number of pages1
Publication statusPublished - 1 Aug 2020
MoE publication typeNot Eligible
EventIEEE Power and Energy Society General Meeting - Virtual, Online
Duration: 2 Aug 20206 Aug 2020


ConferenceIEEE Power and Energy Society General Meeting
Abbreviated titlePESGM
CityVirtual, Online
OtherVirtual event


  • Robust control
  • Regulators
  • Sensitivity
  • Topology
  • Voltage control
  • Sun
  • Stress


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