Three-phase state estimation based on symmetrical components


10th IEEE PES Innovative Smart Grid Technologies Europe, ISGT-Europe 2020, Delft, Netherlands, 26 - 28 October 2020, vol.2020-October, pp.186-190 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 2020-October
  • Doi Number: 10.1109/isgt-europe47291.2020.9248822
  • City: Delft
  • Country: Netherlands
  • Page Numbers: pp.186-190
  • Keywords: Power system state estimation, phasor measurement units, symmetrical components
  • Middle East Technical University Affiliated: Yes


© 2020 IEEE.Voltage imbalance has been neglected so far in transmission system operations; hence state estimation has been performed using positive sequence single-phase equivalent model of the power systems. However, as the number of single-phase renewable energy sources and electric cars at the distribution system, and electric trains, which are supplied via single-phase transformers, connected to the transmission system increase, the imbalance problems at the transmission system will be observed more frequently. Therefore, incorporation of three-phase system model in power system state estimation necessitates. This paper proposes a computationally efficient three-phase state estimation method based on symmetrical components with a limited number of strategically placed PMUs.