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<p>Within the research project VITREOUSGRID, a power-based linear approach for state estimation in radial medium-voltage distribution grids is presented. It utilizes linear power balance equations, thereby enabling robust state estimation even under low measurement penetration and randomly distributed measurement locations. Initial simulation results on a real medium-voltage grid demonstrate that both the estimation of nodal voltage magnitudes and line currents achieves accuracy comparable to established weighted least squares methods. At the same time, the scheme yields a unique solution due to its underlying linear power balance, such that convergence issues arising from the estimation procedure are systematically precluded. The proposed approach is therefore particularly well suited for application in weakly observable radial medium-voltage distribution grids.</p>

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Leistungsbasierte Netzzustandsermittlung: ein alternativer Ansatz aus Vitreousgrid

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年7月17日

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  • Wendelin Angermann,
  • Robert Schürhuber,
  • Robert Schmaranz,
  • Martin Ruhhütl,
  • Andreas Abart,
  • Thomas Wieland,
  • David Grubinger,
  • Maria Aigner,
  • Gregor Taljan,
  • Roland Bergmayer,
  • Christian Ammer,
  • Thomas Schuster,
  • Elisabeth Hufnagl

摘要

Within the research project VITREOUSGRID, a power-based linear approach for state estimation in radial medium-voltage distribution grids is presented. It utilizes linear power balance equations, thereby enabling robust state estimation even under low measurement penetration and randomly distributed measurement locations. Initial simulation results on a real medium-voltage grid demonstrate that both the estimation of nodal voltage magnitudes and line currents achieves accuracy comparable to established weighted least squares methods. At the same time, the scheme yields a unique solution due to its underlying linear power balance, such that convergence issues arising from the estimation procedure are systematically precluded. The proposed approach is therefore particularly well suited for application in weakly observable radial medium-voltage distribution grids.