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Compensated Load Flow Solutions for Distribution System State Estimation

Author

Listed:
  • Catalina Gómez-Quiles

    (Department of Electrical Engineering, University of Seville, 41092 Seville, Spain)

  • Esther Romero-Ramos

    (Department of Electrical Engineering, University of Seville, 41092 Seville, Spain)

  • Antonio de la Villa-Jaén

    (Department of Electrical Engineering, University of Seville, 41092 Seville, Spain)

  • Antonio Gómez-Expósito

    (Department of Electrical Engineering, University of Seville, 41092 Seville, Spain)

Abstract

State estimation of distribution systems typically relies on measurement sets with very low redundancy levels. In this paper, this fact is exploited by first solving a conventional load flow, using exclusively a critical set of measurements, and then compensating the solution to account for the few redundant measurements available. This leads to a suboptimal but sufficiently accurate estimate. It is shown how the sparse triangular factorization of the load flow Jacobian matrix can be fully exploited throughout the compensation-based procedure, preventing in this way the ill-conditioning associated with the gain matrix arising in the conventional least-squares formulation. Simulation results are provided for measurement configurations customarily found in distribution systems, showing the potential advantages of the proposed methodology.

Suggested Citation

  • Catalina Gómez-Quiles & Esther Romero-Ramos & Antonio de la Villa-Jaén & Antonio Gómez-Expósito, 2020. "Compensated Load Flow Solutions for Distribution System State Estimation," Energies, MDPI, vol. 13(12), pages 1-13, June.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:12:p:3100-:d:371937
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