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@MASTERSTHESIS{Pacheco:992313,
      author       = {Pacheco, David},
      othercontributors = {Monti, Antonello and Ginocchi, Mirko and Pau, Marco},
      title        = {{S}ensitivity and cost-benefit analysis of state-estimation
                      based voltage control for distribution systems},
      school       = {Rheinisch-Westfälische Technische Hochschule Aachen},
      type         = {Masterarbeit},
      address      = {Aachen},
      publisher    = {RWTH Aachen University},
      reportid     = {RWTH-2024-08145},
      pages        = {1 Online-Ressource: Illustrationen},
      year         = {2023},
      note         = {Veröffentlicht auf dem Publikationsserver der RWTH Aachen
                      University 2024; Masterarbeit, Rheinisch-Westfälische
                      Technische Hochschule Aachen, 2023},
      abstract     = {With the high penetration of distributed energy resources
                      (DERs) in distribution systems, many challenges arise in
                      grid operation, particularly for voltage control.
                      State-estimation (SE) based voltage control for distribution
                      systems makes use of voltage estimates to calculate how much
                      flexible power would be required to keep the voltages within
                      desired limits. The effectiveness of this method depends on
                      the accuracy of the SE, which is subject to different
                      sources of uncertainty. The installation of additional
                      meters in the grid can help to increase the overall
                      accuracy, but the associated costs of the meters need to be
                      considered before deciding on their installation. To account
                      for economic considerations in the process of improving SE,
                      this thesis elaborates a two-module framework to perform a
                      sensitivity and cost-benefit analysis (CBA) of the SE-based
                      voltage control. First, a Global Sensitivity Analysis (GSA)
                      based meter placement methodology is proposed, which
                      produces a top-down priority list of meters to be installed
                      to help improve the accuracy of the SE, and different
                      ranking metrics are elaborated to reflect Distribution
                      System Operators (DSOs)-specific objectives. Second, as the
                      installation of additional meters should make sense from an
                      economic point of view, the meters coming from the meter
                      placement are subject to a CBA where the cost of installing
                      an additional meter is compared with the savings in flexible
                      power coming from the improvement of the voltage control
                      strategy with the installed meter (in terms of lower power
                      flexibility required to keep the voltage within the allowed
                      boundaries).The proposed framework is applied to study
                      various scenarios with different levels of load, generation,
                      and DER penetration, on a representative 99-node
                      distribution grid. The results show the influence of
                      operating conditions on the estimation uncertainties and
                      highlight the importance of selecting the fittest metric for
                      the DSO target, as the meter placement heavily influences
                      the results of the CBA. It is also shown that significant
                      savings can be achieved with a low number of meters,
                      especially in scenarios with low generation, load, and DER
                      penetration. The developed framework showcases enough
                      flexibility due to its modularity, e.g., the proposed meter
                      placement strategy can be replaced by any other meter
                      placement method without affecting the CBA, specific costs
                      can be included in the CBA module ensuring the replicability
                      of the framework with alternative boundary conditions, and
                      the meter placement strategy alone can be adopted for any
                      other SE-based application in the case economic
                      considerations are not of interest. Moreover, the proposed
                      framework provides DSOs with a new tool to help them in
                      making informed decisions with respect to operational tasks:
                      by linking the meter placement with the voltage control and
                      emphasizing the economic benefits, DSOs can effectively
                      decide if a meter is worth installing based on cost
                      considerations rather than just accounting for uncertainty
                      thresholds.},
      cin          = {616520 / 616310 / 080052},
      ddc          = {621.3},
      cid          = {$I:(DE-82)616520_20160614$ / $I:(DE-82)616310_20140620$ /
                      $I:(DE-82)080052_20160101$},
      typ          = {PUB:(DE-HGF)19},
      doi          = {10.18154/RWTH-2024-08145},
      url          = {https://publications.rwth-aachen.de/record/992313},
}