On passivity of bulk power grids: Challenges and new findings

Stability analysis of the bulk power grid with progressively increasing interconnections of new devices is challenging as it repeatedly needs the complete system modeling and assessment. In this context, passivity theory is appealing since it gives a sufficiency condition for stability and individually passive components ensure passivity of their interconnected system. In literature, a significant attention is focused on improving component-level passivity while the grid is represented by Thevenin's equivalent algebraic models that are assumed passive. We have shown that bulk power grid is not necessarily passive, especially in the electromechanial frequency range when a dynamic model is considered. Moreover, the passivity property can alter with changing operating conditions. It is shown that power system stabilizers (PSSs) can ensure passivity in one condition and loose it in another. This highlights the need for considering passivity in control design and ensuring robustness in that process.

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Work Title On passivity of bulk power grids: Challenges and new findings
Access
Open Access
Creators
  1. Sayan Samanta
  2. Nilanjan Ray Chaudhuri
Keyword
  1. Passivity
  2. Stability
  3. Robust passivity
  4. PSS
License In Copyright (Rights Reserved)
Work Type Conference Proceeding
Publisher
  1. 2020 IEEE Power & Energy Society General Meeting (PESGM)
Publication Date December 16, 2020
Publisher Identifier (DOI)
  1. https://doi.org/10.1109/PESGM41954.2020.9281857
Deposited July 04, 2023

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Version 1
published

  • Created
  • Added SubmittedVersion.pdf
  • Added Creator Sayan Samanta
  • Added Creator Nilanjan Ray Chaudhuri
  • Published
  • Updated Keyword, Subtitle, Publisher, and 1 more Show Changes
    Keyword
    • Passivity, Stability, Robust passivity, PSS
    Subtitle
    • Challenges and new findings
    Publisher
    • 2020 IEEE Power & Energy Society General Meeting (PESGM)
    Publication Date
    • 2020-08-02
    • 2020-12-16
  • Updated