On passivity of bulk power grids: Challenges and new findings

Sayan Samanta, Nilanjan Ray Chaudhuri

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish (US)
Title of host publication2020 IEEE Power and Energy Society General Meeting, PESGM 2020
PublisherIEEE Computer Society
ISBN (Electronic)9781728155081
DOIs
StatePublished - Aug 2 2020
Event2020 IEEE Power and Energy Society General Meeting, PESGM 2020 - Montreal, Canada
Duration: Aug 2 2020Aug 6 2020

Publication series

NameIEEE Power and Energy Society General Meeting
Volume2020-August
ISSN (Print)1944-9925
ISSN (Electronic)1944-9933

Conference

Conference2020 IEEE Power and Energy Society General Meeting, PESGM 2020
CountryCanada
CityMontreal
Period8/2/208/6/20

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Nuclear Energy and Engineering
  • Renewable Energy, Sustainability and the Environment
  • Electrical and Electronic Engineering

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