Output Impedance Diffusion Into Lossy Power Lines

Pooya Monshizadeh*, Nima Monshizadeh, Claudio De Persis, Arjan van der Schaft

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

5 Citations (Scopus)
60 Downloads (Pure)

Abstract

Output impedances are inherent elements of power sources in the electrical grids. In this paper, we give an answer to the following question: What is the effect of output impedances on the inductivity of the power network? To address this question, we propose a measure to evaluate the inductivity of a power grid, and we compute this measure for various types of output impedances. Following this computation, it turns out that network inductivity highly depends on the algebraic connectivity of the network. By exploiting the derived expressions of the proposed measure, one can tune the output impedances in order to enforce a desired level of inductivity on the power system. Furthermore, the results show that the more "connected" the network is, the more the output impedances diffuse into the network. Finally, using Kron reduction, we provide examples that demonstrate the utility and validity of the method.

Original languageEnglish
Pages (from-to)1659-1668
Number of pages10
JournalIEEE Transactions on Power Systems
Volume34
Issue number3
DOIs
Publication statusPublished - May-2019

Keywords

  • Microgrid
  • power network
  • output impedance
  • graph theory
  • Laplacian matrix
  • Kron reduction
  • DROOP CONTROL METHOD
  • CONTROL STRATEGY
  • KRON REDUCTION
  • VOLTAGE
  • INVERTERS
  • MICROGRIDS
  • STABILITY
  • DESIGN

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