Controllability of AC Power Networks with DC Lines

Mohammad Pirani, Joshua A. Taylor

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


We analyze the effect of DC lines on the controllability of AC power networks. We study the spectra of the controllability Gramian as a function of the addition of DC lines. We show that the trace of the controllability Gramian, which represents average controllability, is maximized when DC lines link node pairs with large effective reactance in the AC network.

Original languageEnglish (US)
Article number9280373
Pages (from-to)1649-1651
Number of pages3
JournalIEEE Transactions on Power Systems
Issue number2
StatePublished - Mar 2021
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


  • Direct current
  • controllability Gramian


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