Wide-area control resiliency using redundant communication paths

Song Zhang, Vijay Vittal

Research output: Contribution to journalArticlepeer-review

60 Scopus citations


With significant investment made in the U.S. in deploying synchrophasor measurement technology, more wide-area measurements will be available and controls based on these signals are likely to be adopted. Communication systems play a critical role in interactive grid control as an indispensable medium to transmit wide-area measurements; however, they are vulnerable to disruptions leading to the risk of destabilizing power systems. This work addresses a critical issue related to engineering resilient cyber-physical systems. The proposed framework utilizes a hierarchical set of wide-area measurements for control and employs channel switching based on mathematical morphology identification to counteract the impact of communication failures on control effectiveness. The proposed control framework incorporating a set of synchronized wide-area measurements is designed to consist of multiple single-input single-output supplementary damping controllers associated with a static VAr compensator. This work is particularly important with regard to leveraging the large investment in installing phasor measurement units across the nation.

Original languageEnglish (US)
Article number6728664
Pages (from-to)2189-2199
Number of pages11
JournalIEEE Transactions on Power Systems
Issue number5
StatePublished - Sep 2014


  • Channel inspection
  • communication failure
  • control switching
  • cyber-physical systems
  • mathematical morphology
  • resilient control
  • supplementary damping
  • synchronized measurements

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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