SOCCA: A security-oriented cyber-physical contingency analysis in power infrastructures

Saman Zonouz, Charles M. Davis, Katherine R. Davis, Robin Berthier, Rakesh B. Bobba, William H. Sanders

Research output: Contribution to journalArticlepeer-review


Contingency analysis is a critical activity in the context of the power infrastructure because it provides a guide for resiliency and enables the grid to continue operating even in the case of failure. In this paper, we augment this concept by introducing SOCCA, a cyber-physical security evaluation technique to plan not only for accidental contingencies but also for malicious compromises. SOCCA presents a new unified formalism to model the cyber-physical system including interconnections among cyber and physical components. The cyber-physical contingency ranking technique employed by SOCCA assesses the potential impacts of events. Contingencies are ranked according to their impact as well as attack complexity. The results are valuable in both cyber and physical domains. From a physical perspective, SOCCA scores power system contingencies based on cyber network configuration, whereas from a cyber perspective, control network vulnerabilities are ranked according to the underlying power system topology.

Original languageEnglish (US)
Article number6687271
Pages (from-to)3-13
Number of pages11
JournalIEEE Transactions on Smart Grid
Issue number1
StatePublished - Jan 2014


  • Contingency analysis
  • cyber-physical systems
  • security
  • situational awareness
  • state estimation

ASJC Scopus subject areas

  • Computer Science(all)


Dive into the research topics of 'SOCCA: A security-oriented cyber-physical contingency analysis in power infrastructures'. Together they form a unique fingerprint.

Cite this