Latency viewed as a stochastic process and its impact on wide area power system control signals

Jonathan William Stahlhut, Timothy James Browne, Gerald Thomas Heydt, Vijay Vittal

Research output: Contribution to journalArticle

172 Scopus citations


A method of calculating the communication delay (latency) for measurements and control signals in a power system is shown. The basis of the calculation is a dedicated communication channel for control signals. The time delay calculation is examined using a dynamic equivalent of the Western Electricity Coordinating Council transmission system. The impact on control system response is discussed. The application given is a wide area control system for interarea mode damping. Results demonstrate that control signal latency can degrade the performance of controls in a wide area control system.

Original languageEnglish (US)
Pages (from-to)84-91
Number of pages8
JournalIEEE Transactions on Power Systems
Issue number1
Publication statusPublished - Feb 2008



  • Damping
  • Latency
  • Network delay
  • Power system control
  • Power system stabilizer
  • Queuing
  • Wide area control systems
  • Wide area measurement systems

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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