Power system stability agents using robust wide area control

Hui Ni, Gerald Thomas Heydt, Lamine Mili

Research output: Contribution to journalArticlepeer-review

250 Scopus citations


Conventional power system stabilizers (PSSs) are major local damping controllers acting through generator excitation systems. There are studies that suggest that remote signals could increase damping beyond that attainable by local signals. In this paper, a supervisory level power system stabilizer (SPSS) using wide area measurements is proposed. The robustness of the proposed controller is capable of compensating for the nonlinear dynamic operation of power systems and uncertain disturbances. The coordination of the robust SPSSs and local PSSs is implemented based on the principles of multiagent system theory. This theory is an active branch of applications in distributed artificial intelligence (DAI). The performance of the robust controller as a power system stability agent is studied using a 29-machine 179-bus power system example.

Original languageEnglish (US)
Pages (from-to)1123-1131
Number of pages9
JournalIEEE Transactions on Power Systems
Issue number4
StatePublished - Nov 2002


  • Multiagent system
  • Power system damping
  • Power system stabilizer
  • Robust control
  • Wide area control

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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