On the impact of communication delays on power system automatic generation control performance

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper, we investigate the impact of communication delays on the performance of power system automatic generation control (AGC). To this end, we formulate a hybrid system model that describes the power system electromechanical behavior, including the AGC system dynamics. Through linearization and discretization, this hybrid system model is converted into a discrete-time linear time-invariant system model that includes the effect of delays in the AGC system communication channels. The stability of the closed-loop system can then be determined by examining the characteristics of the state-transition matrix of the aforementioned discrete-time linear system. Interesting findings include that increasing communication delay may help decrease the largest eigenvalue magnitude of the state-transition matrix. However, in reality, the delay is not constant or deterministic. We carefully analyze the stability of systems with random communication delays and nonzero mean random disturbances. The proposed analysis methodology is illustrated and verified through numerical examples.

Original languageEnglish (US)
Title of host publication2014 North American Power Symposium, NAPS 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479959044
DOIs
StatePublished - Nov 21 2014
Event2014 North American Power Symposium, NAPS 2014 - Pullman, United States
Duration: Sep 7 2014Sep 9 2014

Publication series

Name2014 North American Power Symposium, NAPS 2014

Other

Other2014 North American Power Symposium, NAPS 2014
CountryUnited States
CityPullman
Period9/7/149/9/14

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ASJC Scopus subject areas

  • Fuel Technology
  • Energy Engineering and Power Technology

Cite this

Zhang, J., & Dominguez-Garcia, A. D. (2014). On the impact of communication delays on power system automatic generation control performance. In 2014 North American Power Symposium, NAPS 2014 [6965370] (2014 North American Power Symposium, NAPS 2014). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/NAPS.2014.6965370