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A predictive approach to control frequency instabilities in a wide area system

Mirzazad Barijough, S ; Sharif University of Technology | 2009

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  1. Type of Document: Article
  2. DOI: 10.1109/PSCE.2009.4840142
  3. Publisher: 2009
  4. Abstract:
  5. Wide-area monitoring and control system complements the classical protection systems and overcomes their drawbacks. In such systems a dynamic view of power system, using synchronized measurements in short time intervals, smaller than 20ms, is available. This new kind of system's information provides a novel preventive control action to prevent system's large disturbances. This paper proposes a new method to prevent frequency instabilities immediately after a disturbance occurs in a system. Based on online measurements sent by phasor measurement units, a single machine equivalent model including the governors' effect is computed. An accurate frequency prediction is done based on this novel model. Then a load shedding approach is presented maintaining the line power flows in a permissible limits and shedding the most effective loads in one step. ©2009 IEEE
  6. Keywords:
  7. Control frequency ; Frequency instabilities ; Frequency prediction ; Large disturbance ; Load-shedding ; On-line measurement ; One step ; Phasor measurement unit ; Power flows ; Power systems ; Preventive control ; Protection systems ; Short time intervals ; Single machine equivalent ; Synchronized measurement ; Wide area monitoring ; Wide area system ; Electric power transmission networks ; Power transmission ; Units of measurement ; Wide area networks
  8. Source: 2009 IEEE/PES Power Systems Conference and Exposition, PSCE 2009, Seattle, WA, 15 March 2009 through 18 March 2009 ; 2009 ; 9781424438112 (ISBN)
  9. URL: https://ieeexplore.ieee.org/document/4840142