Robust Frequency Control for Varying Inertia Power Systems

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Increased penetration of fluctuating Renewable Energy Sources (RES) adds a significant uncertainty in the dynamic behavior of the power system. Varying power infeed from RES significantly affects the number of conventional generators to be dispatched at any time instant. As a result, system parameters, such as inertia and damping can no longer be considered constants, but instead they obtain a time-varying profile. In this paper, a robust frequency control scheme is introduced to account for the time-varying system inertia and damping under increased RES penetration. The proposed method is based on an H∞ loop-shaping design procedure, and it guarantees good frequency response for varying levels of inertia and damping. After presenting the impact of varying system parameters to the system dynamic behavior, the design method for the proposed controller is presented, and its performance is demonstrated in case studies.
Original languageEnglish
Title of host publicationProceedings of 2018 IEEE PES Innovative Smart Grid Technologies Conference Europe
Number of pages6
Publication date2018
ISBN (Print)9781538645055
Publication statusPublished - 2018
Event8th IEEE PES Innovative Smart Grid Technologies Conference - Sarajevo, Bosnia and Herzegovina
Duration: 21 Oct 201825 Oct 2018


Conference8th IEEE PES Innovative Smart Grid Technologies Conference
Country/TerritoryBosnia and Herzegovina


  • Generators
  • Damping
  • Power system dynamics
  • Power system stability
  • Torque
  • Frequency control
  • Rotors


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