Penetration impact of wind farms equipped with frequency variations ride through algorithm on power system frequency response

A. B. Attya, T. Hartkopf

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)


Focus of power system engineers is currently directed to the impact of wind power on system frequency. Research efforts concentrate on the ability of wind farms to contribute in the frequency droop events by injecting active power to the grid. This paper presents a detailed analysis for the effect of wind farm connection to a certain power system on the system frequency response. Most of wind farm parameters were considered, namely, the actual wind speeds, wake effects inside the wind farm, the different arrangements of wind turbines inside the wind farm and pitch control mechanism. Moreover, the major data of a h power system were included; different conventional generation technologies and their suitable speed governors. In addition, instant dynamic load variations were implemented. Five case studies were conducted through this system to test the system frequency attitude during normal operation and in case of sudden and large load changes. Three basic values are used to estimate the mentioned impact; the time needed to reach the safe margin after a certain droop, the RMS value of frequency deviation after the fault initiation by a given fixed time span and the maximum frequency drop for each event. All the previously stated studies are performed using MATLAB and Simulink simulations depending on real wind speeds data.
Original languageEnglish
Pages (from-to)94-103
Number of pages10
JournalInternational Journal of Electrical Power and Energy Systems
Issue number1
Early online date30 Mar 2012
Publication statusPublished - Sep 2012


  • frequency droop
  • pitch control
  • power system
  • wind farm
  • wind turbine

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