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Analysis of the turbine standstill for a grid connected wind farm (case study)

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  • Abderrazzaq, M.A.
  • Hahn, B.

Abstract

In the present paper, several types of collected data were employed to analyse the causes of turbines shutdown in a grid-connected wind farm. Although the average availability of the considered wind farm exceeds 96%, the individual availability of some turbines does not exceed 92%. In this context, the present paper introduces a novel approach of understanding the turbine standstill and availability calculation. This approach is based on a variation of monthly energy production to weight the shutdown time including the maintenance and fault hours. The calm hours in summer are 60% less than the average calm time for the considered wind farm. The distribution of inoperative hours reveals a 300% difference between the original and weighed times of downtime. On the other hand, weighed times are used to assess the impact of various faults causing turbines shutdown. The frequency distribution of the faults has shown that 42% of turbine shutdowns are caused by network disturbances, 70% of them are attributed to grid disconnections. Finally, the time distribution of the network faults is investigated to illustrate their impact on the turbine standstill.

Suggested Citation

  • Abderrazzaq, M.A. & Hahn, B., 2006. "Analysis of the turbine standstill for a grid connected wind farm (case study)," Renewable Energy, Elsevier, vol. 31(1), pages 89-104.
    • Handle: RePEc:eee:renene:v:31:y:2006:i:1:p:89-104
    DOI: 10.1016/j.renene.2005.02.011
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    Cited by:

    1. Mabel, M. Carolin & Raj, R. Edwin & Fernandez, E., 2011. "Analysis on reliability aspects of wind power," Renewable and Sustainable Energy Reviews, Elsevier, vol. 15(2), pages 1210-1216, February.
    2. Conroy, Niamh & Deane, J.P. & Ó Gallachóir, Brian P., 2011. "Wind turbine availability: Should it be time or energy based? – A case study in Ireland," Renewable Energy, Elsevier, vol. 36(11), pages 2967-2971.
    3. Guo, Haitao & Watson, Simon & Tavner, Peter & Xiang, Jiangping, 2009. "Reliability analysis for wind turbines with incomplete failure data collected from after the date of initial installation," Reliability Engineering and System Safety, Elsevier, vol. 94(6), pages 1057-1063.

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