Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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Reserve distribution to maximize the kinetic energy of a wind power plant

풍력단지의 최대 운동에너지 보유를 위한 예비력 분배

  • Yoon, Gihwan (Department of Electrical Engineering, Chonbuk National University) ;
  • Lee, Jinsik (Department of Electrical Engineering, Chonbuk National University) ;
  • Lee, Hyewon (Department of Electrical Engineering, Chonbuk National University) ;
  • Kang, Yong Cheol (Department of Electrical Engineering, Chonbuk National University)
  • Published : 2015.07.15
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Abstract

High wind penetration might cause the frequency stability problem because a wind power plant (WPP) is operating in a maximum power tracking mode to extract the maximal energy from wind and thus does not react to the system frequency variation. Therefore, the system operators encourage a WPP to participate in frequency control, which includes inertia/orl and primary control. The frequency support capability of a WPP depends on the amount of kinetic energy (KE) and reserve. This paper formulates an optimization problem to maximize KE while retaining the required reserve. The proposed optimization problem would allow wind generators (WGs) with a smaller wind speed to retaine more KE. The performance of the proposed optimization problem was investigated in a 100-MW WPP consisting of 20 units of 5-MW permanent magnet synchronous generators using an EMTP-RV simulator. The results show that the proposed optimization problem successfully improves the frequency nadir more than a conventional reserve allocation that distributes WGs proportional to the current output.

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