Transient State Analysis of Network Connected to Wind Generation System

풍력발전시스템이 연계된 계통의 과도상태해석

  • Kim, Se-Ho (Faculty of Electrical & Electronic Engineering, Cheju National University)
  • 김세호 (제주대학교 전기전자공학부)
  • Published : 2003.09.30

Abstract

Generator for wind power can be either synchronous or asynchronous (induction) types. Induction and synchronous generators behave in a different way when subjected to severe faults. Induction generators does not have an angle stability limit and short circuit in the neighborhood of an Induction generator causes the demagnetization of the machine when the fault is cleared, the voltage raises slowly, while the grid contributes with reactive power to the generator and the magnetic flux recovers. On the other hand in the synchronous generators the recovery of the voltage is immediate, since the excitation of the rotor angle comes from an independent circuit. This paper shows the result of the transient state analysis in the network connected to wind generation system Several case studies have been conducted to determine the effect of the clearing time of a fault on the network stability. It has been found that the critical clearing time can be as low as 61ms in the case of induction generator compared to 370ms in the case of synchronous generator.

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References

  1. 허종철, 제주도내 풍력자원 조사에 관한 연구용역, 2001
  2. 김용현, 김일환, 전력전자학회 논문지, Vol. 5, No, 5, pp. 451-458, 2000
  3. Salman K. Salman, Ibrahim M. Rida, Investigating of embedded generation on relay settings of utilities' electrical feeders IEEE Trans. Power Delivery, Vol. 16, No 2, pp. 246-251, 2001 https://doi.org/10.1109/61.915490
  4. Pablo Ledesma, Julio Usaola, Minimum voltage protections on fixed speed wind farms, Proceeding of the European Wind Energy Conference, Denmark, pp. 1075-1077, 2001
  5. C.D. Vournas, G. A. Manos, etc, Voltage security assessment of greek interconnected power system with large wind penetration, Proceeding of the European Wind Energy Conference, Denmark, pp. 1154-1157, 2001
  6. Marcus Helmer, Protection and influence of wind farms from wind turbines and grid point of view, Proceeding of the European Wind Energy Conference, Denmark, pp. 1162-1165, 2001
  7. SKM Systems Analysis, Power tools for windows reference manual, 1996
  8. Vestas, Electrical operating and maintenance manual 2000