자여자 풍력 유도발전기의 캐패시터에 따른 고조파 전류의 증폭

Amplification of Current Harmonics Due to Self-Excitation Capacitors for Wind Induction Generators

  • 오용 (동신대학교 전기전자공학과) ;
  • 최용성 (동신대학교 전기공학과) ;
  • 황종선 (전남도립대학 컴퓨터응용전기과) ;
  • 이경섭 (동신대학교 전기공학과)
  • 발행 : 2008.06.01

초록

The value of this paper is to use reduced size apparatuses to perform field measurement in order to identify and validate that the harmonic-current effects are due to the presence of self-excitation capacitance connected at stator's terminals of the studied SEIG. This paper has presented the measured electrical quantities of a three-phase $\Delta$-connected wind induction generator (WIG) under sudden connection and disconnection of resistive loads. An intelligent power-system recorder/monitor has been employed to measure three-phase voltages and currents of the studied system at the terminals of the studied WIG and the load. The measured electrical quantities have been analyzed. Total harmonic distortion (THD) of current using cumulative probability density function has been employed to determine the penetration of harmonic distortion at load side. The results show that the harmonic currents generated by the studied WIG can be severely amplified by the connected self-excited capacitance at the stator's terminals.

키워드

참고문헌

  1. E. D. Basset and F. M. Potter, "Capacitive excitation of induction generators", Trans. American Institute Electrical Engineering, Vol. 54, pp.540-545, 1935 https://doi.org/10.1109/T-AIEE.1935.5057024
  2. T. Thiringer, "Power quality measurements performed on a low-voltage grid equipped with two wind turbines", IEEE Trans. Energy Conversion, Vol. 11, no. 3, September, pp.601-606, 1996 https://doi.org/10.1109/60.537031
  3. M. G. Ioannides, "A new approach for the prediction and identification of generated harmonics by induction generators in transient state", IEEE /PES 1994 Summer Meeting, Paper 94 SM 360-8 EC, San Francisco, CA, 1994
  4. S. S. Yegna Narayanan, B. K. Murthy, and G. S. Rao, "Dynamic analysis of a grid-connected induction generator driven by a wave-energy turbine through hunting networks", IEEE Trans. Energy Conversion, Vol. 14, no. 1, pp.115-121, 1999 https://doi.org/10.1109/60.749156
  5. W. E. Feero and W. B. Gish, "Overvoltages caused by DSG operation: Synchronous and induction generators", IEEE Trans. Power Delivery, Vol. 1, no. 1, pp.258-264, 1986 https://doi.org/10.1109/TPWRD.1986.4307917
  6. W. B. Gish, W. E. Feero, and S. Greuel, "Ferroresonance and loading relationships for DSG installations", IEEE Trans. Power Delivery, Vol. 2, no. 3, pp.953-959, 1987 https://doi.org/10.1109/TPWRD.1987.4308201
  7. A. H. Ghorashi, S. S. Murthy, B. P. Singh, and B. Singh, "Analysis of wind driven grid connected induction generators under unbalanced grid conditions", IEEE Trans. Energy Conversion, Vol. 9, no. 2, pp.217-223, 1994 https://doi.org/10.1109/60.300156
  8. S. D. Rubira and M. D. McCulloch, "Control method comparison of doubly fed wind generators connected to the grid by asymmetric transmission lines", IEEE Trans. Industry Applications, Vol. 36, no. 4, pp.986-991, 2000 https://doi.org/10.1109/28.855951
  9. O. J. M. Smith, "Three-phase induction generator for single-phase line", IEEE Trans. Energy Conversion, Vol. 2, no. 3, pp.382- 387, 1987 https://doi.org/10.1109/TEC.1987.4765863
  10. A. Larsson, "Flicker emission of wind turbines during continuous operation", IEEE Trans. Energy Conversion, Vol. 17, no. 1, pp.114-118, 2002 https://doi.org/10.1109/60.986447
  11. A. Larsson, "Flicker emission of wind turbines caused by switching operations", IEEE Trans. Energy Conversion, Vol. 17, no. 1, pp.119-123, 2002 https://doi.org/10.1109/60.986448
  12. G. Saccomando, J. Svensson, and A. Sannino, "Improving voltage disturbance rejection for variable-speed wind turbines", IEEE Trans. Energy Conversion, Vol. 17, no. 3, pp.422-428, 2002 https://doi.org/10.1109/TEC.2002.801989