The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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A Protection Algorithm Discriminating Between Internal and External Faults for Wind Farms

풍력발전단지 보호를 위한 내외부 고장 판별 알고리즘

  • Published : 2007.05.01
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Abstract

A wind farm consists of many wind generator(WG)s therefore, it is generally a complex power system. A wind farm as a distributed generation(DG) affects utility power system. If a conventional protection schemes are applied, it is difficult to detect faults correctly and the schemes can't provide proper coordination in some cases. This paper presents a protection algorithm for a wind farm which consists of a looped collection circuit. Because the proposed algorithm can distinguish between an internal fault and an external fault in a wind farm, The proposed algorithm can disconnect the faulted section in a wind farm. This algorithm is based on an overcurrent protection technique with the change of the ratio of the output current of a generator to the current of the looped line connected to each generator to collect the each generator's power. In addition, operating time of the algorithm is shortened by using the voltage drop at a generator collection point. The performance of the proposed algorithm was verified under various fault conditions using PSCAD/EMTDC simulations.

Keywords

References

  1. Jenkins, N., 'Embedded generation', Power Engineering Journal .Vol. 9, Issue 3, pp.145 - 150, June 1995 https://doi.org/10.1049/pe:19950309
  2. Baghzouz, Y., 'Some General Rules for Distributed Generation - Feeder Interaction' Power Engineering Society General Meeting, 2006. IEEE, pp.1-4. June 2006 https://doi.org/10.1109/PES.2006.1709238
  3. Brahma, S.M.; Girgis, A.A. 'Development of adaptive protection scheme for distribution systems with high penetration of distributed generation', IEEE Transactions on Power Delivery, Vol.19, Issue 1. pp.56 - 63, Jan. 2004 https://doi.org/10.1109/TPWRD.2003.820204
  4. Salman K. Salman, Ibrahim M. Rida, 'Investigating the Impact of Embedded Generation on Relay Setting of Utilities Electrical Feeders', IEEE Transactions on Power Delivery, Vol. 16, No. 2, 246-251, April 2001 https://doi.org/10.1109/61.915490
  5. Jang, S. I., Choi, J. H., Kim, J. W., Choi, D. M, 'An adaptive relaying for the protection of a wind farm interconnected with distribution networks', Transmission and Distribution Conference and Exposition, Volume, pp. 296-302, Sept. 2003 https://doi.org/10.1109/TDC.2003.1335238
  6. Haslam, S.J., Crossley, P.A., Jenkins, N, 'Design and field testing of a source based protection relay for wind farms', IEEE Transactions on Power Delivery, Volume 14, Issue 3, pp.818-823, July 1999 https://doi.org/10.1109/61.772320
  7. Buchholz, B.M., Styczynski, Z.A., Winter, W., 'Dynamic Simulation of Renewable Energy Sources and Requirements on Fault Ride Through Behavior', Power Engineering Society General Meeting 2006 IEEE, pp.1 - 7, June 2006 https://doi.org/10.1109/PES.2006.1709307
  8. 한국전력공사 배전처, '분산형 전원 배전계통 연계 기술기준', 2005