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A New Islanding Detection Method using Phase-Locked Loop for Inverter-Interfaced Distributed Generators

  • Chung, Il-Yop (Department of Electrical and Computer Engineering, Virginia Polytechnic Institute and State University) ;
  • Moon, Seung-Il (School of Electrical Engineering and Computer Science, Seoul National University)
  • Published : 2007.06.01

Abstract

This paper proposes a new islanding detection method for inverter-interfaced distributed generators (DG). To detect islanding conditions, this paper calculates the phase angle variation of the system voltage by using the phase-locked loop (PLL) in the inverter controllers. Because almost all inverter systems are equipped with the PLL, the implementation of this method is fairly simple and economical for inverter-interfaced DGs. The detection time can also be shortened by reducing communication delay between the relays and the DGs. The proposed method is based on the fact that islanding conditions result in the frequency and voltage variation of the islanded area. The variation depends on the amount of power mismatch. To improve the accuracy of the detection algorithm, this paper injects small low-frequency reactive power mismatch to the output power of DG.

Keywords

References

  1. P.P. Barker and R.W. de Mello, 'Determining the impact of distributed generation on power systems: Part1 –Radial distribution systems', in Proc. 2000 IEEE PES Summer Meeting, vol. 3, pp. 1645-1656
  2. IEEE Standard for Interconnecting Distributed Resources with Electric Power Systems, IEEE Standard 1547-2003, Jul. 2003
  3. IEEE Recommended Practice for Utility Interface of Residential and Intermediate Photovoltaic (PV) Systems, ANSI/IEEE Standard 929-1988, Nov. 1987
  4. C.J. Mozina, 'Interconnection Protection of IPP Generators at Commercial/Industrial Facilities', IEEE Trans. Industry Applications, vol. 37, no. 3, pp. 681-688, May/Jun. 2001 https://doi.org/10.1109/28.924745
  5. M.A. Redferm, O. Usta, and G. Fielding, 'Protection Against Loss of Utility Grid Supply for a Dispersed Storage and Generation Unit', IEEE Trans. Power Delivery, vol. 8, no. 3, Jul. 1993
  6. M.A. Redfern and O. Usta, 'A New Microprocessor Based Islanding Protection Algorithm for Dispersed Storage and Generation Units', IEEE Trans. Power Delivery, vol. 10, no. 3, Jul. 1995
  7. F.S. Pai and S.H. Huang, 'A Detection Algorithm for Islanding-Prevention of Dispersed Consumer-Owned Storage and Generating Units', IEEE Trans. Energy Conversion, vol. 16, no. 4, Dec. 2001
  8. P.D. Hopewell, N. Jenkins, and A.D. 'Cross, Lossof- mains detection for small generators', IEE Proceedings - Electric Power Applications, vol. 143, no. 3, pp. 225-230, May 1996 https://doi.org/10.1049/ip-epa:19960286
  9. P. O'Kane and B. Fox, 'Loss of main detection for embedded generation by system impedance monitoring', in Proc. 1997 Developments in Power System Protection Conf., no. 434, pp. 95-98
  10. S.J. Huang and F.S. Pai, 'A New Approach to Islanding Detection of Dispersed Generators with Self-Commutated Static Power Converters', IEEE Trans. Power Delivery, vol. 15, no. 2, pp. 500-507, Apr. 2000 https://doi.org/10.1109/61.852975
  11. J.B. Jeong, H.J. Kim, S.H. Back, and K.S. Ahn, 'An Improved Method for Anti-Islanding by Reactive Power Control', in Proc. of ICEMS 2005, vol. 2, pp. 965 –970
  12. Z. Ye, A. Kolwalkar, Y. Zhang, P. Du and R. Walling, 'Evaluation of Anti-Islanding Schemes Based on Non Detection Zone Concept', in Proc. 2003 IEEE PES General Meeting, pp. 1735-1741
  13. W. Bower and M. Ropp, 'Evaluation of islanding detection methods for photovoltaic utility-interactive power systems', International Energy Agency, Photovoltaic Power Systems, Tech. Rep. IEA T5-05, Mar. 2002
  14. I.Y. Chung, S.W. Park, H.J. Kim, S.I. Moon, B.M. Han, J.E. Kim, and J.H. Choi, 'Operating Strategy and Control Scheme of Premium Power Supply Interconnected with Electric Power Systems', IEEE Trans. Power Delivery, vol. 20, no. 3, July 2005, pp. 2281-2288 https://doi.org/10.1109/TPWRD.2005.848443
  15. I.Y. Chung, 'Operation Strategies and a New Islanding Detection Method Using PLL for Distributed Generators', Ph.D. dissertation, School of Elec. Eng., Seoul National University, Korea, 2005
  16. H. Akagi, Y. Kanazawa, and A. Nabae, 'Instantaneous Reactive Power Compensators Comprising Switching Devices without Energy Storage Components', IEEE Trans. on Industry Application, vol. 1A-20, no.3, May/June 1984, pp. 625-630
  17. S.J. Lee, J.K. Kang, and S.K. Sul, 'A new phase detecting method for power conversion systems considering distorted conditions in power system', in Proc. 1999 IEEE IAS Annual Meeting, vol. 4, pp. 2167-2172
  18. V. Kaura and V. Blasko, 'Operation of a Phase Locked Loop System Under Distorted Utility Conditions', IEEE Trans. Industry Applications, vol. 33, no. 1, pp. 58-63, Jan/Feb. 1997 https://doi.org/10.1109/28.567077

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