A Passive Islanding Detection Method for Grid-Connected Renewable Generation System

Abstract:

This study proposes an islanding detection method for use of grid-connected inverter of renewable generation system. The proposed method is based on an index: the change of power factor (COPF). When an inverter is grid-connected, the COPF is lower than the threshold values. In contrast, as an islanding occurs, the COPF becomes much higher than the threshold value. Detection systems monitor the terminal voltage and load current at the grid-connected point to calculate COPF, and issue an operating signal when the value of COPF exceeds a given threshold. In this study, experiments are conducted to illustrate the principles of the proposed technique for a prototype grid-connected inverter. The test results show that the proposed method is reliable, economical, and easy to implement for islanding detection of grid-connected inverter.

• Periodical: Applied Mechanics and Materials (Volumes 284-287)
• Pages: 1182-1186
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.284-287.1182
• Online since: January 2013
• Authors: Wen Yeau Chang
• Keywords: Change of Power Factor, Grid-Connected Inverter, Islanding Detection, Renewable Generation System

References

[1] W.Y. Chang, in: A Hybrid Islanding Detection Method for Distributed Synchronous Generators, Proceedings of the International Power Electronics Conference, (2010) June 21-24, Sapporo, Japan, p.1326.

DOI: 10.1109/ipec.2010.5544559

[2] IEEE Std 1547, Standard for interconnecting distributed resources with electric power systems, (2003).

[3] W.Y. Chang and H.T. Yang: WSEAS Trans. Systems Vol. 8 (2009), p.1207.

[4] W. Freitas, Z. Huang and W. Xu: IEEE Trans. Power Delivery Vol. 20 (2005), p.57.

[5] S. I. Jang and K. H. Kim: IEEE Trans. Power Delivery Vol. 19 (2004), p.745.

[6] M. A. Redfern, O. Usta, and G. Fielding: IEEE Trans. Power Delivery Vol. 8 (1993), p.948.

[7] F. S. Pai and S. J. Huang: IEEE Trans. Energy Conversion Vol. 16 (2001), p.346.

[8] P. D. Hopewell, N. Jenkins and A. D. Cross: IEE Proceedings-Electrical Power Application Vol. 143 (1996), p.225.

[9] W.Y. Chang: WSEAS Trans. Systems Vol. 7 (2008), p.1329.

[10] M. E. Ropp, M. Begovic and A. Rohatgi: IEEE Trans. Energy Conversion Vol. 14 (1999), p.810.

[11] G. A. Smith, P. A. Onions and D. G. Infield: IEE Proceedings–Electrical Power Application Vol. 147 (2000), p.1.

[12] G.K. Hung, C.C. Chang and C.L. Chen: IEEE Trans. Energy Conversion Vol. 18 (2003), p.169.