Grid loss protection in an utility interactive single phase micro string solar inverter

  • Jeykishan Kumar K


This paper talks about anti-islanding protection function in a 1.5 kVA solar based micro string inverter with considering only the solar input side connected at input and utility connected at output side. As per the Indian standard 16169 which was released in 2014 and equivalent to IEC 62116 standard which was released in the year 2008, any power conditioning unit connected to utility must disconnect from utility within 2s after it goes off-line. The three different voltage levels and total of 47 conditions were tested for various real and reactive power maintaining quality factor 1 at utility side through a 200 kW RLC load and the disconnection time of inverter were obtained through a high definition oscilloscope. For the inverter tested for anti-islanding protection function, it was found that in all scenarios the inverters disconnected well within two seconds as per the limit imposed by IS 16169:2014/ IEC 62116:2008.

Keywords: inverter, anti-islanding, grid tied, disconnection time, volt-var, volt-watt , IS 16169, IEC 62116


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[1] A. Nelson, G. Martin, J. Hurtt, "Experimental evaluation of grid support enabled PV inverter response to abnormal grid conditions", 2017 IEEE Power & Energy Society Innovative Smart Grid Technologies Conference (ISGT), pp. 1-5, 2017.
[2] Groppi F. “Testing of anti-islanding protections for grid-connected inverters”, International Conference on Clean Electrical Power. Piacenza, Italy: IEEE Industrial Electronics Society (IES), 2007 : 183-187.
[3] Ye, Z., Walling, R., Garces, L., Zhou, R., Li, L., and Wang, T.. Study and Development of Anti-Islanding Control for Grid-Connected Inverters. United States: N. p., 2004. Web. doi:10.2172/15007704.
[4] Test Procedure of Islanding Prevention Measures for Utility-Interconnected Photovoltaic Inverters, IS 16169:2014, 2014
[5] R. A. Walling and N. W. Miller, “Distributed generation islanding implications on power system dynamic performance,” in IEEE Power Engineering Society Summer Meeting,, vol. 1, pp. 92–96 vol.1, Jul. 2002.
[6] IEEE Standard Conformance Test Procedures for Equipment Interconnecting Distributed Resources with Electric Power Systems, Std. IEEE 1547.1, Jul. 2005.
[7] Inverters, Converters, Controllers and Interconnection System Equipment for Use With Distributed Energy Resources, Std. UL1741, 2010.
[8] M. E. AlSharidah, W. G. Dunford, and W. Feng, “A new representation of the unintentional islanding test resonant function,” in INTELEC 2009 - 31st International Telecommunications Energy Conference, 10.1109/INTLEC.2009.5351782, pp. 1–6, Oct. 2009.
[9] T. Caldognetto, L. D. Santa, P. Magnone, and P. Mattavelli, “Power electronics based active load for unintentional islanding testbenches,” IEEE Transactions on Industry Applications, vol. 53, no. 4, pp. 3831–3839,Jul.2017.
[10] Li, Z., Zhao, R., Xin, Z., Guerrero, J. M., Savaghebi, M., & Li, P. (2016). Inrush Transient Current analysis and suppression of photovoltaic grid-connected inverters during voltage sag. 2016 IEEE Applied Power Electronics Conference and Exposition (APEC).
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How to Cite
K, J. K. (2020). Grid loss protection in an utility interactive single phase micro string solar inverter. Asian Journal For Convergence In Technology (AJCT) ISSN -2350-1146, 6(3), 48-54.