Islanding Detection in Photo-Voltaic Systems Based on Instantaneous Power Measurements

Okan Ozgonenel, Serap Karagol


Today, renewable and clean energy sources are being used to generate electric power and to reduce dependency on conventional fossil fuels, which are limited in supply and cause immense pollution. Renewable energy is also a sustainable type of energy. Although it may not be a cost-effective type of energy in the short term, it can contribute to reducing greenhouse gas emissions. Safety operations and measures are of great concern, and the prevention of islanding phenomena plays an important role for areliable energy system. Therefore, anti-islanding protection is a requirement for connecting to the utility grid. Here, we propose a different and fast method for islanding detection in photo-voltaic (PV) systems. The suggested method is based on instantaneous power calculation at the point of common coupling and is able to detect islanding conditions within a few sampling intervals. No further calculations are needed to detect islanding problems for grid-connected PV systems.

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Power differential method; solar power; PV modules; islanding detection.

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S.H. Chowdhury, A.M. Than Oo, “Study on electrical energy and prospective electricity generation from renewable sources in Australia”, Renewable and Sustainable Energy Reviews, vol. 16, no. 9, pp. 6879-6887, 2012.

A. Tascikaraoglu, M. Uzunoglu, B. Vural, O. Erdinc, “Power quality assessment of wind turbines and comparison with conventional legal regulations: A case study in Turkey”, Applied Energy, vol. 88, pp. 1864-1872, 2011.

L. Liu, Z. Wang, “The development and application practice of wind-solar energy hybrid generation systems in China”, Renew Sustain Energy Rev, vol. 13, no. 6-7, pp. 1504-1512, 2009.

T. Bennett, A. Zilouchian, R. Messenger, "Photovoltaic model and converter topology considerations for MPPT purposes", Solar Energy, vol. 86, pp. 2029–2040, 2012.

S. Li, T.A. Haskew, D. Li, F. Hu, "Integrating photovoltaic and power converter characteristics for energy extraction study of solar PV systems", Renew Energ, vol. 36, pp. 3238-3245, 2011.

M.A. Eltawil, Z. Zhao, "Grid-connected photovoltaic power systems: Technical and potential problems – A review", Renewable and Sustainable Energy Reviews, vol. 14, pp. 112-129, 2010.

M. McGranaghan, T. Ortmeyer, D. Crudele, T. Key, J. Smith, P. Barker, “Renewable Systems Interconnection Study: Advanced Grid Planning and Operations”, Sandia Report, February 2008.

B. Ward, R. Michael, Evaluation of islanding detection methods for utility-interactive inverters in photovoltaic systems, Sandia Report, SAND2002-3591, Unlimited Release, Printed November, 2002.

K. Tunlasakun, K. Kirtikara, S. Thepa, V. Monyakul, "A micro controller based islanding detection for grid connected inverter", The 47th IEEE International Midwest Symposium on Circuits and Systems, vol. 3, pp. 267-269, 2004.

M. Yingram, S. Premrudeepreechacharn, "Investigation Over/Under-Voltage Protection of Passive Islanding Detection Method of Distributed Generations in Electrical Distribution Systems", 2012 International Conference on Renewable Energy Research and Applications (ICRERA), pp. 1-5, 2012.

M. Bakhshi, R. Noroozian, G.B. Gharehpetian, "Capability Improvement of Over / Under Frequency Relays by Using a Hybrid Islanding Detection Method for Synchronous Based DG Units", Proceedings of 17th Conference on Electrical Power Distribution Networks (EPDC), pp. 1-8, 2012.

K. Tunlasakun, "PLDs-Based Islanding Detection for Grid Connected Inverter", World Academy of Science, Engineering and Technology, vol. 21, pp. 518-521, 2008.

B. Liu, D. Thomas, K. Jia, M. Woolfson, "Advanced ROCOF protection of synchronous generator", 2011 IEEE PES Innovative Smart Grid Technologies (ISGT), Anaheim, US, 17-19 Jan 2011.

B. Liu, D. Thomas, "ROCOF protection in distributed system with noise and non-linear load", 2011 10th Environment and Electrical Engineering (EEEIC), 8-11 May 2011, Rome, Italy.

B. Liu, D. Thomas, "New islanding detection method for DFIG wind turbines", 2011 4th Electric Utility Deregulation and Restructuring and Power Technologies (DRPT),YanTai, China, 6-9 July 2011.

B. Singam, L.Y. Hui, "Assessing SMS and PJD Schemes of Anti Islanding with Varying Quality Factor", IEEE Power and Energy Conference, PECon '06, 2006.

G.K. Hung, C.C. Chang, C.L. Chen, "Automatic Phase-Shift Method for Islanding Detection of Grid-Connected Photovoltaic Inverters", IEEE T Energy Conver, vol. 18, no. 1, pp. 169-173, 2013.

D. Velasco, C.L. Trujillo, G. Garcera, E. Figueres, "Review of anti-islanding techniques in distributed generators", Renewable and Sustainable Energy Reviews, vol. 14, no. 6, pp. 1608-1614, 2014.

S.I. Jang, K.H. Kim, "A new islanding detection algorithm for distributed generations interconnected with utility networks", 8th IEE International Conference on Developments in Power System Protection, 2004.

H. Kobayashi, K. Takigawa, E. Hashimoto, "Method for preventing islanding phenomenon on utility grid with a number of small scale PV systems", 22nd IEEE Photovoltaic Specialists Conference, 1991.

S.I. Jang, K.H. Kim, "An Islanding Detection Method for Distributed Generations Using Voltage Unbalance and Total Harmonic Distortion of Current", IEEE T Power Deliver, vol. 19, no. 2, pp. 745-752, 2004.

W. Cai, B. Liu, S. Duan, C. Zou, "An Islanding Detection Method Based on Dual-Frequency Harmonic Current Injection Under Grid Impedance Unbalanced Condition", IEEE T Ind Inform, vol. 9, no. 2, pp. 1178-1187, 2013.

B. Liu, D. Thomas, K. Jia, "Impedance estimation and the total harmonic distortion methods for islanding detection", IEEE COMPEL2012 13th Workshop on Control and Modelling for Power Electronics, 2012.

P. Mahat, C. Zhe, B. Bak-Jensen, "Review of islanding detection methods for distributed generation", Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies, 2008.

R.S. Kunte, G. Wenzhong, "Comparison and review of islanding detection techniques for distributed energy resources", 40th North American Power Symposium, NAPS '08 2008.

F. Bertling, S. Soter, "A novel converter integrable impedance measuring method for islanding detection in grids with widespread use of decentral generation", SPEEDAM 2006 International Symposium on Power Electronics, Electrical Drives, Automation and Motion, 2006.

T. Tang, S.J. Xie, "Research on 2nd harmonic Impedance Measurement Based Active Islanding Detection Method", 2012 IEEE 7th International Power Electronics and Motion Control Conference - ECCE Asia, Harbin, China June 2-5, 2012.

K. Zhu, X. Lu, B. Zhang, "A Novel Method of Impedance Measurement Used in Islanding Detection Based on Controllable Short-circuit Technology", Applied Mechanics and Materials, vol. 130, no. 134, pp. 752-756, 2012.

J. Kliber, W. Wang, W. Xu, "Local Anti-Islanding Protection for Distributed Generators Based on Impedance Measurements", IEEE Electric Power Conference, pp. 1-5, 2008.

W. Xu, E.E: Ahmed, X. Zhang, X. Liu, "Measurement of Network Harmonic Impedances: Practical Implementation Issues and Their Solutions", IEEE T Power Deliver, vol. 17, pp. 210-216, 2002.

F. Liu, Y. Kang, Y. Zhang, S. Duan, X. Lin, "Improved SMS islanding detection method for grid-connected converters", IET Renew Power Gen, vol. 4, no. 1, pp. 36-42, 2010.

H.T. Yang, P.C. Peng, T.Y. Tsai, Y.Y. Hong, "An improved Active Islanding Detection Technology for Grid-connected Solar Photovoltaic System", International Conference on Power Systems Transients (IPST2009), 2009.

F. Liu, X. Lin, Y. Kang, Y. Zhang, S. Duan, "An Active Islanding Detection Method for Grid-Connected Converters”, 3rd IEEE Conference on Industrial Electronics and Applications, ICIEA2008, 2008.

S. Narendiran, M. Bansal, S.K. Sahoo, "Islanding Issues of Grid-connected PV Systems", International Journal of Engineering and Technology (IJET), pp. 726-733, 2013.

M.E. Ropp, M. Begovic, A. Rohatgi, "Analysis and performance assessment of the active frequency drift method of islanding prevention, IEEE Transactions on Energy Conversion, vol. 14, no. 3, pp. 810-816, 1999.

P. Sanchis, L. Marroyo, J. Coloma, "Design Methodology for the Frequency Shift Method of Islanding Prevention and Analysis of its Detection Capability", Progress in Photovoltaics: Research and Applications, vol. 13, pp. 409-428, 2005.

F. Yu, Y. Fan, M. Cheng, G. Hu, "Parameter Design Optimization for Sandia Frequency Shift Islanding Detection Method", 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG), 2012.

M. Robitaille, K. Agbossou, M.L. Doumbia, R. Simard, "Islanding Detection Method for a Hybrid Renewable Energy System", International Journal of Renewable Energy Research, vol. 1, no. 1, pp. 41-53, 2011.

A. Timbus, A. Oudalov, C.N.M. Ho, "Islanding detection in smart grids", 2010 IEEE Energy Conversion Congress and Exposition (ECCE), pp. 3631-3637, 2010.

L. Lopes, Y. Zhang, "Islanding Detection Assessment of MultiInverter Systems with Active Frequency Drifting Methods", IEEE T Power Deliver, vol. 23, pp. 480-486, 2008.

L. Lopes, H. Sun, "Performance Assessment of Active Frequency Drifting Islanding Detection Methods", IEEE T Energy Conver, vol. 21, pp. 171-180, 2006.

T. Skocil, O. Gomis-Bellmunt, D. Montesinos-Miracle, S. Galceran-Arellano and J. Rull-Duran, "Passive and active methods of islanding for PV systems," 2009 13th European Conference on Power Electronics and Applications, Barcelona, 2009, pp. 1-10.

W.Y. Teoh, C.W. Tan, "An Overview of Islanding Detection Methods in Photovoltaic Systems", World Academy of Science, Engineering and Technology, vol. 58, pp. 674-682, 2011.

W. Xu, K. Mauch, S. Martel, An Assessment of Distributed Generation Islanding Detection Methods and Issues for Canada, Report CETC-Varennes 2004-074 (TR), CANMET Energy Technology Centre – Varennes, Natural Resources Canada, July 2004.

K. Yabe, "Power differential method for discrimination between fault and magnetizing inrush current in transformers", IEEE T Power Deliver, vol. 12, no. 3, pp. 1109-1118, 1997.

A.D. Rajapakse, D. Muthumuni, "Simulation Tools for Photovoltaic System Grid Integration Studies", Electrical Power & Energy Conference (EPEC), 22-23 Oct 2009.

A. Safari, S. Mekhilef, "Implementation of incremental conductance method with direct control", TENCON 2011, pp. 944-948, 2011.


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