A Novel Hybrid Islanding Detection Method for Inverter-Based DGs Using SFS and ROCOF

This paper is aimed at proposing a new hybrid method for the islanding detection of distributed-generation (DG) units. Hybrid method operation is based on the combination of an active and a passive method, for which the optimized Sandia frequency shift (SFS) method is used as the selected active method, and rate of change of frequency relay (ROCOF) is used as the passive method. In order to demonstrate the effectiveness of the proposed technique on islanding detection, several simulation studies based on IEEE 1547 and UL1741 anti-islanding test requirements are carried out. The evaluation of simulation results reveals that the control system, based on the proposed hybrid algorithm, meets the DG islanding protection requirements efficiently. Moreover, it will be demonstrated that the proposed hybrid method is capable of accurately operating under multiple DG units, load switching in the grid-connected mode, as well as different load quality factor conditions.

[1]  Sung-Il Jang,et al.  An islanding detection method for distributed generations using voltage unbalance and total harmonic distortion of current , 2004, IEEE Transactions on Power Delivery.

[2]  Zhe Chen,et al.  A hybrid islanding detection technique using average rate of voltage change and real power shift , 2009, 2009 IEEE Power & Energy Society General Meeting.

[3]  J.L. Kirtley,et al.  Performance of the OVP/UVP and OFP/UFP Method With Voltage and Frequency Dependent Loads , 2009, IEEE Transactions on Power Delivery.

[4]  J.L. Kirtley,et al.  A Simple Technique for Islanding Detection With Negligible Nondetection Zone , 2009, IEEE Transactions on Power Delivery.

[5]  B. Singam,et al.  Assessing SMS and PJD Schemes of Anti-Islanding with Varying Quality Factor , 2006, 2006 IEEE International Power and Energy Conference.

[6]  M. Ropp,et al.  New results for power line carrier-based islanding detection and an updated strengths and weaknesses discussion , 2011, 2011 37th IEEE Photovoltaic Specialists Conference.

[7]  Wilsun Xu,et al.  Dynamic Non-Detection Zones of Positive Feedback Anti-Islanding Methods for Inverter-Based Distributed Generators , 2011, IEEE Transactions on Power Delivery.

[8]  Magdy M. A. Salama,et al.  Impact of Load Frequency Dependence on the NDZ and Performance of the SFS Islanding Detection Method , 2011, IEEE Transactions on Industrial Electronics.

[9]  N H Kan'an,et al.  Effect of dg location on multi-parameter passive islanding detection methods , 2010, IEEE PES General Meeting.

[10]  Walmir Freitas,et al.  Formulas for predicting the dynamic performance of ROCOF relays for embedded generation applications , 2006 .

[11]  Wilsun Xu,et al.  Impact of DG Interface Controls on the Sandia Frequency Shift Antiislanding Method , 2007, IEEE Transactions on Energy Conversion.

[12]  Wen-Yeau Chang,et al.  A hybrid islanding detection method for distributed synchronous generators , 2010, The 2010 International Power Electronics Conference - ECCE ASIA -.

[13]  Ehab F. El-Saadany,et al.  Impact of DG interface control on islanding detection and nondetection zones , 2006 .

[14]  A. Jalilvand,et al.  Hybrid SFS and Q-f Islanding Detection Method for inverter-based DG , 2010, 2010 IEEE International Conference on Power and Energy.

[15]  M.H. Nehrir,et al.  A Hybrid Islanding Detection Technique Using Voltage Unbalance and Frequency Set Point , 2007, IEEE Transactions on Power Systems.

[16]  Miles A Redfern,et al.  Protection against loss of utility grid supply for a dispersed storage and generation unit , 1993 .

[17]  Wilsun Xu,et al.  Comparative analysis between ROCOF and vector surge relays for distributed generation applications , 2005, IEEE Transactions on Power Delivery.

[18]  Caro Lucas,et al.  Imperialist competitive algorithm: An algorithm for optimization inspired by imperialistic competition , 2007, 2007 IEEE Congress on Evolutionary Computation.

[19]  L.A.C. Lopes,et al.  Performance assessment of active frequency drifting islanding detection methods , 2006, IEEE Transactions on Energy Conversion.

[20]  J. R. McDonald,et al.  Performance analysis of the ROCOF and vector shift methods using a dynamic protection modeling approach , 2006 .

[21]  Xiaoyu Wang,et al.  Impact of Positive-Feedback Anti-Islanding Methods on Small-Signal Stability of Inverter-Based Distributed Generation , 2008, IEEE Transactions on Energy Conversion.

[22]  H.H. Zeineldin,et al.  A $Q$– $f$ Droop Curve for Facilitating Islanding Detection of Inverter-Based Distributed Generation , 2009, IEEE Transactions on Power Electronics.

[23]  Wenzhong Gao,et al.  Comparison and review of islanding detection techniques for distributed energy resources , 2008, 2008 40th North American Power Symposium.

[24]  Hatem H. Zeineldin,et al.  Sandia frequency shift parameter selection for multi-inverter systems to eliminate non-detection zone , 2011 .

[25]  S. Kennedy,et al.  Instability criterion to eliminate the Non-Detection Zone of the Sandia Frequency Shift method , 2009, 2009 IEEE/PES Power Systems Conference and Exposition.

[26]  A. H. K. Alaboudy,et al.  Islanding Detection for Inverter-Based DG Coupled With Frequency-Dependent Static Loads , 2011, IEEE Transactions on Power Delivery.

[27]  W. Bower,et al.  Evaluation of Islanding Detection Methods for Utility-Interactive Inverters in Photovoltaic Systems , 2002 .

[28]  Saad Mekhilef,et al.  Robust hybrid anti-islanding method for inverter-based distributed generation , 2010, TENCON 2010 - 2010 IEEE Region 10 Conference.