Islanding Detection in Unbalanced Distribution Systems with Doubly Fed Induction Generator Based Distributed Generation Using Wavelet Transform

Abstract—A passive islanding-detection technique is proposed in this article for a distribution network with a distributed generation system including a doubly fed induction generator. This method is based on the processing of the measured voltage signals of the distributed generation connecting bus using discrete wavelet transform. Different types of disturbances including faults (single-phase, two-phase, and three-phase) and power quality disturbances (capacitor switching, load switching, and motor starting) are used to discriminate from islanding conditions. A wind turbine equipped with a doubly fed induction generator is considered as the distributed generation source in an unbalanced distribution system. The studied system is simulated with high level of detail in PSCAD/EMTDC software for the purpose of this work. The results of implementing the proposed method verify the high accuracy, reliability, and speed of the proposed islanding-detection approach even with small non-detection zone and the presence of high levels of noise in measured voltage signals.

[1]  Kashem M. Muttaqi,et al.  A short length window-based method for islanding detection in distributed generation , 2012, The 2012 International Joint Conference on Neural Networks (IJCNN).

[2]  G. Joós,et al.  A Fuzzy Rule-Based Approach for Islanding Detection in Distributed Generation , 2010, IEEE Transactions on Power Delivery.

[3]  Yongzheng Zhang,et al.  Islanding Detection Assessment of Multi-Inverter Systems With Active Frequency Drifting Methods , 2008, IEEE Transactions on Power Delivery.

[4]  Emilio Figueres,et al.  Review of anti-islanding techniques in distributed generators , 2010 .

[5]  N. W. A. Lidula,et al.  A Pattern-Recognition Approach for Detecting Power Islands Using Transient Signals—Part II: Performance Evaluation , 2012, IEEE Transactions on Power Delivery.

[6]  Shyh-Jier Huang,et al.  Enhancement of islanding-detection of distributed generation systems via wavelet transform-based approaches , 2008 .

[7]  S. J. Huang,et al.  A Detection Algorithm for Islanding-Prevention of Dispersed Consumer-Owned Storage and Generating Units , 2001, IEEE Power Engineering Review.

[8]  Stéphane Mallat,et al.  A Theory for Multiresolution Signal Decomposition: The Wavelet Representation , 1989, IEEE Trans. Pattern Anal. Mach. Intell..

[9]  Athula Rajapakse,et al.  A pattern recognition approach for detecting power islands using transient signals — Part I: Design and implementation , 2011, 2011 IEEE Power and Energy Society General Meeting.

[10]  Mikihiko Matsui,et al.  A review of current anti-islanding methods for photovoltaic power system , 2010 .

[11]  Saeed Jazebi,et al.  A novel application of wavelet based SVM to transient phenomena identification of power transformers , 2011 .

[12]  Chern-Lin Chen,et al.  Automatic phase-shift method for islanding detection of grid-connected photovoltaic inverters , 2002 .

[13]  S. R. Samantaray,et al.  Assessment of ROCPAD Relay for Islanding Detection in Distributed Generation , 2011, IEEE Transactions on Smart Grid.

[14]  A D Rajapakse,et al.  A Pattern Recognition Approach for Detecting Power Islands Using Transient Signals—Part I: Design and Implementation , 2010, IEEE Transactions on Power Delivery.

[15]  Yu Zhang,et al.  An active islanding detection method for grid-connected converters , 2008, 2008 3rd IEEE Conference on Industrial Electronics and Applications.

[16]  J.C.M. Vieira,et al.  Efficient coordination of ROCOF and frequency relays for distributed generation protection by using the application region , 2006, IEEE Transactions on Power Delivery.

[17]  Ajeet Rohatgi,et al.  Analysis and performance assessment of the active frequency drift method of islanding prevention , 1999 .

[18]  A. M. Gole,et al.  Modeling Guidelines for Switching Transients Report Prepared by the Switching Transients Task Force of the IEEE Modeling and Analysis of System Transients Working Group , 1998 .

[19]  H. Kazemi Karegar,et al.  Wavelet transform method for islanding detection of wind turbines , 2012 .

[20]  M. D. Cox,et al.  Discrete wavelet analysis of power system transients , 1996 .

[21]  Ajeet Rohatgi,et al.  Determining the relative effectiveness of islanding detection methods using phase criteria and nondetection zones , 2000 .

[22]  A Yazdani,et al.  Investigation of the Local Passive Anti-Islanding Scheme in a Distribution System Embedding a PMSG-Based Wind Farm , 2011, IEEE Transactions on Power Delivery.

[23]  Shiun Chen,et al.  Wavelet Transform for Processing Power Quality Disturbances , 2007, EURASIP J. Adv. Signal Process..

[24]  Hong-Tzer Yang,et al.  An integrated passive islanding detection method for distributed generators , 2009 .

[25]  Chul-Hwan Kim,et al.  Wavelet transforms in power systems Part 2 Examples of application to actual power system transients , 2001 .

[26]  David Thomas,et al.  New islanding detection method for DFIG wind turbines , 2011, 2011 4th International Conference on Electric Utility Deregulation and Restructuring and Power Technologies (DRPT).

[27]  Shuhui Li,et al.  Control of DFIG Wind Turbine With Direct-Current Vector Control Configuration , 2012, IEEE Transactions on Sustainable Energy.

[28]  David Reigosa,et al.  Active islanding detection using high frequency signal injection , 2012, 2011 IEEE Energy Conversion Congress and Exposition.