An overview of anti-islanding detection algorithms in photovoltaic systems in case of multiple current-controlled inverters

Grid-connected distributed generation power systems (DGPS) based on inverters require the employed controller to include an islanding detection algorithm in order to determine the grid status and operate properly. In certain cases, such as low-power low-cost current-controlled inverters used in residential photovoltaic (PV) systems, the inverter must be stopped once the islanding condition is detected according to the standard and grid-code limits. Passive, active and monitoring-based algorithms for islanding detection have been analyzed in literature considering one DGPS connected to the local electrical power system (EPS). Only in case of active methods, such as active frequency drift (AFD), the effect of two DGPS in the same local EPS on the islanding capabilities has been analyzed. This paper analyzes the performance of diverse passive and active islanding detection methods (IDM) in multiple inverters connected at the same local EPS interact.

[1]  G. Petrone,et al.  Predictive & Adaptive MPPT Perturb and Observe Method , 2007, IEEE Transactions on Aerospace and Electronic Systems.

[2]  Jung-Min Kwon,et al.  Photovoltaic Power Conditioning System With Line Connection , 2006, IEEE Transactions on Industrial Electronics.

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

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

[5]  Achim Woyte,et al.  Cost effective second generation AC-modules: Development and testing aspects , 2006 .

[6]  M.E. Ropp,et al.  Investigation of two anti-islanding methods in the multi-inverter case , 2008, 2008 IEEE Power and Energy Society General Meeting - Conversion and Delivery of Electrical Energy in the 21st Century.

[7]  M. Liserre,et al.  Stability of grid-connected PV inverters with large grid impedance variation , 2004, 2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551).

[8]  Marco Liserre,et al.  Wavelet-Based Islanding Detection in Grid-Connected PV Systems , 2009, IEEE Transactions on Industrial Electronics.

[9]  Mike Ropp,et al.  Using power line carrier communications to prevent islanding [of PV power systems] , 2000, Conference Record of the Twenty-Eighth IEEE Photovoltaic Specialists Conference - 2000 (Cat. No.00CH37036).

[10]  N.W. Miller,et al.  Distributed generation islanding-implications on power system dynamic performance , 2002, IEEE Power Engineering Society Summer Meeting,.

[11]  G. Joos,et al.  Intelligent-Based Approach to Islanding Detection in Distributed Generation , 2007, IEEE Transactions on Power Delivery.

[12]  Frede Blaabjerg,et al.  Proportionalresonant controllers and filters for gridconnected voltagesource converters , 2006 .

[13]  Frede Blaabjerg,et al.  Proportional-resonant controllers and filters for grid-connected voltage-source converters , 2006 .

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

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

[16]  J. B. Jeong,et al.  Active anti-islanding method for pv system using reactive power control , 2006 .

[17]  Marco Liserre,et al.  An Anti-Islanding Method for Single-Phase Inverters Based on a Grid Voltage Sensorless Control , 2006, IEEE Transactions on Industrial Electronics.

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