Active islanding detection method for inverter-based distribution generation power system

Abstract A novel islanding detection method for an inverter-based distribution generation power system is proposed in this paper. The inverter-based distribution generation power system includes a dc power source and a grid-connected DC/AC inverter. The grid-connected DC/AC inverter acts as a virtual capacitor as the frequency is slightly lower than the fundamental frequency of utility voltage. Since only the inverter-based distribution generation power system supplies power to the load as the utility power interruption occurs, the virtual capacitor operation of the inverter-based distribution generation power system will result in the change of load voltage in amplitude or frequency. Hence, the proposed method can immediately detect the islanding operation.

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

[2]  M. Ropp,et al.  Discussion of a Power Line Carrier Communications-Based Anti-Islanding Scheme using a Commercial Automatic Meter Reading System , 2006, 2006 IEEE 4th World Conference on Photovoltaic Energy Conference.

[3]  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).

[4]  Fang Zheng Peng,et al.  Control for Grid-Connected and Intentional Islanding Operations of Distributed Power Generation , 2011, IEEE Transactions on Industrial Electronics.

[5]  Walmir Freitas,et al.  Performance of ROCOF relays for embedded generation applications , 2005 .

[6]  R Iravani,et al.  Nondetection Zone Assessment of an Active Islanding Detection Method and its Experimental Evaluation , 2011, IEEE Transactions on Power Delivery.

[7]  S. P. Chowdhury,et al.  UK scenario of islanded operation of active distribution networks with renewable distributed generators , 2011 .

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

[9]  Shyh-Jier Huang,et al.  Design and operation of grid-connected photovoltaic system with power-factor control and active islanding detection , 2001 .

[10]  C. J. Mozina,et al.  Interconnection protection of IPP generators at commercial/industrial facilities , 2000, Conference Record of the 2000 IEEE Industry Applications Conference. Thirty-Fifth IAS Annual Meeting and World Conference on Industrial Applications of Electrical Energy (Cat. No.00CH37129).

[11]  M. Liserre,et al.  Overview of Anti-Islanding Algorithms for PV Systems. Part I: Passive Methods , 2006, 2006 12th International Power Electronics and Motion Control Conference.

[12]  K. Takigawa,et al.  Statistical evaluation of optimum islanding preventing method for utility interactive small scale dispersed PV systems , 1994, Proceedings of 1994 IEEE 1st World Conference on Photovoltaic Energy Conversion - WCPEC (A Joint Conference of PVSC, PVSEC and PSEC).

[13]  Bin Wu,et al.  Active Islanding Detection for Inverter-Based Distributed Generation Systems With Power Control Interface , 2011, IEEE Transactions on Energy Conversion.