This paper proposes a systematic gain setting method for the positive feedback anti-islanding scheme which is designed to protect the interconnected inverter-based distributed generators (DGs) from islanding operation. Two main factors affecting the performance of the anti-islanding scheme are investigated when the positive feedback gain is tuned. One is the stability impact of the anti-islanding control on distributed generation (DG) systems and the other is the islanding detection time of the anti-islanding scheme. The small-signal model and the electromagnetic transient simulation model of an inverter-based DG system are developed to facilitate the realization of the proposed gain setting method. This method provides a practical and reliable tool for DG planning engineers.

Additional Metadata
Keywords Distributed generation, Inverter, Positive feedback, Small signal model
Persistent URL dx.doi.org/10.1109/POWERCON.2010.5666512
Conference 2010 International Conference on Power System Technology: Technological Innovations Making Power Grid Smarter, POWERCON2010
Citation
Wang, X, Zhu, S. (Shouzhen), Yong, J. (Jing), Zheng, J. (Jinghong), & Xu, W. (Wilsun). (2010). A systematic gain setting method of the positive feedback anti-islanding scheme for inverter-based distributed generators. In 2010 International Conference on Power System Technology: Technological Innovations Making Power Grid Smarter, POWERCON2010. doi:10.1109/POWERCON.2010.5666512