| Titre : | Impact of positive-feedback anti-islanding methods on small-signal stability of inverter-based distributed generation (2008) |
| Auteurs : | Xiaoyu, Wang, Auteur ; Freitas, W., Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | IEEE transactions on energy conversion (Vol. 23 n°3, Septembre 2008) |
| Article en page(s) : | pp. 923 - 931 |
| Note générale : | Energy conversion |
| Langues : | Anglais |
| Tags : | Distributed power generation ; feedback ; invertors ; grids ; system stability |
| Résumé : | This paper investigates the impact of positive-feedback anti-islanding methods on the small-signal stability of grid-connected inverter-based distributed generation. The maximum power transfer capability of a distributed generator (DG) is analyzed. Sensitivity studies are conducted for DGs equipped with the Sandia frequency shift anti-islanding scheme. Factors such as positive-feedback gain, initial chopping fraction, local load level, and network line impedance are investigated. The maximum power transfer limit versus positive-feedback gain curve is proposed as an index for the stability analysis. The results show that the positive-feedback anti-islanding scheme does have the potential to destabilize the grid-connected DG system when the grid is weak or the DG size is large. A curve that relates the maximum stable DG power transfer level versus the islanding detection time is proposed to quantify the destabilizing effect of the positive-feedback-based anti-islanding schemes. |
| En ligne : | http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4567146&sortType%3Dasc_p_Sequence%26filter%3DAND%28p_IS_Number%3A4603059%29%26pageNumber%3D2 |
