| Title |
Islanding Detection for Grid-connected PV Inverter under Parallel Operation |
| Authors |
Yeong-Min Jo ; Dong-Gyun Kim ; Seung-Ho Song ; Ick Choy ; Young-Kwoun Lee ; Sang-Yoon Cho ; Ju-Yeop Choi |
| DOI |
10.6113/TKPE/2016.21.4.283 |
| Keywords |
Grid-connected photovoltaic inverter; Anti-islanding; Parallel operation; NDZ(Non Detection Zone); THD(Total Harmonic Distortion) |
| Abstract |
Islanding protection of a grid-connected photovoltaic (PV) inverter is a key function for standards compliance. Unintentional islanding results in safety hazards, reliability, and many other issues. Therefore, many anti-islanding schemes have been examined. However, existing anti-islanding schemes have poor power quality and non-detection zone issues. Moreover, most schemes have problems that deteriorate the performance of islanding detection under parallel operation. Therefore, this paper proposes a novel anti-islanding scheme that has negligible power quality degradation and has no non-detection zone and islanding detection under a parallel operation. Both simulation and experimental results validate the proposed scheme. |