Determining the relative effectiveness of islanding detection methods using phase criteria and nondetection zones
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Islanding of a utility-interactive photovoltaic (UIPV) system occurs if the UIPV system continues to power a section of the utility system after that section has been disconnected from the utility source. Since islanding creates hazards for personnel and equipment, UIPV systems are required to detect and prevent it. It is desirable to have a simplified method of determining which islanding detection methods (IDM's) are most effective. In this paper, a previously described method for finding the nondetection zones (NDZ's) of IDM's is experimentally verified. This method is used to determine the NDZ's of several common IDM's. These results indicate that, of the IDM's discussed in this paper: 1) Sandia Frequency Shift (SFS) is most effective; 2) the worst-case loads are low-power loads that are near resonance at the line frequency and have a large capacitance and small inductance (a high value of the quality factor Q).
IEEE Transactions on Energy Conversion
author list (cited authors)
Ropp, M. E., Begovic, M., Rohatgi, A., Kern, G. A., Bonn, R. H., & Gonzalez, S.
complete list of authors
Ropp, ME||Begovic, M||Rohatgi, A||Kern, GA||Bonn, RH||Gonzalez, S