Investigation of potential islanding problems of a line-commutated static power converter in photovoltaic systems

The results of a research project on the possible islanding operation of a section of a distribution feeder containing line-commutated static power converters are reported. The project's approach is to develop a computer model of the static power converter (SPC) to predict islanding operation and verify the model with laboratory and field tests. The computer model accurately predicts the operation of the SPC during islanding. The effect of general system parameters on the islanding performance of the Gemini line-commutated SPC are presented. The most important factor which determines the characteristics of the island is the mismatch of watts and Vars at the time the island is formed.<
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