String Failure Monitoring
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United States of America Patent
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app pub date -
Mar 2, 2012
filing date -
Sep 2, 2009
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Abandoned
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Abstract
A method of monitoring a plurality of strings of a photovoltaic system connected to a power inverter includes measuring current values from individual strings to the power inverter; determining a reference current value from the measured current values; and standardizing the measured current values to the reference current value. The method further includes and analyzing the standardized current values of individual strings within representative time periods by comparison with comparison values established for the individual strings. Based on the analysis a failure of an individual string is ascertained.
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