DEVICES AND TECHNIQUES FOR DETECTING FAULTS IN PHOTOVOLTAIC SYSTEMS
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United States of America Patent
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Issued Date -
Feb 26, 2015
app pub date -
Aug 26, 2014
filing date -
Aug 26, 2013
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Abandoned
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Abstract
Devices and techniques for detecting faults (e.g., ground faults) in photovoltaic (PV) systems are provided. A fault-detection impedance component may be included in a PV system on the path to equipment ground. The PV system may determine whether a ground fault exists based, at least in part, on a measured impedance between a conductor of the PV system and a ground node of the PV system, and on a reference impedance. When it is determined that a ground fault exists in the PV system, action may be taken to mitigate the ground fault.
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