Fault Detection Calculator

Calculate power deviation thresholds for automated fault detection and alarm generation in PV monitoring systems.

Input Parameters

Results

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Power Deviation
%
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Expected at Irradiance
kW
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Est. Faulty Strings
--
Alarm Level
Note: Automated fault detection reduces O&M response time from days to hours. Use irradiance-corrected expected power to avoid false alarms from weather variations.

Reference

Expected at Irradiance = Rated × (Irr / 1000) Deviation = (Expected − Actual) / Expected × 100% Est. Faulty Strings = (Expected − Actual) / Per_string Alarm thresholds: <5% normal, 5-10% advisory, 10-20% warning, >20% critical