CPC H02S 50/15 (2014.12) [H02H 1/0007 (2013.01); H02H 7/20 (2013.01)] | 7 Claims |
1. A fault detection method for a photovoltaic module, comprising:
capturing an image of the photovoltaic module in a light emitting state; and
performing detection on the photovoltaic module based on the image when a signal-to-noise ratio of the image is maximized, to identify a fault type of the photovoltaic module;
wherein the photovoltaic module emits light in response to action of power supply equipment;
wherein the fault detection method further comprises:
determining whether the signal-to-noise ratio of the image is maximized; and
when the signal-to-noise ratio of the image is not maximized, sending an adjustment instruction to a power supply equipment to adjust a power supply parameter of the power supply equipment until the signal-to-noise ratio of the image is maximized;
wherein the sending an adjustment instruction to the power supply equipment to adjust a power supply parameter of the power supply equipment comprises: sending the adjustment instruction to the power supply equipment, so that the power supply equipment adjusts the power supply parameter based on a preset curve or a reference curve; and wherein the power supply parameter comprises a current parameter, a voltage parameter, or a power parameter; and corresponding to the power supply parameter, the preset curve is a preset current curve, a preset voltage curve, or a preset power curve; and corresponding to the power supply parameter, the reference curve comprises a current-voltage reference curve, a power-voltage reference curve, or a power-current reference curve.
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