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US 12,009,783 B2Granted
Fault detection method, fault detection apparatus for photovoltaic module and computer-readable storage medium
AssigneeHuawei Digital Power Technologies Co., Ltd.
InventorsJianqiang Wang, Song Wan, Yanzhong Zhang, Yongbing Gao, Xinyu Yu
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Abstract
A fault detection apparatus includes an image capture module and a detection module, and the fault detection apparatus is configured to capturing an image of the photovoltaic module in a light emitting state, and performing fault 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.
Claims7
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.
10 more elements
A fault detection apparatus for a photovoltaic module, wherein the fault detection apparatus comprises:
- an image capture device configured to capture an image of the photovoltaic module in a light emitting state;
- and
- a processor configured to perform fault 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 processor is configured to determine whether the signal-to-noise ratio of the image is maximized, and when the signal-to-noise ratio of the image is not maximized, send an adjustment instruction to the power supply equipment to adjust a power supply parameter of the power supply equipment until the signal-to-noise ratio of the captured image is maximized;
- and wherein the power supply equipment is configured to adjust the power supply parameter based on the adjustment instruction and a preset 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 comprises a preset current curve, a preset voltage curve, or a preset power curve.
4 more elements
A computer-readable storage medium, wherein the computer-readable storage medium stores a program instruction, wherein when the program instruction is executed by a device comprising a processor, the instructions cause the device to:
- capture an image of the photovoltaic module in a light emitting state;
- and
- perform fault 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 instructions further cause the device to:
- determine whether the signal-to-noise ratio of the image is maximized;
- and
- when the signal-to-noise ratio of the image is not maximized, send 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 send an adjustment instruction to the power supply equipment to adjust a power supply parameter of the power supply equipment comprises:
- send 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.
10 more elements
Dependencies are inferred from the claim text.