Photovoltaic inverter fault diagnosis method and system
A photovoltaic inverter and fault diagnosis technology, which is applied to instruments, measuring electrical variables, measuring devices, etc., can solve problems such as sample fault feature extraction, and achieve the effect of improving diagnosis accuracy and improving decision-making paths.
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[0047] The invention adopts the MCKD method to extract the fault features of the samples, and then uses the decision-oriented acyclic graph to perform multi-classification expansion on the support vector machine, constructs a fault classifier, and finally realizes the fault diagnosis of the photovoltaic inverter.
[0048] The specific embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0049] Schematic diagram of a photovoltaic inverter fault diagnosis method flow chart figure 1 shown.
[0050] The method includes:
[0051] Collect the operating data of photovoltaic inverters to form test samples;
[0052] Bringing the test sample into a pre-built multi-classifier model to obtain the sample type corresponding to the test sample;
[0053] Obtain the fault type of the inverter according to the sample type;
[0054] The multi-classifier model includes a multi-classifier composed of multiple binary cla...
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