Data type determination method and device, storage medium and electronic device

The invention discloses a data type determination method and device, a storage medium and an electronic device, and the method comprises the steps: obtaining first operation data of a target photovoltaic array; the first operation data are input into a first deep confidence model, a first probability set corresponding to the first operation data is obtained, the first probability set comprises probabilities of the first operation data belonging to multiple data types, and the first deep confidence model is obtained through training of second operation data; the second operation data comprises operation data corresponding to multiple data types; inputting the first probability set into a preset feature library for correction to obtain a second probability set; and determining a target data type to which the first operation data belongs in the multiple data types according to the second probability set. The problem that the obtained diagnosis result is inaccurate when fault diagnosis is carried out on the photo