Excitation system rectifier cabinet current sharing early warning method and device

The invention provides an excitation system rectifier cabinet current sharing early warning method and device, and relates to the technical field of excitation systems, and the method comprises the steps: based on the excitation current of each excitation system rectifier cabinet in an excitation system, calculating a current sharing coefficient corresponding to the excitation system, and the excitation current deviation between the excitation system rectifier cabinets; according to the total excitation current of the excitation system, calculating a theoretical current sharing coefficient, and when the current sharing coefficient is different from the theoretical current sharing coefficient, sending out an excitation current sharing early warning signal; according to excitation current deviation among the excitation system rectifier cabinets, an abnormal excitation system rectifier cabinet is positioned, and early warning of the abnormal excitation system rectifier cabinet is carried out, so that real-time a