The invention discloses an
energy storage battery fault early warning method and
system based on
big data analysis, and relates to the technical field of
big data analysis, and the method comprises the steps: collecting multi-
source data, carrying out the preprocessing, extracting the features of the multi-
source data, and constructing an input vector; setting an implicit
state vector by using a
Delphi method, and generating an input pair for prediction in combination with the input vector to obtain an optimal
voltage prediction value; a compensation vector is constructed based on the optimal
voltage predicted value, after independent MLP sub-networks are established for the positive
electrode and the negative
electrode of the
energy storage battery respectively, the compensation vector serves as input, non-ideal
voltage correction values under the positive
electrode and the negative electrode are obtained, the optimal voltage predicted value is corrected, and a final correction voltage value is obtained; according to the method, the
false alarm rate and the
delay rate can be remarkably reduced, high-precision recognition and active early warning of early faults can be achieved in the
energy storage field
station-level application, and the
system safety and the operation and maintenance efficiency are greatly improved.