Electronic device for monitoring abnormal state of energy consumption and method of operating the same

A method of operating an electronic device, the method comprising:

• receiving factory data related to product production of a factory and energy used in the factory;
• determining an energy stability indicator (ESI) indicating an amount of the energy used for the product production based on the factory data, for each of a plurality of time instances within a preset time period;
• generating a normalized energy stability indicator distribution (ESID) with respect to the preset time period based on a plurality of ESI values determined during the preset time period;
• determining a distribution difference based on relative entropy using information entropy by comparing the generated ESID and a reference distribution predetermined for energy consumption of the factory, each of the generated ESID and the reference distribution being a distribution of ESI values;
• and
• outputting one or more observed variables for monitoring an abnormal state of consumption of the energy with respect to a period in which the distribution difference is large,
• wherein data of the ESID is n-dimensional time-series data,
• wherein the relative entropy indicates Kullback-Leibler divergence (KLD),
• wherein the generating of the ESID comprises generating a probability density function with respect to the plurality of ESI values determined for the preset time period, and
• wherein the outputting of the one or more observed variables determines one or more correlation coefficients for a linear relationship between the one or more observed variables and outputs the one or more observed variables by sorting the one or more correlation coefficients in order of high correlation coefficient.