Data analysis device, power flow analysis device and data analysis method

摘要

The term-specific time-series data creation unit creates time-series data for each term including the differential term based on the time-series data, and the linear sum generation section is the product of each term and coefficient for each time of the time-series data. The positive value of the linear sum is generated, and the coefficient determination unit makes each of the positive values of the linear sum in the time interval or space interval targeted by the time series data equal to or less than the set value or approaches 0. The coefficient of the term is determined, and the governing equation output unit outputs the linear sum of the products of the coefficient determined by the coefficient determining unit and each term as the governing equation of the time series data.