Power quality evaluation system, power quality evaluation method, and power quality evaluation program

摘要

PPROBLEM TO BE SOLVED: To provide an electric power quality evaluating system capable of evaluating, while taking the occurrence probability of quality degradation into account. PSOLUTION: The electric power quality evaluating system comprises an electric power quality calculating means which calculates the quality of each watthour obtained from a power grid whose quality is to be evaluated, a probability density function generating means which generates probability density function of power quality value from the power quality value acquired by the electric power quality calculating means, a decision value setting means for setting a decision value which is a reference for discriminating the quality of electric power, and an electric power quality evaluating means which evaluates the quality of electric power by using the probability density function of the electric power quality value and the set the decision value. PCOPYRIGHT: (C)2005,JPO&NCIPI