POWER SUPPLY SYSTEM AND PROGRAM FOR THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a power supply system and its program capable of suppressing influence of a fringe component by changing its degree of smoothing so as to weaken the degree of smoothing the current total demand in the case that steep change in a long period occurs and strengthen the degree in the case other than the occurrence of the steep change.SOLUTION: A power supply system comprises: a current total demand calculation unit 31 for calculating current total demand 51 from current power generation output of a power generator 10; a smoothing unit 32 for smoothing the current total demand 51 to calculate smoothed current total demand 52; a smoothing degree change unit 33 for changing a smoothing degree of the smoothing unit 32; a prediction total demand curve change unit 34 for calculating a modified prediction total demand curve 54 by modifying a prediction total demand curve so that the prediction total demand curve agrees with the smoothed current total demand 52 at current time; and a power generator control unit 35 for calculating power generator output to maintain power supply/demand balance, from the modified prediction total demand curve 54 and the current power generation output of the power generator 10.