1. An electrical storage capacitor system having an initializing function, said electrical storage capacitor system comprising: plural capacitors connected in series and acting to store electricity; a variation decision means for judging an amount of variation in amount of charge among said capacitors; an operation decision means for judging whether said capacitors are being charged or discharged; and an initializing charging means for charging said capacitors to initialize them to their initial state according to results of decisions made by said variation decision means and by said operation decision means.