The CCHP system can provide with cold

thermaland electric power simultaneously

which has good economic and en.vironmental protection.However

due to the great fluctuation of us.ers at different periods

the system can not operate at rated power allday

and the system can not meet the user's demand fully

it makesCHHP can not have a good economical efficiency.In order to betterplay the operation efficiency and improve the economy of the sys.tem

the research has considered the peak valley price based on theCCHP system

and research about the optimal configuration of thesystem.In addition

the research considered the uncertainty of theusers demand and the fluctuation of the electricity price

also thesensitivity analysis of the electricity price and the operation hours ofCCHP system is carried out.Finally the paper gets the interval ofsystem economic operation.By quantifying operations

uses canchoose the right system based on the price of electricity or the user'sspecific energy needs in actual operation.The research analyzes theoperation economy and sensitivity of the CHHP.It is concluded thatthe system with energy storage device can not only meet the user'sdemand for energy consumption in different periods of the year

butalso provide the best economic results.