Abstract: As an important part of the new generation energy system， integrated energy system includes electricity， heat， natural gas and other energy systems， where the coupling among different energy systems is strong. This paper puts forward the architecture of cyber physical system （CPS） for integrated energy system， and expounds the hierarchical application and technical characteristics of CPS. Meanwhile， a thorough discussion on the key technologies of CPS for integrated energy system is proposed. Finally， in order to verify the architecture of CPS and related technologies proposed in this paper， an integrated energy management and optimization system is developed， which realizes energy monitoring， modeling and simulation of multi-energy flow， source-load prediction， system operation optimization， fault prediction and health management. The five functions strongly support the architecture of integrated energy system proposed in this paper.

Key words:  cyber physical system（CPS）, integrated energy, architecture, prognostics and health management, multiple energy flows