By taking solar gas-steam combined cycle as the research object

this paper establishes a steady state model of integrated solar cycle cogeneration(ISCC) system. The effects of solar radiation intensity on operation performance of the ISCC cogeneration unit overall system and the thermal parameters are analyzed. On this basis

the operation characteristics and thermoelectric load capacity of the system before and after the solar energy is introduced is investigated. The results show that

the exergy efficiency of the ISCC system increases gradually with the solar radiation intensity. The system's cycle thermal efficiency rises with the gas turbine's load rate and the external heating capacity of the ISCC system. The solar energy configuration in ISCC system increases the peak adjustment range of the unit

promotes the thermal power decoupling of the unit

and the solar energy complementary potential of the ISCC unit increases at first and then decreases with the increase of the gas turbine load. The research results can provide theoretical and design basis for ISCC application in cogeneration.