Abstract:In order to enhance the consumption of renewable energy in integrated energy systems（IES）and achieve low-carbon emissions，this paper proposes a low-carbon scheduling strategy for integrated energy systems that considers demand response and power to gas and carbon capture system（P2G-CCS）coupling at multiple time scales. Firstly，an IES mathematical model with P2G-CCS coupling and considering load side demand response was established. Secondly，a tiered carbon trading model was established to constrain carbon emissions. Finally，a multi-time scale low-carbon scheduling strategy for IES with complementary sources and loads is proposed，and a daily intraday real-time scheduling model is constructed with gas and coal consumption costs，carbon storage costs，carbon trading costs，unit start-up and shutdown costs， and wind and solar curtailment costs as objective functions. The calculation results show that the proposed model effectively improves the economic benefits，low-carbon benefits，and energy utilization efficiency of IES.