Low‐carbon economic optimization method for integrated energy systems based on life cycle assessment and carbon capture utilization technologies.

Integrated energy system (IES) is one of the ways to realize energy saving and emission reduction. Facing the crisis of fossil energy depletion and the challenge of global warming, low‐carbon technology and market economic guidance mechanism have an important impact on the low‐carbon operation of integrated energy system (IES). In this study, IES with carbon capture and utilization (CCU) technology is established, the carbon emission model based on life cycle theory is built for the input energy and energy system of IES, and the ladder carbon trading mechanism is considered in the market economy to establish the low‐carbon economic optimization model of IESs. A system combining carbon capture technology and power to gas can effectively consume new energy sources and provide energy dispatch flexibility. The ability to capture greenhouse gases generated by energy units reduces the system's carbon emissions. Based on the IES low carbon economy model, the model is analyzed with examples to analyze the correlation between different carbon trading prices and IES low carbon economy transport. We analyze the impact of CCU technology inputs on the low‐carbon nature of IES. The study proposes an IES dispatching model based on life cycle assessment and CCU technology to provide a new strategy for the operation of IESs and a new method for other energy systems to reduce low carbon emissions. [ABSTRACT FROM AUTHOR]