Low-Carbon Dispatch of IES Considering SteppedCarbon Pricing and Adjustable Thermoelectric Ratio

Abstract

 Transitioning toward sustainable energy requires integrated energy
systems (IES) to prioritize both emission reductions and enhanced energy
efficiency. Traditional dispatch methods often struggle to maximize the
flexibility of power-to-gas (P2G) setups and adaptable heat-to-power
mechanisms due to rigid physical and environmental constraints. To address
this, we introduce an advanced dispatch framework that integrates an adjustable
thermoelectric ratio alongside a stepped carbon pricing model. By
implementing a tiered penalty for excessive emissions, the framework actively
promotes greener operations. Furthermore, we optimize multi-energy utilization
by splitting the standard P2G process into a two-phase system featuring an
electrolyzer (EL), a methane reactor (MR), and a hydrogen fuel cell (HFC).
This is coupled with a variable thermoelectric ratio for both the HFC and
combined heat and power (CHP) units, allowing for effective cogeneration
decoupling. Simulation results confirm that this approach eliminates wind
curtailment, significantly curbs carbon output, and bolsters economic viability
compared to standard dispatch techniques.