Optimized Capacity Allocation for a Hybrid Wind Turbine-Photovoltaic-Carbon Capture Coal-Fired Power Unit-Energy Storage System Considering Deep Peaking
Zeyu Wang

Department of Economics and Management, North China Electric Power University,Hebei Baoding,071003;

Abstract: With the rapid expansion of wind and photovoltaic energy production, coupled with stricter environmental regulations, traditional coal-fired power plants face the risk of obsolescence. Nonetheless, many coal-fired power units (CFPUs) remain economically viable and technically operational, with substantial service life remaining. To maximize the utility of these CFPUs during the energy transition, this study presents a hybrid system integrating wind turbine, photovoltaic, energy storage system, and carbon capture coal-fired power unit (CCPU). This system leverages modified carbon capture utilization and storage (CCUS) technology to improve the deep peaking capability of CCPU. By designing different scenarios, the case study shows that the deep peaking capability of CCPU can effectively improve the utilization of renewable energy, reduce the capacity demand of the energy storage system, and ultimately realize the reduction of system cost.

Keywords: Coal-fired power unit;Carbon capture utilization and storage;Energy storage; Deep peaking; Capacity optimization

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