Novel Technologies of Flexible Coal-fired Power Generation to Support China Energy Transition:Coal-fired Coupled Energy Storage System and Smart Control System
China is progressively establishing a clean,low-carbon,safe,and efficient energy system,where the new type of power system,dominated by renewable energy,imposes stricter requirements on the flexible operation and optimized control of coal-fired power generation units.A coal-fired coupled energy storage systems represent an effective approach to enhance the peak-shaving and support capability of the units.Flexible operation creates practical demands for smart control,which in turn provides technical support for flexibility,making the development of smart control systems a starting point for enhancing the peak-shaving and support capability of the units.This paper thoroughly reviews the research progress on coal-fired coupled with energy storage systems and control systems in flexible coal-fired power generation.It compares the characteristics,application fields,and existing problems of various coal-fired coupled with energy storage systems.Furthermore,it discusses the current status and challenges of state monitoring,automatic control,and operation optimization in the intelligent construction of coal-fired power unit control systems,covering perception,analysis,decision-making,and control aspects.The paper explores new technologies supporting China's energy transition in flexible coal-fired power generation from three aspects:reconstruction of molten salt thermal storage systems in energy storage,design of key components,and non-electric trace heating,as well as three dimensions of smart control systems,including ubiquitous sensing,smart control,and smart operation.It provides a forward-looking perspective on the future research and development directions for coal-fired power generation units,offering references for the flexible operation and smart construction of coal-fired power generation units.
coal-fired generating unitsflexible operationenergy storage systemsmart control