Is deep peak shaving feasible for coal power?

While previous studies have explored the technical feasibility of deep peak shaving for coal power, there is a scarcity of research addressing the delicate balance between the costs of flexibility retrofitting and the benefits of promoting renewable energy integration in power system.

How does peak shaving affect a power plant?

Combustion efficiency may decrease during peak shaving, especially under low-load operation, which can lead to an increase in the overall coal consumption rate, significantly affecting the power plant's operational costs.

How can TES technology improve peak shaving efficiency?

In addition to the integration of TES technology, the incorporation of flywheel energy storage, CAES, and electrochemical energy storage has also demonstrated promising frequency regulation and peak shaving effects.

How does HPD improve peak shaving flexibility in combined CHP plants?

Peak shaving flexibility in combined CHP plants is enhanced by HPD through the efficient separation of electrical and thermal energy. Deep peak shaving capacity is expanded by integrated energy storage, including CAES and molten salt thermal storage, by offering an external energy buffer.

Is multi-energy coupling a viable path forward for deep peak shaving and frequency regulation?

Tian et al. analyzed the current state and advancements in deep peak shaving and frequency regulation under carbon neutrality targets, including pumped hydro storage, compressed air energy storage, and flywheel energy storage, and proposed multi-energy coupling as an optimal path forward.

How does flexible peak shaving affect grid stability?

In summary, operational safety and efficiency are not only affected, but grid stability is also significantly challenged by the equipment and technical limitations, inadequate control strategies, and environmental and economic pressures that CFPPs face in flexible peak shaving.