Energy storage system and deep peak load regulation

Do thermal power units provide deep peak regulation?

Specifically, first, the flexibility requirement of renewable integration is quantified, and the operating characteristics of thermal power units providing deep peak regulation are modeled. On this basis, a capacity optimization for BES is proposed considering peak regulation characteristics of thermal power units.

How can peak regulation be exploited from both power and load sides?

To exploit peak regulation resources from both power and load sides has garnered significant attention from scholars worldwide. On the power side, thermal power plants serve as the primary source for peak regulation in China, with deep peak shaving (DPS) becoming standard practice.

Is there a trade-off between energy storage and peak regulation?

In the meantime, the trade-off between deploying energy storage and leveraging the deep peak regulation capacity of existing thermal generators remains to be explored.

Is a capacity optimization for BES based on peak regulation characteristics?

On this basis, a capacity optimization for BES is proposed considering peak regulation characteristics of thermal power units. Extensive case studies on a modified IEEE system compared and analyzed the impacts of grid integration of different renewable mixes on the power system flexibility from thermal power units and energy storage.

What is the optimal energy storage allocation model in a thermal power plant?

On this basis, an optimal energy storage allocation model in a thermal power plant is proposed, which aims to maximize the total economic profits obtained from peak regulation and renewable energy utilization in the system simultaneously, while considering the operational constraints of energy storage and generation units.

How does peak regulation affect the operating state of thermal power units?

While at the phase of normal peak regulation, the operation cost increases as the power output increases. Therefore, for economic operation, the optimal operating state of thermal power units better be maintained near the lower limit of normal peak regulation. Fig. 3. Deep peak regulation cost of thermal units.