At the same time, this paper explores the mechanism of energy storage assisting the thermal power unit peak shifting to build an economic decision-making model and its optimal operation strategy that includes the factors of energy storage life loss and the cost of peak shifting of the thermal power unit.
According to the generator output curve and energy storage output curve, the peak regulating effect of energy storage after parameter optimization is better than that without parameter optimization.
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.
To optimize the energy storage capacity suitable for thermal power units and the charging and discharging strategies of energy storage, a robust optimization configuration and economic operation method for energy storage thermal power unit peak regulation system (ESTPPR) is provided.
Traditional thermal power units convert the heat energy generated by the combustion of fossil energy into electric energy, and the energy storage system converts chemical energy into electric energy through the process of charge and discharge. The output modes and output characteristics of the two are different.
The connection of energy storage devices to the power grid can not only effectively utilize the power equipment, reduce the power supply cost, but also promote the application of new energy, improve the stability of the system operation, reduce the peak–valley difference of the power grid, and play an important role in the power system.
According to the above analysis, the energy storage technology can effectively improve the frequency regulation performance by assisting thermal power units to participate in power grid frequency regulation, and the control strategy proposed in this paper can prolong the service life of the energy storage system.
At the same time, this paper explores the mechanism of energy storage assisting the thermal power unit peak shifting to build an economic decision-making model and its optimal operation strategy that includes the factors of energy storage life loss and the cost of peak shifting of the thermal power unit.
Simulation experiments are conducted based on actual operational parameters, and the results demonstrate that the participation of energy storage in deep peak shaving can indeed effectively...
With the rapid development of new energy sources and the increasing proportion of electric vehicles (EVs) connected to the power grid in China, peak load regulation of power systems will face ...
Scenario 3 is used to evaluate the effect of energy storage on peak regulation and examine the impact of energy storage on power system operation without the demand response. Scenario 4 incorporates both demand response and energy storage for peak regulation. Scenario 4 integrates both flexibility resources to verify the proposed bi-level …
Simulation experiments are conducted based on actual operational parameters, and the results demonstrate that the participation of energy storage in deep peak shaving can …
Coupling energy storage system is one of the potential ways to improve the peak regulation and frequency modulation performance for the existing combined heat power plant. Based on the characteristics of energy storage types, achieving the accurate parameter design for multiple energy storage has been a necessary step to coordinate regulation.
Scenario 2: energy storage participating in the peak regulation, where the combined participation of thermal power and energy storage is considered in the wind power peak regulation. Based on the RPR, DPR, and DPRO states of the TPGs, an ESS with a capacity of 2400 MW h is considered. The maximum charge and discharge power is 400 MW, and the …
In recent years, with the rapid development of the social economy, the gap between the maximum and minimum power requirements in a power grid is growing [1].To balance the peak–valley (off-peak) difference of the load in the system, the power system peak load regulation is utilized through adjustment of the output power and operating states of …
Lithium-ion battery can completely eliminate the unmet load because of its higher round-trip efficiency and depth of discharge. Overall, ES can effectively assist thermal power units in peak-shaving regulation and improve the power supply reliability. Figure 6 shows the available energy variation of different ES technologies. It coincides with ...
Rapid response technology of energy storage allows optimizing the power structure, increasing the capacity of the system, improving the efficiency of the power system in the power supply system, the addition of energy storage system in the power system can …
Energy storage is one of the most effective solutions to address this issue. Under this background, this paper proposes a novel multi-objective optimization model to determine the optimal allocation capacity of energy storage in a thermal power plant for provision of peak regulation service in smart grid. To achieve this, we limit our study to ...
Wind and solar power generation are highly uncertain, intermittent, and random, leading to frequent deep peaking of coal-fired thermal power units, and the resulting coal consumption costs, unit wear and tear costs, and additional environmental costs make thermal power plants much less economically viable [1,2,3,4,5,6] response to the current increasing …
To optimize the energy storage capacity suitable for thermal power units and the charging and discharging strategies of energy storage, a robust optimization configuration and …
Rapid response technology of energy storage allows optimizing the power structure, increasing the capacity of the system, improving the efficiency of the power system in the power supply system, the addition of energy storage system in the power system can effectively reduce the load peak valley difference, improve the energy utilization in the ...
When the energy storage assists the thermal power unit to participate in the AGC frequency regulation operation, the rapidity of the energy storage system is used to absorb or emit the overflow/absence power between the output of thermal power unit and the AGC signals, and reduce the deviation of the unit''s individual tracking AGC signals and ...
Coupling energy storage system is one of the potential ways to improve the peak regulation and frequency modulation performance for the existing combined heat power …
The peak regulation cost of thermal power units mainly includes coal consumption cost, wear cost, ... compared and analyzed the impacts of grid integration of different renewable mixes on the power system flexibility from thermal power units and energy storage. Through case studies, the following conclusions can be drawn. 1) When the renewable …
Energy storage is one of the most effective solutions to address this issue. Under this background, this paper proposes a novel multi-objective optimization model to determine …
Also, the peak-regulation capability determines the renewable energy consumption and power loads of cities by mitigating power output fluctuation in the regulation process of power grid. The environmental and sustainable urban development would be directly affected when the limited urban energy resources cannot satisfy the peak-regulation demands …
At the same time, this paper explores the mechanism of energy storage assisting the thermal power unit peak shifting to build an economic decision-making model and its optimal operation strategy that includes the …
With a low-carbon background, a significant increase in the proportion of renewable energy (RE) increases the uncertainty of power systems [1, 2], and the gradual retirement of thermal power units exacerbates the lack of flexible resources [3], leading to a sharp increase in the pressure on the system peak and frequency regulation [4, 5]. ...
When the energy storage assists the thermal power unit to participate in the AGC frequency regulation operation, the rapidity of the energy storage system is used to …
To fully utilize energy storage to assist thermal power in improving scheduling accuracy and tracking frequency variations, as well as achieving coordinated control of the frequency regulation power in the ESCTPFR system, this paper proposes a multi-constraint optimization control model based on the thermal and energy storage frequency ...
To enlarge the regulation capacity of the power system, some thermal power plants have a specially built energy storage system for peak regulation. However, building energy storage systems specifically on the side of thermal power plants has a relatively high investment cost (Lai et al., 2021).
DOI: 10.1016/j.epsr.2024.110354 Corpus ID: 268763996; Flexibility enhancement of renewable-penetrated power systems coordinating energy storage deployment and deep peak regulation of thermal generators
To enlarge the regulation capacity of the power system, some thermal power plants have a specially built energy storage system for peak regulation. However, building energy storage systems specifically on the side …
Energy storage system (ESS) has become a suitable source for frequency regulation, which can effectively assist thermal power plants in frequency regulation. This paper establishes a thermal power plant-energy storage integrated system and propose a coordinated control strategy for improving the secondary frequency regulation performance. With ...
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