Potential of applying the thermochemical recuperation in combined cooling, heating and power generation: Route of enhancing the operation flexibility

Yuan, Yu; Zhang, Bai; Liu, Qibin; Hu, Wenxin; Zheng, Bo

doi:10.1016/j.apenergy.2021.117470

Cited by 20 publications

(2 citation statements)

References 48 publications

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“…Modifying the thermal system configurations of coal power units can improve their operational flexibility [18]. Much research has been conducted on the system optimization and performance evaluation of coal power plants for promoting load regulation [19][20][21]. Besides, the transient characteristics and related control strategies of power generation units during load variations have drawn a critical mass of attention.…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of a 300 MW Coal-Fired Power Unit during the Transient Processes for Peak Shaving

et al. 2023

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A simulation model based on Dymola modelling was developed to investigate the dynamic characteristics of automatic generation control (AGC) for variable-load thermal power units in this study. Specifically, a 300 MW unit from a power plant in northern China was used to verify the model’s validity in steady-state processes and to analyze the behavior of the main thermal parameters under different rates of load changes. The economic performance of the unit under different rates of load changes is also analyzed by combining the economic indexes of “two regulations” in the power grid. Results indicate that as the rate of load changes increases, boiler output, main steam temperature, reheat steam temperature, main steam pressure, and working temperatures of various equipment fluctuate more intensely. Specifically, at a rate of load reduction of 2.0% Pe MW/min, the maximum deviation of the main steam temperature can reach 7.6 °C, with the screen-type superheater experiencing the largest heat exchange. To achieve a balance between safety and economics for the unit, the rate of load raising should not exceed 1.2% Pe MW/min, and the rate of load reduction should not exceed 0.8% Pe MW/min. This paper applies the covariance index and AGC assessment index of the thermal power unit load control system to the established dynamic simulation model to supplement the AGC assessment index in the “two regulations”, and to provide a flexible and reasonable system evaluation result for field operators to refer to, so as to improve the economics of the system on the basis of safety.

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Section: Introductionmentioning

confidence: 99%

Performance Analysis of a 300 MW Coal-Fired Power Unit during the Transient Processes for Peak Shaving

et al. 2023

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“…Moreover, the possibility of CCHP reaching the IDR scheduling goal alone was not considered. Considering this situation, some scholars studied the application of CCHP in demand response and drew valuable conclusions [13][14][15][16]. In these studies, the demand response operation and economic optimization among different energy systems were well explored.…”

Section: Introductionmentioning

confidence: 99%

A Cost Optimization Method Based on Adam Algorithm for Integrated Demand Response

Cheng,

2023

Electronics

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Demand response has gradually evolved into integrated demand response (IDR) as energy integration technology develops in integrated energy systems (IESs). The IES has a large amount of data interaction and an increasing concern for users’ privacy protection. Based on the combined cooling, heating, and power model, our study established an IDR management model considering demand-side energy coupling, focusing on cost optimization. In terms of privacy protection in the IDR management process, an optimization method based on the Adam algorithm was proposed. Only nonsensitive data, such as gradients, were transmitted during the processing of the Adam-based method by relying on a centralized iterative computing architecture similar to federated learning. Thus, privacy protection was achieved. The final simulation results proved that the proposed IDR management model had a cost reduction of more than 9% compared with a traditional power demand response. Further simulations based on this model showed that the efficiency and accuracy of the proposed Adam-based method are better than those of other distributed computing algorithms.

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Building energy demand management strategies and methods

Duraković

Hadziabdić

Büyükdağlı

2023

Building Energy Flexibility and Demand Management

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Potential of applying the thermochemical recuperation in combined cooling, heating and power generation: Route of enhancing the operation flexibility

Cited by 20 publications

References 48 publications

Performance Analysis of a 300 MW Coal-Fired Power Unit during the Transient Processes for Peak Shaving

Performance Analysis of a 300 MW Coal-Fired Power Unit during the Transient Processes for Peak Shaving

A Cost Optimization Method Based on Adam Algorithm for Integrated Demand Response

Building energy demand management strategies and methods

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