Study of Peak-load regulation characteristics of a 1000MWe S-CO2 Coal-fired power plant and a comprehensive evaluation method for dynamic performance

Ma, Teng; Sun, Qiuye; Xue, Xiaodai; Guo, Jiaqi; Wang, Wenqi; Jiang, Tao

doi:10.1016/j.applthermaleng.2022.119892

Cited by 22 publications

(2 citation statements)

References 31 publications

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“…This research covers evaluation methods, index systems, and model establishment, among other aspects. Ma et al [6] proposed a comprehensive dynamic performance evaluation method to comprehensively understand the overall performance of coal-fired units under load changes, and to provide a basis for future optimization and improvement. Filonchyk et al [7] conducted a comprehensive analysis of air pollution emissions from coal-fired power plants by using modeling techniques, and proposed the importance of coal power plants moving to sustainable energy systems.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Comprehensive Evaluation of a 660 MW Ultra-Supercritical Coal-Fired Unit Based on Improved Criteria Importance through Inter-Criteria Correlation and Entropy Weight Method

Yuan,

Ma,

Cheng

et al. 2024

Energies

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To address the issue of traditional static evaluation models being unable to comprehensively analyze the performance of ultra-supercritical coal-fired units under varying loads, we propose a dynamic comprehensive evaluation model based on the improved Criteria Importance Through Inter-criteria Correlation (CRITIC) method and entropy weight method (EWM). The comprehensive performance evaluation index system of ultra-supercritical coal fired units is constructed by examining the boiler performance, turbine performance, plant power performance, environmental performance, and flexible performance of coal-powered units. The CRITIC and EWM methods are used to calculate the weights of the indicators, which are then combined with the static evaluation results. Using a dynamic comprehensive evaluation model, we analyze ultra-supercritical coal-fired units, taking into account time weight. This allows us to obtain the comprehensive dynamic real-time evaluation value of the units under different loads. The research indicates that the weight of the evaluation index is changed when using the dynamic comprehensive evaluation model of the improved CRITIC and EWM. The index with lower weight is increased by 6.2%, while the index with higher weight is decreased by 0.22%. This alteration in weight range can provide a more objective reflection of the relationship between evaluation indicators. This model offers significant advantages in improving evaluation accuracy, weight balance distribution, and generality.

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Section: Introductionmentioning

confidence: 99%

Dynamic Comprehensive Evaluation of a 660 MW Ultra-Supercritical Coal-Fired Unit Based on Improved Criteria Importance through Inter-Criteria Correlation and Entropy Weight Method

Yuan,

Ma,

Cheng

et al. 2024

Energies

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show abstract

“…In recent years, the comprehensive performance evaluation methods of coal-fired power plants have emerged, and many scholars at home and abroad have proposed a variety of comprehensive evaluation methods, such as analytical hierarchy process, entropy weight method, rank-sum ratio comprehensive evaluation method and fuzzy comprehensive evaluation method [4]. Ma et al [5] proposed a comprehensive dynamic performance evaluation method to comprehensively understand the overall performance of coal-fired units under load changes, and to provide a basis for future optimization and improvement. Chen et al [6] used fuzzy analytical hierarchy process and improved criteria importance through intercriteria correlation (CRITIC) to empower evaluation indicators, which reflected the rationality of comprehensive evaluation indicators and the effectiveness of evaluation methods.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Comprehensive Evaluation of a 660MW Ultra-Supercritical Coal-Fired Unit Based on Improved Criteria Importance through Inter-criteria Correlation and Entropy Weight Method

Yuan,

Ma,

Cheng

et al. 2024

Preprint

View full text Add to dashboard Cite

To address the issue of traditional static evaluation models being unable to comprehensively analyse the performance of ultra-supercritical coal-fired units under varying loads, we propose a dynamic comprehensive evaluation model based on the improved Criteria Importance Through Inter-criteria Correlation (CRITIC) method and Entropy Weight Method (EWM). The comprehensive performance evaluation index system of ultra-supercritical coal fired units is constructed by examining the boiler performance, turbine performance, plant power performance, environmental performance, and flexible performance of coal powered units. The CRITIC and EWM methods are used to calculate the weights of the indicators, which are then combined with the static evaluation results. Using a dynamic comprehensive evaluation model, we analysed ultra-supercritical coal-fired units, taking into account time weight. This allowed us to obtain the comprehensive dynamic real-time evaluation value of the units under different loads. The research indicates that the dynamic comprehensive evaluation model, which uses an improved CRITIC and EWM, has significant advantages in improving evaluation accuracy, weight-balanced distribution, and generality. Provides more accurate, reasonable, and reliable evaluation results for practical decision making.

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Exploration and numerical study of new structures for high-efficiency and low-resistance vehicle-mounted plate-fin heat exchanger based on the three-field synergy principle

Jiang,

Li,

Yang

et al. 2024

Sci. China Technol. Sci.

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Study of Peak-load regulation characteristics of a 1000MWe S-CO2 Coal-fired power plant and a comprehensive evaluation method for dynamic performance

Cited by 22 publications

References 31 publications

Dynamic Comprehensive Evaluation of a 660 MW Ultra-Supercritical Coal-Fired Unit Based on Improved Criteria Importance through Inter-Criteria Correlation and Entropy Weight Method

Dynamic Comprehensive Evaluation of a 660 MW Ultra-Supercritical Coal-Fired Unit Based on Improved Criteria Importance through Inter-Criteria Correlation and Entropy Weight Method

Dynamic Comprehensive Evaluation of a 660MW Ultra-Supercritical Coal-Fired Unit Based on Improved Criteria Importance through Inter-criteria Correlation and Entropy Weight Method

Exploration and numerical study of new structures for high-efficiency and low-resistance vehicle-mounted plate-fin heat exchanger based on the three-field synergy principle

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