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In the context of achieving “dual-carbon” goals, power units function as adaptable power sources for integrating new energy sources, posing significant challenges to their power generation flexibility. The dry-wet joint cooling system plays a pivotal role in ensuring the safe and stable operation of power units. Therefore, there is an urgent need to optimize the operational strategy of the dry-wet joint cooling system to enhance its flexibility and economic efficiency. Focusing on the dry-wet joint cooling system of a 660 MW generator set, a multi-layer perceptron (MLP) neural network model has been established to predict the outlet temperature of the cooling water. A mixed integer nonlinear programming (MINLP) model is formulated and linearized based on actual operating condition constraints. By solving the MLP-MINLP optimization model, the optimal operation strategy for variable-frequency fans in each operating condition of dry-wet joint cooling system is determined, successfully reducing its power consumption. The results indicate that, after optimizing the configuration of variable-frequency fans, there is a significant reduction in total power by approximately 11.16%, and implementing different frequency operations for variable-frequency fans can reduce total power by about 3.62%~5.38% in a limited manner. The MLP-MINLP optimization model can achieve precise and low-power operation of dry-wet joint cooling system, offering a viable solution for optimizing dry-wet joint cooling systems.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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