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Simulation on dynamic characteristics of a supercritical 660 MW once-through boiler
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Chao WANG1, 2, Baorui ZHANG3, Kairui LIU2, Hailong FAN1, Bin LIU2, Xiang QUAN1, Limin WANG2, Defu CHE2
Thermal Power Generation | 2024, 53(1) : 124 - 133
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Thermal Power Generation | 2024, 53(1): 124-133
• Thermal energy science research •
Simulation on dynamic characteristics of a supercritical 660 MW once-through boiler
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Chao WANG1, 2, Baorui ZHANG3, Kairui LIU2, Hailong FAN1, Bin LIU2, Xiang QUAN1, Limin WANG2, Defu CHE2
Affiliations
  • 1.Inner Mongolia Electric Power Research Institute, Hohhot 010020, China
  • 2.State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China
  • 3.Inner Mongolia Three Gorges Mengneng Energy Co., Ltd., Hohhot 010020, China
Published: 2024-01-25 doi: 10.19666/j.rlfd.202304075
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To improve the flexibility of coal-fired units, boilers need to have good controllability and the ability to adapt to rapid load changes. The flexibility of the boiler is closely related to the performance of the control system, which is designed according to the dynamic characteristics of boilers. To study the dynamic characteristics of boilers, a dynamic model of a supercritical 660 MW coal-fired boiler is built in the Dymola platform. The results show that the response time of steam temperature is longer than that of steam flow. When the feedwater temperature, feedwater flow, and fuel quantity are stepped increase by 5%, the main steam temperature changes by 10.2 ℃, –28.5 ℃, and 35.7 ℃, respectively. In the process of adjusting the water-fuel ratio of the boiler, different times of change in feedwater and fuel flow can have different effects on the main steam temperature. The maximum deviation of the main steam temperature during the transient process reduces by 27.4 ℃ when the feedwater flow is delayed by approximately 100 s compared with the fuel flow. When the load change amplitude is the same, the larger the load change rate, the more severe the fluctuation of the main steam parameters, and the longer it takes to stabilize.

dynamic characteristics  /  once-through boiler  /  water-fuel ratio  /  load variation  /  flexibility
Chao WANG, Baorui ZHANG, Kairui LIU, Hailong FAN, Bin LIU, Xiang QUAN, Limin WANG, Defu CHE. Simulation on dynamic characteristics of a supercritical 660 MW once-through boiler[J]. Thermal Power Generation, 2024 , 53 (1) : 124 -133 . DOI: 10.19666/j.rlfd.202304075
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  • Science and Technology Project of Inner Mongolia Power Research Institute(ZC-2021-01)
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Year 2024 volume 53 Issue 1
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Article Info
doi: 10.19666/j.rlfd.202304075
  • Receive Date：2023-04-24
  • Online Date：2025-12-25
  • Published：2024-01-25
Article Data
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History
  • Received：2023-04-24
Funding
Science and Technology Project of Inner Mongolia Power Research Institute(ZC-2021-01)
Affiliations
    1.Inner Mongolia Electric Power Research Institute, Hohhot 010020, China
    2.State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China
    3.Inner Mongolia Three Gorges Mengneng Energy Co., Ltd., Hohhot 010020, China
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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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