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以某660 MW超超临界二次再热尾部三烟道燃煤锅炉为研究对象，基于GSE软件建立了二次再热锅炉动态仿真模型，详细计算了100%THA工况下煤量、给水流量、给水温度以及过量空气系数扰动后主蒸汽、一次再热蒸汽和二次再热蒸汽参数变化过程，并对比了100%THA、75%THA、50%THA工况下锅炉蒸汽温度的变化规律。结果表明：给水温度扰动后锅炉出口蒸汽参数的响应最慢，100%THA工况下稳定时间约2 300 s；过量空气系数扰动后响应最快，稳定时间约720 s；煤量和给水流量则介于前两者之间，稳定时间分别约为1 040 s和1 250 s；在煤量、过量空气系数、给水温度扰动后的初始阶段，锅炉出口蒸汽温度会出现短时“反向”变化；此外，二次再热锅炉的热惯性会随着负荷降低而增大。仿真计算的二次再热尾部三烟道燃煤锅炉动态特性，可为进一步优化机组运行控制策略提供依据。
Abstract：The ultra-supercritical double-reheat power generation technology has become an important development direction of thermal power generation technology due to its high efficiency and low emissions. A dynamic simulation model of the double-reheat boiler was established by the GSE software based on a 660 MW ultrasupercritical double-reheat coal-fired boiler with triple-rear passes. The variation laws of the main, primary, and secondary reheat steam parameters after disturbance by coal flow rate, feed-water flow rate, feed-water temperature and excess air coefficient under 100%THA working condition were calculated in detail. Moreover, the variation laws of steam temperature at the boiler outlet under the working conditions of 100%THA, 75%THA and 50%THA were compared. The simulation results show that the response of steam parameters at the boiler outlet is the slowest after feed-water temperature is disturbed, and the stability time is approximately 2 300 s under 100%THA working condition. The response of steam parameters at the boiler outlet is the fastest after excess air coefficient is disturbed, and the stability time is approximately 720 s. The stability times of the steam parameters at the boiler outlet are approximately 1 040 s and 1 250 s respectively after coal flow rate and feed-water flow rate are disturbed. In the initial stages of transient processes after coal flow rate, excess air coefficient and feed-water temperature are disturbed, there are short-term “reverse” changes in the steam temperature at the boiler outlet. In addition, the thermal inertia of the double-reheat boiler will increase as the boiler load decreases. The simulated dynamic characteristics of the double-reheat coal-fired boiler with triple-rear passes can provide the basis for further optimization of the unit operation control strategies.
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基本信息:
DOI：10.19666/j.rlfd.202506007
中图分类号:TM621.2
引用信息:
[1]乔永强,严俊杰,刘明,等.660 MW超超临界二次再热尾部三烟道燃煤锅炉动态特性[J].热力发电,2026,55(03):6-18.DOI:10.19666/j.rlfd.202506007.
基金信息:
陕西省重点研发计划项目资助（2023GXLH-002）~~
2026-03-18
2026-03-18
2026-03-18