王超,张宝瑞,刘铠瑞,樊海龙,刘斌,全向,王利民,车得福

• 1:内蒙古电力科学研究院
• 2:西安交通大学动力工程多相流国家重点实验室
• 3:内蒙古三峡蒙能能源有限公司

摘要(Abstract)：

为提升煤电机组灵活性，锅炉需具备良好的可控性和适应负荷快速变化的能力。锅炉灵活性与控制系统性能密切相关，而后者是基于动态特性设计的。为研究锅炉的动态特性，在Dymola平台中建立了某超临界660 MW机组直流锅炉的动态模型。结果表明：当锅炉入口参数发生扰动时，蒸汽温度的响应时间比蒸汽流量更长；当给水温度、给水量与燃料量分别阶跃增加5%时，主蒸汽温度分别变化10.2℃、–28.5℃和35.7℃；在锅炉的水煤配比调节过程中，给水量和燃料量变化时间不同会对主蒸汽温度产生不同的影响；当给水量比燃料量延迟约100 s作用时，主蒸汽温度在瞬态过程中的最大偏差相对于二者同时变化的情况减少了27.4℃；当变负荷幅度相同时，变负荷速率越大，主蒸汽参数的波动越剧烈，趋于稳定所需的时间越长。

关键词(KeyWords)： 动态特性;直流锅炉;水煤比;变负荷;灵活性

Abstract:

Keywords:

基金项目(Foundation): 内蒙古电力科学研究院科技项目（ZC-2021-01）~~

作者(Author): 王超,张宝瑞,刘铠瑞,樊海龙,刘斌,全向,王利民,车得福

DOI: 10.19666/j.rlfd.202304075

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