侯国莲,黄婷,郭志强,余琦,江浩,李勇,周振华,安振一

• 1:华北电力大学控制与计算机工程学院
• 2:西安热工研究院有限公司
• 3:国电电力大连庄河发电有限责任公司

摘要(Abstract)：

随着高比例可再生能源电网负荷波动问题的日益突出，提高大型燃煤机组在全工况下的快速变负荷能力已成为维护电力系统安全稳定运行的迫切需求。为此，提出了一种与高加旁路改造技术相结合的负荷快速调控策略以实现灵活性需求下的超临界机组全工况负荷快速爬坡。首先，为机组的高压回热系统增加一条高加小旁路灵活改变从汽轮机抽取的高温高压蒸汽量，以加快直流锅炉的能量供给速率；其次，充分考虑滑压运行模式下机炉可承受的主蒸汽压力、温度的上下限及变化速率，同时对输出功率与主蒸汽压力进行解耦并设计一套适应机组高爬坡速率的负荷快速调控方案；最后，在某燃煤600 MW机组上进行试验验证。研究结果表明，负荷爬坡速率3%Pe/min下机组能够实现全工况范围内的负荷快速响应，且主蒸汽压力、汽轮机总调节阀开度等参数保持平稳变化，并通过仿真验证了机组在负荷爬坡速率5%Pe/min下的负荷调节能力，充分证实了所设计负荷快速调控策略的有效性。

关键词(KeyWords)： 燃煤机组;负荷快速爬坡;全工况;灵活运行;改进协调控制策略

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划项目（2019YFB1505400）~~

作者(Author): 侯国莲,黄婷,郭志强,余琦,江浩,李勇,周振华,安振一

DOI: 10.19666/j.rlfd.202405106

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