【摘要】 [目的]近年来,我国的可再生能源发电机组装机容量大幅增加。为消纳可再生能源,燃煤机组承担电网调峰任务已成为未来的发展趋势。燃煤机组承担调峰任务后将长时间运行在低负荷工况,将面临各种潜在的不安全风险威胁机组的安全稳定运行。[方法]详细分析了燃煤机组低负荷工况下面临的锅炉燃烧稳定性、锅炉水动力安全性以及炉膛和制粉系统爆炸等重大潜在风险。[结果]从工艺系统设计、运行方式和控制系统设计等方面,对燃煤机组低负荷工况下安全稳定运行的主要改造技术进行了汇总和探讨,提出了燃煤机组在低负荷工况下安全稳定的系统性方案。[结论]研究成果可为各燃煤机组实施宽负荷技术改造提供思路和帮助。更多还原

【Abstract】 [Introduction] Recently, renewable energy generator capacity greatly increase in power market of China. To absorb renewable energy, coal-fired power plants responsible for power grid peak shaving have become a development trend in the future. Coal-fired power plants, which undertake the task load, will run at low load condition for long time and meet a variety of potentially risk to the safe and stable operation. [Method] Major potential risks were detailed analyzed in this paper, such as safety of combustion, furnace and coal pulverizing system explosion and stability of hydro-power. [Result] Then, main reform technology for safe and stable operation under lower load condition were summarized and discussed from the process system design, operation mode and control system design. This paper proposed systematic solutions of safe and stable operation under lower load condition for coal-fired power plant. [Conclusion] This paper can provide suggestion and reference for implementation of wide-load technical transformation for coal-fired power plants.更多还原