600 MW亚临界机组长时间深度调峰燃烧稳定性研究  

Research on Combustion Stability of a 600 MW Subcritical Power Unit Under Long-Term Deep Peak Shaving

作　　者：贾志军 范伟 任少君 魏唐斌 JIA Zhijun;FAN Wei;REN Shaojun;WEI Tangbin(Inner Mongolia Technical College of Mechanics&Electrics,Huhhot 015501,Inner Mongolia Autonomous region,China;Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education(Southeast University),Nanjing 210096,Jiangsu Province,China;State Grid Beijing Electric Power Corporation,Xicheng District,Beijing 100031,China)

机构地区：[1]内蒙古机电职业技术学院,内蒙古自治区呼和浩特市015501 [2]能源热转换及其过程测控教育部重点实验室(东南大学),江苏省南京市210096 [3]国网北京市电力公司,北京市西城区100031

出　　处：《发电技术》2024年第2期216-225,共10页Power Generation Technology

基　　金：内蒙古自治区高等学校科学技术研究项目(NJZZ23067)。

摘　　要：火电机组深度调峰是新能源消纳和用能结构优化的重要技术手段。以某600 MW亚临界燃煤机组为研究对象,分别进行15%和20%额定负荷长时间运行试验,通过参数分析研究了不同参数对火检波动的影响。进一步提出了基于滑动窗口内火检、汽包水位和炉膛负压的波动特性分析方法,实现了炉膛燃烧稳定性判断。试验结果表明,在等离子稳燃和燃煤热值20 kJ/g左右准格尔煤的前提下,2套磨煤机可保证15%~20%额定负荷的长期燃烧稳定性。此外,通过相关性分析得出煤量变化速率、煤量分布和一次风量是影响火检波动的主要因素。研究结果可为同类型机组长时间极限深度调峰提供参考。Deep peak shaving of thermal power units is a crucial technique for integrating new energy sources and altering energy consumption patterns.A 600 MW sub-critical coal-fired unit was chosen as the subject of research,and longterm operation tests were conducted at 15% and 20% rated load respectively.The impact of different parameters on fire detection fluctuation was analyzed through parameter analysis.Additionally,a sliding window-based method for analyzing drum water level and furnace negative pressure wave characteristics was proposed for determining furnace combustion stability.The results of the tests indicate that with plasma combustion stabilization and a calorific value of approximately 20 kJ/g for Junger coal,two sets of coal mills can maintain long-term combustion stability at 15%-20%rated load for a 24-hour period.Furthermore,the analysis reveals that the coal volume change rate,coal volume distribution,and primary air volume are the primary factors influencing fire detection fluctuation.Overall,this study has provided valuable insights for implementing long-term,deep peak regulation of similar units.The research results can provide a reference for long-time limit depth peak regulation of the same type of units.

关 键 词：火电机组 深度调峰 火检波动 燃烧稳定性 相关性分析 

分 类 号：TK16[动力工程及工程热物理—热能工程]