瞬态变工况下电厂燃气轮机气路故障诊断方法研究  

Study on gas path fault diagnosis method for gas turbine in power plant under transient operating condition

作　　者：梁芒 应雨龙 赵素强 钟磊 郭佳晖 徐搏超 王新友 LIANG Mang;YING Yulong;ZHAO Suqiang;ZHONG Lei;GUO Jiahui;XU Bochao;WANG Xinyou(Zhejiang Datang International Shaoxing Jiangbin Thermal Power Co.,Ltd.,Shaoxing 312366,China;School of Energy and Mechanical Engineering,Shanghai Electric Power University,Shanghai 200090,China;Steam Turbine Technology Research Institute of East China Electric Power Test and Research Institute,East China Electric Power Research Institute,Datang Group Science and Technology Research Institute Co.,Ltd.,Hefei 230031,China)

机构地区：[1]浙江大唐国际绍兴江滨热电有限责任公司,浙江绍兴312366 [2]上海电力大学能源与机械工程学院,上海200090 [3]大唐集团科学技术研究总院有限公司华东电力试验研究院汽轮机技术研究所,安徽合肥230031

出　　处：《热力发电》2023年第5期29-36,共8页Thermal Power Generation

基　　金：国家自然科学基金面上项目(62076160,51806135)。

摘　　要：为避免失修和过修,提高电厂燃气轮机可靠性和可用性,降低运维成本,确保其安全稳定、绿色高效运行,提出了一种适用于瞬态变工况且包含可变几何压气机的电厂燃气轮机气路故障诊断方法。推导了压气机IGV开度变化对压气机流量特性线和效率特性线的影响数学关系式,建立了以燃气轮机性能分析与气路故障诊断为目的高精度燃气轮机热力模型,并提出了适用于瞬态变工况且包含可变几何的电厂燃气轮机气路故障诊断策略。通过现场实际机组运行测试,验证了所提出的方法具有良好的诊断准确性与实时性,实现了在瞬态变工况下的故障辨识。In order to avoid disrepair and overrepair,improve the reliability and availability of gas turbine,reduce operation and maintenance cost,and ensure its safe,stable,green and efficient operation,a novel approach is proposed for fault diagnosis of gas turbine in power plants under transient operating condition with variable geometry compressor.The mathematical relationship of the influence of the compressor inlet guide vane position on compressor flow and efficiency characteristics is deduced.A high-precision thermodynamic model for the purpose of performance analysis and gas-path fault diagnosis is established.Moreover,the gas path fault diagnosis strategy of power plant gas turbine,which is suitable for transient and variable conditions and includes variable geometry,is proposed.Through actual operation test,it is verified that the proposed method has high diagnostic accuracy and good real-time performance,and the fault identification under transient and variable conditions is realized.

关 键 词：燃气轮机 瞬态变工况 热力建模 可变几何压气机 气路诊断 

分 类 号：TM621[电气工程—电力系统及自动化]