作为防止燃气轮机喘振的有效手段之一，可调静叶技术的应用能够提升压气机在非设计工况下的效率和运行范围，从而提高燃气轮机变工况下的经济性和稳定性。以某型船用三轴燃气轮机为研究对象，建立压气机一维性能分析模型与燃气轮机零维仿真模型耦合的变维度燃气轮机仿真模型，以经济性和稳定性为优化目标，通过多目标遗传算法对低压压气机多级可调静叶进行优化匹配。结果表明：优化后的可调静叶方案能提高压气机的喘振裕度并降低耗油率；静叶处于不同优化角度方案时，不同工况下压比-流量共同工作线上压比最高提升2.17%，效率-流量共同工作线上效率最高提升4.34%，折合转速提高3%~4%。

As one of the effective means for gas turbines to prevent surge,the application of variable stator vanes technology can improve the efficiency and operating range of compressor under nondesign conditions,thereby improving the economy and stability of gas turbine under different operating conditions.This paper takes a marine threespool gas turbine as the research object,establishes a multifidelity gas turbine simulation model that couples a compressor onefidelity performance analysis model and a gas turbine zerofidelity simulation model.The optimization goals are to improve economy and stability,and a multiobjective genetic algorithm is adopted.The optimization matching study of the multistage variable stator vanes of lowpressure compressor is carried out,and the effectiveness of the optimization matching method is verified.The results show that the optimized variable stator vanes scheme can improve the surge margin of lowpressure compressor and reduce the fuel consumption of whole machine.When the vanes are in different optimization angles,the pressure ratio of the common working line with pressure ratioflow is increased by 2.17% in maximum,efficiencyflow coworking line has the highest efficiency increase of 4.34%,and the equivalent speed is increased by 3%-4%.

TK474.8

船舶与海洋工程动力系统国家工程实验室-海洋工程燃气轮机实验室；国家科技重大专项（2017-Ⅰ-0011-0012)；某型燃气轮机发电机组研制；黑龙江省“百千万”工程科技重大专项（2019ZX03A03）