基于功率前馈的燃气轮机可转导叶角度控制规律研究  

Research on Angle Control Law of Gas Turbine IGV based on Power Feedforward

作　　者：闫旭 赫英辉 刘瑞 付正 YAN Xu;HE Ying-hui;LIU Rui;FU Zheng(No.703 Research Institute of CSSC,Harbin,China,Post Code:150078)

机构地区：[1]中国船舶集团有限公司第七〇三研究所,黑龙江哈尔滨150078

出　　处：《热能动力工程》2022年第4期9-15,共7页Journal of Engineering for Thermal Energy and Power

摘　　要：针对某型发电燃气轮机在负载突变过程中可转导叶角度与压气机转速互相耦合、控制失稳的问题,提出了“功率前馈”控制策略——即根据负载功率对可转导叶角度进行调整。首先,通过粒子群寻优算法,将压气机喘振裕度作为目标,对不同工况下的导叶角度进行寻优匹配;其次,采用“功率前馈”对燃气轮机突增负荷和甩负荷过程中的导叶角度进行调节;最后,以船用发电型间冷燃气轮机为研究对象,建立三转子燃气轮机整机模型,针对突变工况过程可转导叶角度的控制规律开展研究。结果表明:采用“功率前馈”控制模式,在突增负荷过程中,动力涡轮转速超调量减小11%,高压涡轮进口温度降低了3%;在甩负荷过程中动力涡轮转速超调量减少10%,高压涡轮进口温度超调量降低11.9%,低压压气机最小喘振裕度由0.87%提高至9.1%。In order to solve the problems of the intercoupling and the control instability of the angle of the inlet guide vane(IGV)and the compressor speed of a certain type of power generation gas turbine in the process of abrupt load change,the"power feedforward"control strategy is proposed,and that is,the angle of the inlet guide vane is adjusted according to the load power.Firstly,by using the particle swarm optimization algorithm,the compressor surge margin is taken as the target,and the guide vane angles under different working conditions are optimized and matched.Secondly,the"power feedforward"is used to adjust the guide vane angle in the process of a sudden load increase and load shedding of gas turbines.Finally,taking marine power generation intercooled gas turbine as the research object,a whole model of the three-rotor gas turbine was established,and the control law of the guide vane angle was studied in the mutation process.The results show that the overshoot of the power turbine speed is reduced by 11%and the inlet temperature of the high pressure turbine is reduced by 3%during a sudden load increase by the"power feedforward"control mode.During load shedding,the overshoot of the power turbine speed is reduced by 10%,the overshoot of the high-pressure turbine inlet temperature is reduced by 11.9%,and the minimum surge margin of the low-pressure compressor is increased from 0.87%to 9.1%.

关 键 词：船用燃气轮机 间冷循环 可转导叶 控制规律 

分 类 号：TK474.11[动力工程及工程热物理—动力机械及工程]