为系统研究某型20 MW级三轴燃气轮机发电机组动态特性，在热力学循环分析的基础上，建立燃气轮机发电机组的动态特性数学模型，基于MATLAB/SIMULINK仿真平台建立其动态仿真模型，针对未来舰船常用的大负荷突卸(12 MW突卸至2 MW)时的动态过程进行了仿真，对其动态仿真和试验进行了对比分析。结果表明：仿真与试验具有较好的吻合性；针对大负荷突卸过程中存在的积分饱和问题，提出采用具有抗积分饱和的控制方法，可有效降低机组稳定时间，提高机组的动态响应，为后续机组控制方法调整提供有力的技术支撑。

For systematic study of the dynamic characteristics of a 20 MW triaxial gas turbine generator set, according to the thermodynamic cycle analysis, we establish a mathematical model of the dynamic characteristics of gas turbine generators on MATLAB/Simulink platform. In this paper, the dynamic process of suddenly unloading at heavy load(Unload 12 MW to 2 MW) commonly used in future warships is simulated, and its dynamic simulation and test are compared and analyzed. The results show that the simulation is in good agreement with the test. In view of the integral saturation problem existing in the process of suddenly unloading at heavy load, we propose a control method with antiintegral saturation, which can effectively reduce the unit stability time, improve the dynamic response of the unit, and provide strong technical support for the subsequent adjustment of the control method of the unit.

TK611.24