基于分轴燃气轮机发电的混合动力系统建模与分析  

Modeling and performance analysis of a twin-shaft microturbinebased power generation system

作　　者：李鸿扬 温旭辉[1,2] 王又珑 LI Hong-yang;WEN Xu-hui;WANG You-long(Key Laboratory of Power Electronics and Electric Drive,Institute of Electrical Engineering,Chinese Academy of Sciences,Beijing 100190,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院电力电子与电气驱动重点实验室,中国科学院电工研究所,北京100190 [2]中国科学院大学,北京100049

出　　处：《电工电能新技术》2021年第2期50-57,共8页Advanced Technology of Electrical Engineering and Energy

基　　金：中国科学院重点部署项目(KGFZD-135-16-007-2)。

摘　　要：在由燃气轮机、发电机及其控制器和锂电池组成的混合动力系统中,有着多种不同的暂态时间尺度存在。在进行仿真时,分析机电耦合系统中大时间尺度组件的动态过程要求执行长周期仿真,而分析小时间尺度组件的暂态特性要求极小的仿真步长,这会导致仿真时间大幅延长,仿真资源需求大量增加。本文提出并改进了分轴燃气轮机的简化数学模型及通用的电压源型整流器(VSR)数学模型,该模型能够模拟大负载扰动对燃气轮机转速及母线电压的影响,对电压源型逆变器的容错系统的仿真也有一定的参考价值。本文在MATLAB/Simulink中对比了该模型的仿真结果与Simpowersystem模块的仿真结果,验证了建模的有效性,并与分轴燃气轮机发电的实验数据进行了对比,以验证本文建模方法的准确性。In a hybrid power system consisting of a micro-turbine,a generator and its controller,and a lithium battery,there are many different transient time scales.When performing simulation,analyzing the dynamic process of large time-scale components in electromechanical coupling systems requires long-period simulations,and analyzing the transient characteristics of small time-scale components requires extremely small simulation step sizes,which will lead to a significant increase in simulation time and simulation resources.The demand for resources has increased significantly.This paper proposes and improves a simplified mathematical model of a split-shaft gas turbine and a general-purpose voltage source rectifier(VSR)mathematical model.This model can simulate the effects of gas turbine generator sets on the gas turbine speed and the bus voltage during rectifier PWM pulses and large load disturbances.The simulation of the fault-tolerant system of the voltage source inverter also has certain reference value.In this paper,the simulation results of this model are compared with the simulation results of Simpowersystem module in MATLAB/Simulink,the validity of the model is verified,and the experimental data of off-axis gas turbine power generation are compared to verify the accuracy of the modeling method in this paper.

关 键 词：燃气轮机 混合动力系统 SFG 参数辨识 PWM整流器 

分 类 号：TM921[电气工程—电力电子与电力传动]