摘要
为了分析考虑水轮机调节系统影响的双馈水轮发电机系统的运行特性,首先基于双馈发电机和水轮机导叶开度的模型,应用小信号分析方法建立了双馈水轮发电机系统的数学模型;其次,研究了基于电压空间矢量脉宽调制(VSVPWM)控制策略的发电机系统的谐波特性。为了验证文中所提出的系统模型的正确性和可行性,采用Matlab/Simulink软件对双馈水轮发电机系统的稳态调节特性和暂态运行特性进行了研究。仿真结果表明双馈水轮发电机系统可实现定子有功功率和无功功率的独立稳态调节,在暂态运行特性中显示了很好的稳定性和动态性能。
The aim is to analyze the operation characteristics for hydrogeneration system with doubly fed generator (DFG) considering the effect of hydroturbine governing system. Based on the models of DFG and hydroturbine water valve, the mathematical models of the hydrogeneration system with DFG were established by using the small signal error method. Furthermore, the system harmonics performances of this hydrogenerator system were studied by using the voltage space vector pulse width modulation (VSVPWM) control. To testify the feasibility and correctness of the proposed models, the digital simulation of the steady state regulation and transient operation characteristics for hydrogenerator system with DFG was studied by using Matlab/Simulink. The simulation results show that the active and reactive powers are controlled independently, and this hydrogenerator system appears good in stability and dynamic performances.
出处
《系统仿真学报》
EI
CAS
CSCD
北大核心
2006年第7期1736-1741,共6页
Journal of System Simulation