双馈风机离线仿真与实时仿真的对比分析  

Comparison of Real-Time Simulation and Off-Line Simulation for DFIG

作　　者：李鹏程 欧家祥 张彦兵[2] 彭志炜[2] 

机构地区：[1]贵州电力试验研究院,贵州贵阳550000 [2]贵州大学电气工程学院,贵州贵阳550025

出　　处：《计算机仿真》2015年第11期146-150,共5页Computer Simulation

基　　金：国家自然科学基金项目(51267003);贵州电网公司科技项目(2013)

摘　　要：双馈风机系统含有电力电子变换器,对其仿真需要微秒级的仿真步长。在微秒级步长条件下,双馈风机实时仿真结果的可信度受到质疑。为了客观评价双馈风机实时仿真的可信度,采用与离线仿真进行对比分析。首先,给出了包括风力机和发电机的双馈风电机组动态数学模型;然后,对比实时仿真和离线仿真分别采用的求解算法;最后,选取加拿大RTDS公司的实时仿真工具和基于MATLAB/Simulink的离线仿真工具作为两个比较对象,用两种仿真工具分别建立了双馈风机的仿真模型,并对风速波动的慢动态仿真和电网短路的快动态仿真,提取关键变量的波形进行对比分析。研究结果表明,在慢动态下实时仿真和离线仿真具有良好的一致性,在快动态下,两种仿真结果存在一定差异,但变化趋势仍然一致。For doubly fed induction generator （DFIG） employed power electronics device, its dynamic simulation step must run with micro-second level. The simulation of doubly fed wind turbine system is an important link in related research. The mathematical model of the DFIG is a complex multi variable system. An accurate simulation result for a complex DFIG mode is very important for the study of DFIG. A detailed DFIG system is simulated and analyzed for the real-time simulator RTDS and the off-time simulator through Matlab/Simulink. Simulation results show that, at slow dynamic response, the two different simulators can obtain the same results ; while at fast dynamic response, they have difference results, but have same variation trendency.

关 键 词：双馈风机 实时仿真 实时数字仿真仪 离线仿真 

分 类 号：TM315[电气工程—电机]