摘要
软并网是目前大型异步风力发电机组并网的关键控制技术。利用复数分量法对用于风力发电的异步发电机并网过渡过程进行了分析。利用晶闸管进行软并网的原理，并利用Matlab／Simulink平台，建立了电流PI单闭环控制模型，并验证了该控制方案的正确性。使并网电流控制在额定电流的1．25～2倍以内，对实际软硬件系统的设计具有一定的指导意义。
Soft cut-in technology is the key technology for wind turbine asynchronous generators connecting to power grid. The paper analyzes the transition process of soft cut-in of wind turbines. And the principle of soft cut-in system using thyristor is analyzed while its simulation platform is obtained with Matlab/Simulink. A single close loop PI control scheme is developed with which the cut-in current can be limited in 1. 25-2 times of rated current. The proposed control scheme has advantages in guiding the software and hardware design, and its validity is proved by the simulation results.
出处
《电力系统及其自动化学报》
CSCD
北大核心
2007年第4期80-83,共4页
Proceedings of the CSU-EPSA
关键词
复数分量
软并网
异步发电机
仿真
complex component
soft cut-in
asynchronous generator
simulation
