永磁同步直驱风力发电系统并网的仿真研究

Simulation Research on Wind Power D-PMSG System with Grid-connected Operation

风力发电技术是分布式发电技术的重要组成部分,而永磁同步直驱风力发电系统的应用日益广泛。但直驱风力发电机产生的电能存在着电压幅值频率随风速变化、功率不稳定等诸多问题。为解决该问题,基于永磁同步直驱风力发电系统各个部分的工作原理,采用现代电力电子技术结合先进的控制技术,分析并设计出适合于直驱风力发电系统的逆变装置。在此基础上,用PSCAD对永磁同步直驱风力发电系统建立仿真模型,并进行了风电并网对电网稳定性方面的仿真研究分析,并证明了该系统有较高的灵活性(即插即用)和抗干扰性,有较好的实用价值。

Wind power generation technology is an important distributed power generation technology,technology of directly driven wind turbine with permanent magnet synchronous generators has been applied widely.However,power energy generated by direct drive wind power generations exists problems on voltage amplitude and frequency variable with wind speed variance,power instability,etc.To deal with these problems and based on operational principle of various parts of the directly driven wind turbine with permanent magnet synchronous generators（D-PMSG）,this paper employs modern power electronic technique together with advanced control technology,which aims at dynamic analysis and design on inverter device suitable for directly driven wind turbine.This paper also uses PSCAD software to establish the simulation model of D-PMSG,and proceeds simulation analysis on the influence to grid stability when connected,which proves that the system has a good practical value with high flexibility and anti-jamming.