摘要
为提高永磁直驱型风力发电机组的高电压穿越能力,在研究电网电压骤升下风力发电机组运行特性基础上提出一种基于双模控制的永磁直驱型风力发电机组高电压穿越控制策略。以电网电压骤升幅度及直流母线电压的升高程度为依据,利用选择器进行网侧变流器控制模式的转换,从而使直驱型风力发电机组具备高电压穿越能力。基于PSCAD仿真平台的仿真结果及应用结果表明,该控制策略不仅可以保证直驱型风力发电机组在电网电压骤升期间不脱网连续运行,还可以有效提高风力发电机组的无功补偿能力,有利于电网的安全稳定运行。
To improve the ability of the high voltage ride through for wind turbines with the direct-driven permanent magnet synchronous generator,a kind of control strategy of high voltage ride through based on dual-modes control is proposed according to research on the operational characteristics of the wind generators.According to the surge swelling of the grid voltage and the increasing of DC bus voltage,the control mode of converter on the grid side is converted via the mode selector,which makes direct-driven wind generators have such ability as the high voltage ride through.The simulation results by using PSCAD simulation platform and the application results show that this control strategy can not only ensure the wind turbines with direct-driven permanent magnet synchronous generator working continuously during grid voltage swells,but also can effectively improve the reactive power compensation capabilities of wind generators,which benefit for the operation security and stability of the grid.
出处
《现代电力》
北大核心
2015年第3期13-18,共6页
Modern Electric Power
基金
国家电网公司项目
关键词
高电压穿越
永磁直驱型风力发电机组
双模控制
PSCAD
high voltage ride through the direct-driven permanent magnet synchronous generator wind turbines dualmodes control PSCAD
