并网型风电机组软并网控制研究.pdf

19 当代化工研究 技术应用与研究 2016·06 并网型风电机组软并网控制研究 赵文武 国华(呼伦贝尔)新能源有限公司内蒙古021400) 要:风力发电技术一直是一个比较热门的课题。因异步发电机的风电机组对并网要求低,拉制简单,并网运行稳定受到了研究人员更多 的青睐。但是当异步电机直接并入电网时,冲击电流高达其额定电流的6至8倍,甚至10倍以上,这必然会给电机造成严重冲击,甚至可能影响 到其他联网机组的正常运行。普遍采用软并网控制系统来解决这一问题。本文将使用目前被广泛采用的结构简单性能可靠的定桨距风力发 电机组,从软并网系统结构及主电路结构分析入手,对并网型风电机组中的发电机的软切过程进行仿真分析,展开对并网型风电机组软并 网控制系统的研究,并总结给出并网型风电机组软并网系统适用的条件和控制方法 关键词:冲击电流;软并网控制系统;主电路;可控硅触发;仿真 分类号:T文献标识石 Research on SOFT CUT-IN Control of Grid-connected Wind Turbine Generator Zhao Wenwu ( Guohua(HulunBuir )New Energy co .,LTD ,Mongolia ,021400 ) 1bstract :Wind power generation technology has always been a popular topic .Because the wind turbine generator of asynchronous generator has the characteristics of few requirement for grid connection ,simple control and stable grid connection operation ,it bees more popular amon g researchers .But when the asynchronous motor is merged directly into power grid ,and the surge current up to six to eight times of the rated cu rrent ,even more than 10 times ,this will inevitably causes serious impact to lectrical machine ,even affects the normal operation of other grid - connected unit .SOFT CUT-IN control system is widely used to solve this problem...