With the rate of the variable speed wind turbines connected to the grid increasing, it will bring adverse influence on frequency control of the power system.
随着变速风电机组容量在电网中的所占比例的不断提高，其接入电网将给电力系统的频率控制带来不利影响。
This paper Outlines axial_flow fan made in Germany TLT Company It is mostly analyzes that the axial_flow fan's wind wheel Angle closed_loop control and wind rate closed_loop control system.
介绍了德国TLT公司生产的轴流式风机，重点对该风机的风叶角度闭环控制和风量闭环控制系统的原理进行了分析。
This paper Outlines axial_flow fan made in Germany TLT Company It is mostly analyzes that the axial_flow fan's wind wheel Angle closed_loop control and wind rate closed_loop control system.
介绍了德国TLT公司生产的轴流式风机，重点对该风机的风叶角度闭环控制和风量闭环控制系统的原理进行了分析。
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