一种用于直驱型风力发电机的高电压穿越技术的研究  

Research on High Voltage Ride Through Technology of Permanent Magnet Direct Drive Wind Turbine

作　　者：潘莞奴 谢冬梅 PAN Wan-nu;XIE Dong-mei(Graduate Department,Shenyang Institute of Engineering,Shenyang 110136,Liaoning Province;School of Electric Power Engineering,Shenyang Institute of Engineering,Shenyang 110136,Liaoning Province)

机构地区：[1]沈阳工程学院研究生部,辽宁沈阳110136 [2]沈阳工程学院电力学院,辽宁沈阳110136

出　　处：《沈阳工程学院学报（自然科学版）》2020年第3期59-64,共6页Journal of Shenyang Institute of Engineering:Natural Science

摘　　要：近年来,由于风电装机容量的增大而导致电厂脱网事故频发。为了提高风电机组的并网性能,根据直驱型风力发电机的结构和运行原理,分析其高电压故障时的功率变化,在并网导则规定下,提出一种可以根据电压骤升大小降低直流侧电压的穿越技术方案,即在电压小幅度骤升时利用变流器控制策略补偿无功,若电压仍继续上升则在网侧并接静止无功补偿器,同时利用直流侧增设的双卸荷电路,协调降低电压幅值。最后运用Matlab/Simulink软件进行仿真验证。In recent years,the increase of installed capacity of wind power leads to wind power plants disconnect accidents from the grid frequently.In order to improve the grid connection performance of wind turbines,this paper analyzes the power change of direct drive wind turbines in high voltage fault according to the structure and operation principle of direct drive wind turbines.According to the grid connection guidelines,a crossing technical scheme that can reduce the DC side voltage according to the magnitude of voltage surge is proposed,that is to say,when the voltage rises in a small amplitude,the converter control strategy is used to compensate the reactive power.If the voltage continues to rise,the static reactive power compensator is connected in parallel at the grid side.At the same time,the double unloading circuit added at the DC side is used to coordinate the reduction of the voltage amplitude.Finally,the simulation is carried out by Matlab/Simulink software.

关 键 词：直驱型风力发电机 高电压穿越 双卸荷电路 仿真 

分 类 号：TM315[电气工程—电机]