永磁直驱型风电机组两类故障的穿越技术  

Two Kinds of Fault Ride-Through Technology of PMSG Direct-Driven Wind Energy Generator

作　　者：李玉忍[1] 张军利[1] 梁波[1] 牟海涛[1] 张文娟[2] 付龙飞[1] 

机构地区：[1]西北工业大学自动化学院,陕西西安710072 [2]宝鸡文理学院电子电气工程系,陕西宝鸡721016

出　　处：《西北工业大学学报》2013年第4期639-646,共8页Journal of Northwestern Polytechnical University

基　　金：国家自然科学基金(51207002);陕西省科技厅计划项目(2011K09-35);陕西省教育厅计划项目(2013JK1022);宝鸡文理学院计划项目(ZK12036)资助

摘　　要：为了提高永磁直驱型风电机组的并网性能,分析永磁直驱型风电机组的基本结构,讨论应用于永磁直驱型风电机组的各种低电压穿越技术,变桨距控制,增加功率开关器件的额定容量,网侧加装辅助变流器,STATCOM运行模式控制,不同位置加装撬棒Crowbar耗能元件,加装超级电容器,储能电池或超级电容器与储能电池组合,连接点出现事故性不对称故障时,改进网侧变流器的控制策略,配合撬棒Crowbar保护电路控制机组的功率平衡,实现不对称故障穿越。文中分析的各种故障穿越技术为后续永磁直驱型风电机组并网能力的提高有一定的理论指导。In order to improve the grid-connected power quality of direct-driven wind power system with Permanent Magnet Synchronous Generator （PMSG）, the basic structure units of direct-driven wind power system with PMSG were introduced. Many kinds of low voltage ride through technology employed in direct-driven wind power system with PMSG were discussed, such as variable pitch angle control, increasing the rated capacity of power switch de- vices, equipping with auxiliary inverter on the net side, STATCOM operation mode control, adding crowbar dissipa- tive element in different positions, adding super capacitor, adding storage battery or adding super capacitor and storage battery et al. As accidental asymmetric fault appeared at Common Connection Point （ CCP）, the control strategies of network side converter were improved to realize asymmetric fault ride-through protection circuit control to balance power in wind power system. The kinds of fault ride- , while employing crowbar through technology recom- mended provide some theoretical help for the improvement of the grid-connected power quality of direct-driven wind power system with PMSG.

关 键 词：直驱型风电机组 故障穿越 低电压穿越 不对称故障 撬棒 

分 类 号：TH614[机械工程—机械制造及自动化]