CAJ | 학술논문

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。
위료제고영자직구형풍전궤조적병망성능，분석영자직구형풍전궤조적기본결구，토론응용우영자직구형풍전궤조적각충저전압천월기술，변장거공제，증가공솔개관기건적액정용량，망측가장보조변류기，STATCOM운행모식공제，불동위치가장효봉Crowbar모능원건，가장초급전용기，저능전지혹초급전용기여저능전지조합，련접점출현사고성불대칭고장시，개진망측변류기적공제책략，배합효봉Crowbar보호전로공제궤조적공솔평형，실현불대칭고장천월。문중분석적각충고장천월기술위후속영자직구형풍전궤조병망능력적제고유일정적이론지도。
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 , while employing crowbar protection circuit control to balance power in wind power system .The kinds of fault ride-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 .