双馈风电机组的低电压穿越影响因素分析  

Analysis on low voltage ride through influencing factors of doubly-fed wind turbines

作　　者：邵锟[1] 李培强[1] 欧阳惠[1] 朱琳[1] 刘卫健[1] 

机构地区：[1]湖南大学电气与信息工程学院,湖南长沙410082

出　　处：《电源技术》2016年第3期684-686,699,共4页Chinese Journal of Power Sources

基　　金：国家自然科学基金资助项目(51277055)

摘　　要：随着风力发电量的急剧增加,近年对DFIG低电压穿越保护方案的研究文献甚多,对系统自身低电压穿越能力的影响因素报道却很少。通过DFIG的数学模型,在Matlab/Simulink中建立并网仿真模型,通过仿真探讨了网侧变频器最大限值电流和控制网测变频器不同无功补偿时刻对DFIG低电压穿越能力影响,仿真结果表明合理的限流值能稳定直流侧母线电压,而及时控制网侧变频器进行无功补偿则能减少DFIG系统的暂态振荡,这两方面都直接或间接地改善了系统的LVRT能力。With the dramatic increase of the proportion of wind power in the power system, in recent years much of literature researchs about the protection schemes of LVRT of DFIG were made, less on the factors of the system itself. Through the mathematical model of DFIG, the grid-model was built up in Matlab/simulink. Then the effect factors of DFIG low voltage ride-through ability were simulated, and the influence of grid-side converter maximum current to the DC bus voltage and different reactive power compensation time to DFIG system were disscussed.Finally the conclusion of reasonable limiting value was obtained and the LVRT ability of system itself could be improved by compensation time.

关 键 词：风力发电 低电压穿越 网侧变频器 无功补偿 直流母线电压 

分 类 号：TM743[电气工程—电力系统及自动化]