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中文摘要：
随着风力发电的电网渗透率的增加，风电系统与电网之间的相互影响也越来越大。风电系统输出功率的波动性和间歇性对电网的电能质量及其稳定性将产生较大影响；与此同时，电网故障也会给风电系统带来一系列的暂态过程，甚至会危及到风电系统的安全运行。该文基于超级电容器和蓄电池在技术性能上具有较强的互补性以及并网永磁直驱风力发电系统的运行特点，提出一种综合控制策略，在使风电系统输出较为平滑的功率的同时，还具有较强的低电压穿越能力，使风电系统基本不受电网故障的影响。仿真结果证明了所提控制策略的正确性和有效性。
英文摘要：
The increasing wind power penetration poses significant technical problems for the electric power systems. The intermittent and fluctuant output power of wind generators has a great impact on the power quality and power system stability. On the other hand, the grid-side faults influence the normal operation of wind power systems. In this paper, an integrated control strategy was proposed based on the characteristics of directly-driven wind turbines with permanent magnet synchronous generators （D-PMSG）. The D-PMSG was ineorporated with the hybrid battery/ultra-capacitor energy storage system, which can smooth the output power, enhance the low voltage ride-through （LVRT） capability of the wind generation system and take the advantage of the battery/ultra-capacitor complementary technologies, so as to achieve better power and energy performances. The effectiveness of the control strategy was verified with the numerical simulations.
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