摘要
传统的风电机组高电压穿越方法大多采用直流母线加装卸荷装置,以热能形式消耗多余的能量,降低了发电机组效率,增加了机组散热。为解决该问题,以直驱风电机组高电压穿越为研究对象,提出一种基于超级电容器储能系统的高电压穿越方案。利用超级电容器快速充放电的特点,实现高电压故障中风电机组波动功率的控制;给出了超级电容储能装置详细方案,以及风电机组在高电压穿越期间有功功率、无功功率协调控制方法。仿真结果表明,超级电容储能系统能够更好地提升机组高电压穿越能力,并加速系统有功恢复。
DC bus equipped with unloading gear is often adopted for the traditional high voltage ride through（HVRT） of wind turbine generating units, which consumes extra power in the form of heat energy to reduce generator efficiency and increase unit heat dissipation. To deal with the problems, HVRT of direct-driven wind turbine generating units is investigated, and a HVRT scheme based on super capacitor energy storage system is proposed. Based on fast charging and discharging of super capacitor, fluctuating power of wind turbine generating units in the case of high voltage fault is controlled. A detailed scheme of super capacitor energy storage device and the coordination control strategies for active power and reactive power during HVRT.The simulation result shows that super capacitor energy storage system can improve HVRT and accelerate active power recovery.
作者
蒋永梅
张谦
金武杰
金晨星
徐宁
叶自强
JIANG Yongmei;ZHANG Qian;JIN Wujie;JIN Chenxing;XU Ning;YE Ziqiang(State Grid Zhoushan Power Supply Company,Zhoushan Zhejiang 316021,China)
出处
《浙江电力》
2018年第8期54-58,共5页
Zhejiang Electric Power
关键词
风电并网
超级电容储能系统
高电压穿越
直驱风电机组
wind power integration
super capacitor energy storage system
high voltage ride through
direct-driven wind turbine generating units
