摘要
为了解决风机的低电压穿越问题,使其很好地渡过电压故障和电压恢复时刻,采用基于直流电压-有功功率控制策略的多端系统,接入风力发电系统,在该控制策略的协调控制下,系统有功功率能够自动匹配,即使交流电网发生电压跌落时,风力发电机所发的功率仍然能够输送出去。在Mtalab下搭建接入风电的四端系统,在整流站、逆变站和主导站所连电网分别发生电压跌落时,风力发电机能够继续平稳工作。仿真结果表明,多端系统是解决风力发电机低压穿越的问题最有效途径之一。
In order to solve the low voltage ride through （LVRT） problems of wind generator and ensure that the wind farm can maintain stable operation during voltage faults and voltage recovery, the multi-terminal VSC HVDC system connected with wind power generation system is designed via the DC voltage-active power control strategy. The active power can automatically match under the coordination control. The wind power generator can dispatch the power when voltage sags occurs in AC side. The four-terminal system is designed by Matlab, and the wind generator can work nor- mally when the voltage sags occurs respectively in AC side of convertor station. Simulation verifies that the multi-termi- nal VSC HVDC system is one of the most effective ways for solving the LVRT of wind turbine.
出处
《电力系统及其自动化学报》
CSCD
北大核心
2015年第9期91-96,共6页
Proceedings of the CSU-EPSA
