兆瓦级变速恒频风电机组变速控制策略的研究

VARYING SPEED CONTROL STRATEGY OF MW VARIABLE SPEED CONSTANT FREQUENCY WIND TURBINE

针对变速恒频风电机组的变速控制策略进行了研究,并以兆瓦级变速恒频风电机组为模型,对几种变速控制策略进行了仿真。在对仿真结果进行了讨论分析的基础上,结合大型变速恒频风电机组的整机特点和控制方法的可行性,该文采用了功率闭环的变速控制策略;最后在自主研发的1.5MW变速恒频风电机组控制系统及变流器样机上对变速运行的功率控制策略进行了大量实验和长期的现场试运行,验证了所提出的变速控制策略的可行性与实用性。

Based on the model of MW variable speed constant frequency wind turbine, three speed control methods, simulates corresponding characteristics of each method were analyzed and discussed. This paper adopts power control closedloop strategy to realize variable speed operating. A control system of MW variable speed constant frequency wind turbine was designed. And takes sufficient experiments and long-time preliminary operation at a real Wind Farm, which validates the feasibility and practicability of varying speed control strategies on MW variable speed constant frequency wind turbine.