并网双馈风力发电实时仿真控制方案研究

Real-time Simulation of DFIG-based Wind Farm Connected to Power Grid

基于RT-LAB实时仿真平台设计了双馈异步电机并网发电的整体系统,给出了双变流器的矢量控制方案。应用解耦理论,分别对网侧和转子侧变流器采用电网电压定向和定子电压定向两种矢量控制方案。采用精确模型,在提高系统仿真可信度的同时改进了可移植性。实时仿真研究结果表明:精确模型的采用对系统整体控制效果的研究具有更高的精度及更好的移植性;给出的双变流器矢量控制方案具有良好的控制效果;实时算法快速精确,仿真平台优秀可靠,有效的缩短了研究工作的产业化过程。

An RT-LAB real-time simulation platform based system of doubly fed induction generator was designed. The control strategies of back-to-back converters were proposed. By using decoupling theory, the power system voltage oriented and stator voltage oriented vector control scheme were applied respective to the net-side and rotor-side converters. The creditability and transplantability were improved remarkably through the use of detailed model. The real-time simulation result shows that the adoption of detailed models dramatically improves the precision and the transplantability, and the proposed control schemes bring forth high performance. The platform is excellent, with its precise algorithm, the time takes from research work to products is dramatically shorten.