考虑电网调度的风电场直流系统控制方式研究

本文提出了一种考虑电网的有功调度指令时，风电场多端直流系统的运行与控制方法。正常情况下，发电侧变流器控制发电机工作在最大风能跟踪模式，向直流系统输送尽可能多的有功，网侧变流器维持直流电压。若电网对风电场的有功出力有限制，则网侧变流器工作于定有功模式，而发电侧变流器控制直流电压。仿真表明该方法是有效的。最后介绍了风力发电实验平台的设计与实现。
Abstract: This paper proposes a dispatch control strategy of the multi-terminal DC (MTDC) system consisting of several voltage source converters (VSC) in wind farms. The wind generator operates in MPPT mode and the grid-side converter controls the dc voltage in normal condition. When the active power is limited by system operator, the grid-side converter operates in constant power mode, and the generator-side converter operates in constant voltage mode to regulate the dc bus voltage to its threshold. The simulation results illustrate the effectiveness of the developed approach. Finally, the design and implement of a wind energy experimental platform is introduced in this paper.
关键词﹕风力发电；多端直流系统；有功调度；实验平台
Keywords: wind energy; multi-terminal DC system; active power dispatch; experimental platform