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在高压直流（HVDC）系统直流侧实现性能优良的有源直流滤波器（ADF）抑制谐波的关键问题之一是ADF的控制器设计。但是，对于超长距离架空线路的HVDC系统，ADF的控制器难以按常规方法设计。针对这一问题，提出了ADF的自校正前馈控制算法及其控制策略，该控制策略不仅能克服ADF对象模型的不确定性及气候变化对ADF控制性能的影响，而且能根据HVDC系统不同的运行方式自动调整控制模型及决策器参数。给出了以葛─南（GZB─NQ）HVDC线路为对象的ADF补偿效果仿真研究，证实所提的ADF控制策略是可行的。
One of the key issues for implementing good performance active-dc filter (ADF) harmonic suppression on the DC side of a High Voltage Direct Current (HVDC) system is the ADF controller design. However, for HVDC systems over long haul overhead lines, ADF’s controllers are difficult to design in a conventional manner. To solve this problem, this paper proposes a self-tuning feed-forward control algorithm for ADF and its control strategy. This control strategy can not only overcome the uncertainty of ADF object model and the impact of climate change on the ADF control performance, but also can be based on different HVDC system The operation mode automatically adjusts the control model and the decision maker’s parameters. The simulation study on the ADF compensation effect for the GZB-NQ HVDC transmission line is given, which proves that the proposed ADF control strategy is feasible.