中文摘要：

在简单介绍有源滤波器结构与原理的基础上，针对目前应用最为广泛的三角载波、滞环比较两种电流跟踪控制方式的原理与效果，进行了深入地分析与仿真验证。然后结合具体工况，分析讨论了某地变电站实际电能质量特点，在此基础上设计提出了几种治理与改善方案，综合比较选择采用最优的混合型有源滤波装置方案；最后利用Simulink仿真软件搭建了模拟现场实际工况的统一电气仿真平台，通过仿真得到的波形与频谱分析结果，对该方案的有效性进行了验证。

英文摘要：

With the rapid development of power semiconductor technology, varieties of non-linear devices are put into use in power system, which caused serious power quality problems and attracted more and more attentions; at the same time, the FACTS device active power filter （APF） has now become an integrated and efficient device to suppress harmonics and compensate reactive power, and the performance is quite concerned with the efficiency of current control. First the advantage and efficiency of triangle-wave and hysteresis comparison methods were deeply analyzed and simulated based on brief introduction of the structure and working principle of APF in this paper; then the characteristics of power quality that is combined with practical ease of one transformer substation were discussed based on which several improving plans were proposed and the optimal hybrid active filter device plan was adopted after comprehensive comparison; finally the main circuit and control part of the system in accordance with practical case was established by using Simulink software as the platform of simulation, the efficiency were further demonstrated by the waveforms and spectrum analysis results.