提出了一种兼具无功功率补偿、谐波电流滤除和谐波谐振抑制的串联谐振注入式有源电力滤波器拓扑结构,并将其成功应用于实际工程。其基本思想是:只由无源部分补偿无功功率,有源部分和无源部分共同抑制谐波。详细介绍了该系统的滤波原理和控制系统结构。该装置目前已挂网运行,现场运行结果表明该装置性能优越、可靠性高。 A series resonant injection active power filter topology with reactive power compensation, harmonic current filtering and harmonic resonance suppression is proposed and successfully applied to practical engineering. The basic idea is that reactive power is only compensated by the passive part, and the active part and the passive part jointly suppress the harmonics. The filter principle and control system structure of the system are introduced in detail. The device is currently hanging net operation, field operation results show that the device superior performance, high reliability.