随着国家坚强智能电网的发展，智能型电力电子设备及技术在智能电网中大量使用。由于电力电子器件具有非线性特性，其使用给智能电网带来了谐波污染等问题。并联型有源电力滤波器采用了应用广泛的谐波抑制和无功补偿技术，它能对智能电网中的谐波和无功进行较好地动态补偿。分析了并联型有源电力滤波器的补偿原理，利用包含直流侧电压环控制的ip-iq法进行智能电网指令电流的检测和定时滞环电流跟踪控制方法对并联型有源电力滤波器进行电流跟踪控制，使用Matlab/Simulink搭建仿真模型，并从不同的控制角进行实例仿真。仿真结果和快速傅里叶分析表明，对于非线性负载晶闸管的不同触发角，定时滞环电流跟踪控制都能有效地实时跟踪控制，仿真模型系统能够实时检测出系统中所含指令运算电流，并进行有效补偿，达到了理想的效果。

Along with the development of strong and smart grid, smart power electronic devices and technologies have been widely used in the smart grid. However, the nonlinear characteristics of power electronic devices brought to the harmonic pollution of smart grid. Shunt active power filter (SAPF) is widely used for the harmonic suppression and reactive power compensation, which has good dynamic compensation in the harmonic and reactive power in the smart grid. This paper analyzed the compensation principle of SAPF, used the ip-iq method including DC voltage loop control for the detection of smart grid command current and the definite-hysteresis current control method for the SAPF tracking control, as well as built the simulation model with Matlab/Simulink from different controlling angle. The simulation results and FFT analysis shows that definite-hysteresis current tracking control is effective for the real-time tracking control, the simulation model system can real-time detect the operation command contained in the current system, and do the effective compensation, which can achieve the ideal effect.