有源电力滤波器在电弧炉电气系统中的应用

Application of Active Power Filter in the System of Electric Arc Furnace

在分析抑制谐波常用方法的基础上,利用对称分量分解和滤波器提取基波分量来设计有源电力滤波器,采用先进的仿真软件工具MATLAB中的电力系统仿真工具箱对基于这种方法的有源电力滤波器进行仿真,仿真结果表明有源电力滤波器装置能够有效检测出高次谐波分量和电流波动分量,并可以消除谐波分量和波动分量。

The electric arc furnace is three-phase unbalanced system, which produces harmonics and negative sequence currents. Based on the ordinary method to restrain harmonic, the active power filter with decomposing symmetry component and extracting fundamental component is designed. This method can inspect fundamental positive current, fundamental negative current and fluctuated current of arc furnace, and can realize fast inspection of harmonic and filter. At last, MATLAB are used to simulate the system. The result indicates that the method is effective.