电力系统谐波分析及Parks-McClellan算法滤波处理

power harmonic is a kind of pollution for the public power grid, toward the electric power engineering requires to analyze harmonic degree at time and filter it. This report according to the time select radix -2FFT algorithm to analyze the signal and get the harmonic degree. First artificial simulation the power grid signal in practical engineering, the use the FFT to analyze it, finally the result verified the original signal contains 5,7,11 harmonics. Using the Parks-McClellan algorithm on the basis of Chebyshev best consistent approximation design wave filter. Filtering out harmonic signal and get the pure power grid signal. The results of MATLAB also clearly show that it get the frequency signal in the power grid, it proves the wave filter can use in the practical engineering.