Research on Fourier and Prony analysis algorithm of inter-harmonic in power system

A power system inter-harmonic analysis method is introduced which mainly uses the classical Fourier algorithm and Prony algorithm. Through MATLAB simulation, the generation of simple harmonic wave and the superposition of signals in power system are simulated, and the parameters such as frequency, amplitude and phase in the power supply and system are calculated by means of Fourier algorithm accumulation. That is to say, Fourier transform is used to transform the time domain signal which is hard to calculated into the frequency domain signal and easy to be analysis. The complex convolution operation can be transformed into simple product operation, and the advantages of Prony algorithm are compared. The experiment is verified by MATLAB algorithm and engineering data analysis.