DSP based on the FFT Algorithm in Power System Harmonic Detection Application

Harmonic detection is the research and analysis of harmonic problems in the starting point and main basis.Based on the mathematical transformation methods and discusses their advantages and disadvantages,it puts forward a practical and mature harmonic analysis method,and the algorithm in the paper analyses the problems and proposed solutions.The algorithm uses the assembly language to achieve,and then use the C language binding of each module,and the current control the highest performance processor TMS320C5509 sampled signal FFT operation,can fast detect the grid in the three-phase voltage,current harmonics for harmonic analysis in real time.The simulation results verify the correctness of the algorithm and high speed.