Applications of FFT algorithm to energy management system of electric equipment for underground coal mine

The essay probes into the present problems of the measurement errors caused by harmonic interference in the electric monitoring equipment for underground coal mine. We applied three-phase watt-hour meter in view of FFT(Fast Fourier Transformation) algorithm based on Industrial Ethernet, which can effectively analyze the harmonic component of the voltage and the current from the field. This can accurately calculate the electrical parameters of electrical equipment, improving the quality of electricity and achieving optimal energy management of coal mine.