System for relay protecting controlling of combined DSP tech. with quick Fu surname calculating

This invention relates to a relay protection control system combining the DSP technology and the quick Fourier algorithm advantaged: 1, utilizing the ability of high speed data computation and accurate data process ability of DSP to carry out double signal control to the action executing device of the relay protection to increase its reliability and quickness of the action, 2, the entire control system has fine adjusting performance to increase the stability of the net and reduce the probability of stopping production brought with error or refusing action of the relay protection, 3, applying the improved Fourier algorithm to simplify the computation of harmonic analysis, 4, simple hardware circuit and accurate real time control.