Design and Research of Intelligent Sensing Technology of Distribution Network Equipment Based on FFT Algorithm

This paper is based on the analysis of the frequency of grid load fluctuations using the FFT algorithm by a LPC1768 microcontroller. Through the combination of hardware platform and software programming, the FFT conversion of the input signal and the real-time display of the spectrum are realized. The article expounds the principle of FFT algorithm, introduces the characteristics of the LPC1768 hardware platform, introduces the design process in detail, including the construction of the compilation environment, the program download module, and shows the test results of power grid load fluctuation with sine wave, square wave and triangle wave as examples, the highest accuracy of the traditional algorithm is 91.6%, and the highest accuracy of the FFT algorithm can reach more than 96%. This index verifies the effectiveness of the algorithm and provides a feasible technical scheme for the study of the load fluctuation frequency of power grid.