基于DSP的电力录波监测研究与设计

Research and Design of Electric Power Fault Recorder Based on DSP

在分析电力信号特点的基础上 ,应用傅氏滤波算法对电力信号的基波向量、有效值、有功功率和无功功率的参数进行了详尽的分析与计算 ,根据实际要求对全波傅氏算法进行了改进以满足实时性要求 ,并将数字信号处理专用芯片 (TMS32 0C32 )应用于该装置 ,设计了数字信号处理部分的系统软硬件。结果表明 ,该装置的稳态性能好 ,各项误差指标均符合国家标准 ,并已成功运行于高压变电站现场。

Based on analysing the features of electric power signal, a design on digital signal processing is introduced. Fourier-filtering method is proposed to analyze and calculate parameters, such as those of fundamental wave, RMS, available power, unavailable power, in details. Full-wave Fourier method has been modified to satisfying the real-time requirement and the special chip of digital signal processor is used into this recorder, this paper also gives out the design of software and hardware system of digital signal processing. From the result, it can be concluded that recorder has stable performance and every error target meets national standard. This type of recorder has been successfully used in several high voltage transformer substation.