DSP与LabWindows/CVI的电力故障监测录波器设计

Power System Fault Monitor and Recorder Based on DSP and LabWindows/CVI

针对现有电网实时监测录波系统的缺陷,设计出一种结合DSP与LabWindows/CVI软件的故障录波器。分析了FFT精确快速分析谐波的能力及其在DSP上的实现方法。介绍了硬件结构原理,给出硬件设计框图和LabWindows/CVI控制的软件流程,并研制出故障录波器。所测结果可通过LabWindows/CVI软件在电脑上实时显示。实验结果验证了DSP运用FFT分析算法的快速性和准确性,系统运行稳定可靠,有较好的应用前景。

For the defects of power system fault monitor and recorder,a real-time power system fault monitor and recorder is designed.The system combines high-speed computing power of DSP with LabWindows/CVI software control.Precise and rapid analysis of harmonics of FFT and its usage in DSP are analyzed.The principle of the hardware structure,hardware design block diagram and LabWindows/CVI software control flow chart are introduced.Experimental results can be displayed on computer monitor through LabWindows/CVI software,and proves the combination of DSP and FFT analysis successful.This system is stable,showing a great prospect.