基于ARM和FPGA的新型电能质量分析仪研究设计

Research Design of a New Power Quality Analyzer Based on ARM and FPGA

电能质量分析仪是应用于电网电能质量监测和分析的重要工具,对提升电网供电质量有着重要意义。采用ARM/FPGA作为主协处理器,通过硬件锁相环对频率进行同步跟踪,并且对电网信号同步采样,结合FFT变换以及基于FIR滤波器的Hilbert变换等,实现基本电力参数测量、谐波分析等功能。同时开发了基于ARM和WINCE6.0操作系统的人机界面软件,试验系统具备友好的人机交互、实时测量和显示功能。实验表明研制的分析仪功能全面、性能可靠、测量精准。

As an important tool for grid power quality monitoring and analysis,the power quality analyzer is of great significance for the improvement of the quality of grid power supply. ARM / FPGA as main co-processor,synchronous frequency tracking through hardware PLL,synchronous sampling of grid signal,as well as FFT and Hilbert transformation based on FIR filter,are used to realize basic power parameter measurement. harmonic analysis and other functions. In the meantime,an HMI software is developed on the basis of ARM and WINCE6. 0 operating system. The testing system has friendly man-machine interaction,real-time measurement and display functions. Experimental results indicate that the analyzer is a full-featured one with reliable performance and accurate measurement.