智能低压配电系统中电能质量监测器的设计

Design of Power Quality Monitor of Intelligent Low Voltage Distribution System

介绍了一种应用于智能低压配电系统电能质量监测器及其软硬件的设计方案。硬件系统采用以数字信号处理器(DSP)为核心的设计方案,软件系统采用实时多任务操作系统(RTOS)为运行平台的设计方案。研制的样机具有电压、电流、功率、频率等常规量监测及稳态谐波分析和电压上下凹捕捉等功能,同时还具备美观、实用的菜单式人机交互界面。进行了样机的测量精度实验和功能性验证实验。结果表明,该样机性能良好,达到了设计要求。

A method of hardware and software design of power quality monitor that used in low voltage distribution and a solution of using digital signal processor （DSP） as the core of hardware system and using real -time operation system （RTOS） as the platform of software were introduced. A prototype based on the fundamental monitoring functions was completed, it has the following functions： routine measure including voltage, current, power and so on, static harmonic analysis, voltage dip capture, etc. Besides, it has a beautiful and practical human-machine interaction based on menu operation. In the section of the experiment, measuring precision experiments and functional experiments have been done. The experiment results prove that the prototype has a good performance and reaches the expecting design requirements successfully.