电能质量分析仪的研制  

Research and Development of the Quality Analyzer for Electric Power

作　　者：骆东松[1] 黄锦华[1] 陈若珠[1] 刘承倩[1] 

机构地区：[1]兰州理工大学电气工程与信息工程学院,甘肃兰州730050

出　　处：《自动化仪表》2010年第11期61-63,共3页Process Automation Instrumentation

基　　金：甘肃省科技支撑计划资助项目(编号:0804GKCA046)

摘　　要：针对电力部门对电能质量进行监测的需求,设计了一种以高精度浮点运算DSP为核心的电能质量分析仪,分别介绍了其软硬件的实现方案。硬件主要应用了高性能低功耗的浮点数字信号处理器TMS320VC33和高精度A/D转换器MAX125;软件采用加窗插值快速傅里叶变换算法(FFT)进行数据分析,计算电网电压和电流中的各次谐波幅值、相位、功率及功率因数等参数,并将结果显示在液晶屏上。整个系统硬件体积小、功耗低,能快速、高精度、高可靠性地测量谐波。In accordance with the demands of electric power department to monitor the power energy quality,the high precise power energy quality analyzer with float point operation DSP as kernel has been designed,the implementing schemes of both hardware and software are introduced respectively.The hardware is composed of high performance and low power consumption float point digital signal processor TMS320VC33 and high precise A/D converter MAX125;the software is adopting window added interpolation FFT for data analysis and calculating harmonics amplitude,phase,power and power factor in grid voltage and current and display them on LCD panel.The system features compact,low power consumption,and reliably measures harmonics with fast speed and high accuracy.

关 键 词：电能质量 MAX125 RS-232通信 FIR数字滤波 快速傅里叶变换 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]