摘要
针对因传统谐波检测仪数据存储容量小而引起的高速采集与实时处理之间配合难的问题,提出了以数字信号处理控制器(DSP)为核心,配有电子集成驱动器(Integrated Drive Electronics,IDE)接口硬盘的谐波数据记录分析系统。由于传统的奈奎斯特定理对电力系统谐波信号采样会产生极其庞大的数据量,运用压缩感知理论对海量谐波数据进行压缩处理,在信号满足稀疏性的前提下,只需要较少的数据就可以实现信号的重构;同时还移植了通用文件系统Fat Fs对采样数据进行管理,并利用实验室虚拟仪器工程工作台Lab VIEW,搭建了谐波分析软件系统,将数据记录和数据分析两层分离,简化了系统的结构。与传统的谐波检测记录方法相比,该基于压缩感知的配电网谐波记录分析方案在符合谐波检测要求的前提下能够实现较高的数据压缩比,在保持较高的检测精度与稳定性的同时显著减少了数据传输和存储的压力,具有较强的实际应用价值。
In order to solve the problem of coordinating high-speed data acquisition and real-time processing caused by small data storage capacity in traditional harmonic detector,a new harmonic record and analysis system was put forward in this paper,which bases on Digital Signal Processor（ DSP） and is equipped with an Integrated Development Environment（ IDE）interface hard disk.Moreover,in the system,Compressed Sensing（ CS） was used to compress massive harmonic data and the Genetic FAT File System（ FatFs） was transformed to manage sampling data.In addition,Laboratory Virtual instrument Engineering（ LabVIEW） was employed to build a harmonic analysis software system.The layers of data record and analysis were separated so as to simplify the structure of the system.Compared with the traditional harmonic recording method,the harmonic record and analysis system with compressed sensing can achieve high data compressing ratio.While maintaining the high accuracy and stability,the pressure of data transmission and storage can be reduced significantly.Finally,the feasibility and accuracy of the proposed scheme is verified by the tests.
出处
《计算机应用》
CSCD
北大核心
2016年第A01期310-314,共5页
journal of Computer Applications
基金
国家自然科学基金资助项目(51407128)
中央高校基本科研业务费专项资金资助项目(0800219170)
关键词
谐波检测
电子集成驱动器
压缩感知
LAB
VIEW
信号重构
harmonics detection
Integrated Drive Electronics（IDE）
compressed sensing
Lab VIEW
signal reconstruction
