基于LabVIEW的农网谐波监测平台设计与开发

Design and Development of Harmonics Monitoring Platform of Rural Power Network Based on LabVIEW

针对农村电网谐波源的复杂特性,设计了基于LabVIEW技术的、开放式的农网谐波监测平台,该平台既可以通过高速数据采集卡获取实际电网或标准谐波源中的谐波信号,也可以加载基于LabView或Matlab仿真生成的任意组合的虚拟谐波信号。集成了FFT等多种信号处理方法,用于谐波信号的检测与分析。仿真算例表明,运用基于汉宁窗的FFT方法检测农网常见谐波,可以获得较理想的结果。

In consideration of the complex characteristic of harmonics sourees of rural power network one open harmonics monitoring platform was developed based on the LabVIEW technology. The platform could not only obtain the harmonic signals from actual power network or standard harmonic sources by using high speed data acquisition card, but also simulate to generate any random combined virtual harmonic signals by loading the Simulink of LabView or Matlab. There were many process methods in the platform for detection and analysis of the signals such as integration of FTT. The simulated calculation example indicated that the based on Hanning Window＇s FTT method could detect harmonics of rural power network with the best results.