【摘要】 介绍了一种先进的谐波监测和数据传输系统,系统能同时监测系统三相电压和电流的谐波水平,并通过公用的电话网,实现谐波数据的远距离传输,系统下位单位机存储容量大,达1 5M,采用同步锁相环控制,避免了频谱泄漏的产生,使用FAFT算法分析采样数据,不仅速度快精度高,而且抗混叠。上位机采用VB和Access数据库共同完成对数据的通信、分析处理,功能全,人机界面友好。更多还原

【Abstract】 Introduces an advanced system of harmonic monitor and data remote transimission which can monitor three-phase voltage and current simultan and can realize data remote transimission through public telephone network.Its hypogyny SCM possesses mass memory amounting to 1.5 M.It adopts in-phase luck-phase-loop and avoid spectrum leakage.It can reach high precision and can anti-alias by taking FAFT algorithm to analysis sampling.By using VB and Access databank,the epigyny computer fulfills data communication and disposes data and possesses versatility and friendly man-machine interface.更多还原