同步数据采集技术在电力系统中的应用

Application of the Simultaneous Sampling Technique for Data Acquisition in Power System

提出采用硬件锁相环电路和同步采样A/D芯片的硬件解决方法,解决电力系统中多路电压、电流值的交流采样问题,以保证电网频率变化时使用FFT计算电网谐波和相位的精度。

A method of hardware solution using phase-locked loop (PLL) and simultaneous sampling A/D chip is presented, to resolve the AC sampling for multiple voltage and current signals in power system. Then the computation accuracy of harmonic and phase is guaranteed by using FFT algorithm when the distortion exists in the frequency of the power system.