The Study Of Singlechip And DSP-based Synchronous Sampling Of AC Data

In this paper,we conduct the research of synchronous sampling equipment of AC data of power system based on SCM and DSP.In former times,people use GPS to realize synchronous sampling in different place.But the method have limited in the SA of policy of US.At present,we research and develop the Northern Dipper Navigation Satellite System independently,the synchronous sampling has been applied in high voltage transmission line.This thesis selects the Northern Dipper BD-01 receiver provide the synchronous sampling pulse for the equipment,select high-speed multichannel synchronous A/D converter AD574 and SCM to conduct voltage and current sampling, use CPLD chip EPM7128 offer comprehensive logic control,adopt DSP chip as data processing and computation,complete the design of software and hardware system.