Design and implementation of data acquisition system for power quality monitoring
JI Zhen-shan · Power System Protection and Control · 2009
An excellent performance of power quality data acquisition system based on high precision AD chip AD7656 and fixed point DSP chip TMS320F2812 was designed and implemented.Working principle of AD7656 and the parallel connection between AD and DSP were introduced detailedly,while high voltage and current input signal have been transformed and filtered in the front of the circuit system.With timer interrupt of DSP triggering AD sampling and data reading completed in external interrupt,the method of modularization is used for software design of this system.Feasibility and reliability of the system ware validated by experimental test,and the results showed that the data acquisition system can satisfy the demand of power quality analysis system.