The Research On A Power Quality Surveillance Equipment Based On A New Theory

Aiming at the demand of power department and the practical applications, a new surveillance device based on DSP(Digital Signal Processing)technology is developed. The author briefly analyzes some problems caused by using single chip microprocessor as front porch control,and proposes the hardware and software structure which uses industrial level micro-controller MC9S12DP256B as master CPU,TMS320F206 as slave CPU,and thus can perform measurement,control and communication. A high-speed and high-Precision distributed data acquisition and Processing system is designed based on DSP .The synchronous data sampling of the supervising system is realized by multi-channel collection retaining and A/D transformation circuit. Data between the master and slave boards can be transferred by dual-port RAM. According to the special characters of the electric power system,the algorithm implementation of digital signal processor is presented.The equipment can provide comprehensive and accurate recording data for qualitystudy of electric energy. Besides,it displays real time curve and frequency spectrum。 Zhao Heng(Power system and its automation)Directed by prof. Wang Zengping...