Power Quality Monitoring System Based On Dsp And Embedded Systems Research And Design

Along with the development of economy,as the nonlinear and the impact of the voltage have been used widely in the daily life and the electric power system, power pollution becames more serious. The problem of power quality is more progressive, more and more attentions of power system department and consumers pay to the power quality, so there are great significant to measure and analyze the power quality.Firstly, the power quality are analyzed about the develop in china and abroad in this paper, consulting the design mode of modern power quality surveillance equipment. For the satisfaction of speediness, dependability and high precision, the scheme of power quality monitoring system which based on DSP&ARM are designed in this paper. On the basis of this, the data-processing and display board based on the hardware as the core of DSP and ARM are designed which fully exert the signal processing capability of DSP and system controlling ability of embedded ARM. The communications between DSP and ARM, the expansion of memory and the LCD interface circuit are studied in depth. At the same time, the application of power quality monitoring system are analyzed which based on the wavelet transform. The programmes which are used to achieve the data collection, wavelet filtering and data processing functions are compiled in the DSP.To demonstrate the power quality parameters and the basic waveform, the system research and design a good human-computer interface based on the Qt / Embedded in the ARM hardware platform in this paper.Finally, the system debug and presents the results of power quality analysis are carried out in this paper.