Design And Implementation Of Power Quality Data Acquisition System Based On DSP

With the development of science and technology, people’s demand is increasing, the traditional non renewable energy such as coal,oil,natural gas will be exhausted.In order to break the energy crisis and environmental crisis,promote energy-saving emission reduction,the development of low-carbon electricity,wind energy, solar energy and other new energy for distributed generation such as bamboo shoots after a spring rain,A new force suddenly rises.Distributed power generation system. Is a small module located in the vicinity of the user’s power energy integration formation, it is close to the user and can be interconnected with the distribution network, can save the transmission investment,improve the reliability of power supply, slow down the pressure of power supply and reduce environmental pollution and other advantages.There is a higher cost of distributed generation,inflexible control and other shortcomings,not integration of wind energy effectively. Solar distributed power supply.Under this background, the people in the process of the development of smart grid,began to focus on the new generation technologies,micro grid concept is in this Under the premise of the proposed, for decades,new energy has been committed to the development of sustainable development including solar energy,wind energy,tidal energy, micro grid power generation system is established based on the clean and renewable energy. As we know,the previously mentioned clean energy are transformed into electrical energy to use for thousands of households the field of power system,plays a crucial role here,and the power quality problem often is the core problem of power system is a prerequisite to ensure the normal use of electricity users.Today, the power electronic devices of all kinds of nonlinear devices used in power system,power quality problems caused by more and more complex,analysis more difficult. In this paper,110KW photovoltaic micro network platform based on the school, designed a TI TMS320F2812 power quality monitoring system based on the provided for power quality data analysis Security.This paper introduces the electric energy quality parameter calculation method,such as voltage offset, three-phase voltage allows unbalance,harmonic wave in the power grid and power frequency deviatioaThis paper also on TMS320F2812 and the development process of soft ware development do simple introduction.The host computer of the system development is based on the C# language WinForm window development through the communication protocol,free RS232 interface,respectively with different frame head to represent the corresponding voltage, current,frequency, and power quality parameters of the waveform display, solve the most current PC did not achieve waveform display.Acquisition system,this paper uses the AD7865 acquisition chip,which has fast, low power,4 channel simultaneous sampling 14 bit advantages. While suing DSP chip and network chip W5100 to realize Ethernet communication, meet the requirements of power quality monitoring in this. In this paper, the DSP algorithm in harmonic analysis is verified by practice.Finally, the paper summarizes the work, and puts forward the further research problems.