| With the development of power electronic technology and wide-spread application of large-power electronic equipments,all kinds of voltage quality problems caused by those have attracted high attentions from researchers devoted in power field,and new technology which can improve voltage quality has recently become new hot spot in the research of power system.It can provide essential evidence for improving voltage quality,making out control measures and making sure technical parameters of control equipments by real-time monitoring,recording and statistical analysis for voltage quality.Using TMS320F2806 DSP as its core processor,a new voltage monitor is introduced,which monitors as well as records the parameters of voltage quality such as voltage,harmonic and so on.The main work of this paper as follows:On the basis of the research status of voltage metering,it designs the application structure,function requirements,technical indicators and core algorithm of this system in detail.On design of hardware,the inner structures of the system are designed detailedly on the aspect of minimum system of DSP,data sampling,power supply,keyboard and LCD display,communication interface.On design of software,the paper achieves accurate measurement of frequency based on an adaptive integral period sampling algorithm and arithmetic average filter, and adopts Q format calibration to improve fixed-Point DSP's calculation speed and accuracy.The stimulant operation system and multi-state,multi-task ideas are adopted in software programming,to achieve multi-task scheduling program gradation and modularization design.Finally,A series of the anti-interference measures adopted in the paper are presented from software and hardware two aspects.The experiment results show that the voltage monitor works effectively and stably,and it can achieve high accuracy of real-time voltage metering and analyzing, Promise a measuring accuracy of 0.1V.Therefore,the design objective is obtained as expected.
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