Power Quality Monitoring And Analyzing System Based On LabVIEW

With the improving of our national economy, kinds of industry production demand high power quality. Getting the power quality parameter of power system in time is very important to industry production. At present, some power quality monitors can't meet the need of real-time and accuracy for they are old, and their technique are far behind the time. In this paper, a new design of comprehensive monitor of power quality is proposed, and the technique of Digital Signal Processing and Virtual Instrument are used in the monitor through which the overall status of power quality can be got in a single platform. The background of power quality problem is outlined and how to solve some common problem in measurements is discussed. The harmonic analyzing algorithm is improved, a new compensating-iterating algorithm is put forward to calculate flicker. The practical measuring results show that this system can be used to measure the power quality with a high accuracy.